Patents by William P Parker

Abstract: A cuvette for use with a spectophotometer having a capillary sample chamber having a volume of from 1 microliter to 1 femtoliter.
Type: Application
Filed: October 5, 2012
Issued: April 10, 2014
Inventor:  William P Parker
Patent number: 7099057
Abstract: A method of fabricating a holographic mask includes the steps of providing an illumination source and a non-opaque object mask. The source is for generating a coherent illumination beam directed along an axis. The object mask is capable of transmitting a portion of the illumination beam as undiffracted reference wavefronts. The object mask has one or more substantially transparent elements for creating overlapping object wavefronts when the illumination beam is incident thereon. The object mask is disposed in the illumination beam. A holographic recording medium is provided in the illumination beam in line optically with the object mask. The object mask is illuminated with the illumination beam, thereby causing the object mask to allow undiffracted reference wavefronts to pass therethrough. The illumination directed along the axis causes the one or more substantially transparent elements to create object wavefronts which interact with the undiffracted reference wavefronts to create an interference pattern.
Type:                                             Grant
Filed:                     September 8, 2003
Issued:                         August 29, 2006
Assignee:                                                 Marsupial Holdings, Inc.
Inventors:                                                                         William P. Parker, Julie W. Parker
Application number: 20040047014
Abstract: An optically made, high-efficiency in-line holographic mask (ILHM) for in-line holographic patterning of a workpiece, and apparatus and methods for performing same. The ILHM of the present invention combines the imaging function of a lens with the transmission properties of a standard amplitude mask, obviating the need for expensive projection optics.
Type:                                             Application
Filed:                     September 8, 2003
Issued:                         March 11, 2004
Inventors:                                                                         William P. Parker, Julie W. Parker
Patent number: 6618174
Abstract: An optically made, high-efficiency in-line holographic mask (ILHM) for in-line holographic patterning of a workpiece, and apparatus and methods for performing same. The ILHM combines the imaging function of a lens with the transmission properties of a standard amplitude mask, obviating the need for expensive projection optics. The ILHM is either a type I (non-opaque) or type II (opaque) specialized object mask having one or more substantially transparent elements which can be phase-altering, scattering, refracting and/or diffracting. A method of creating a pattern on a workpiece includes the steps of disposing an ILHM, disposing a workpiece adjacent the ILHM and illuminating the ILHM to impart a pattern to the workpiece. In another method, the ILHM is used in combination with a lens. The ILHM is disposed such that a holographic real image is formed at or near the lens object plane, and the workpiece is disposed at or near the lens image plane.
Type:                                             Grant
Filed:                     November 14, 1997
Issued:                         September 9, 2003
Assignee:                                                 Diffraction, LTD
Inventors:                                                                         William P. Parker, Julie W. Parker
Application number: 20020039209
Abstract: An optically made, high-efficiency in-line holographic mask (ILHM) for in-line holographic patterning of a workpiece, and apparatus and methods for performing same. The ILHM of the present invention combines the imaging function of a lens with the transmission properties of a standard amplitude mask, obviating the need for expensive projection optics.
Type:                                             Application
Filed:                     November 14, 1997
Issued:                         April 4, 2002
Inventors:                                                                         WILLIAM P. PARKER, JULIE W. PARKER
Patent number: 6077629
Abstract: The present invention is directed to a holographic media that is composed of a mixture of a photosensitive substance such as a photopolymer and a porous rigid material such as an aerogel that provides a substructure to the composite material. This unique composition of matter can be utilized in a multitude of applications where a thick optically patterned wavefront modulating media is required, including as a holographic storage device. The composite material avoids the difficulties regarding shrinkage found in plain photopolymers. The rigid highly porous component is specially treated to receive the photosensitive material. This unshrinkable substructure has a plurality of very small, rigid pores that is essentially transparent at optical wavelengths and provides the matrix for the photopolymers. It provides holographic recording in both thin and thick formats without shrinkage and pattern distortion. The method of producing the composite holographic media is also disclosed.
Type:                                             Grant
Filed:                     February 20, 1998
Issued:                         June 20, 2000
Assignee:                                                 Diffraction, LTD
Inventors:                                                                         William P. Parker, Scott W. Tighe
Patent number: 6011650
Abstract: A decorative optical display (20) utilizing a reflective diffraction grating (94) or a transmissive diffraction grating (304) and a plurality of polychromatic light sources (60) disposed around perimeter (106) of the reflective diffraction grating or perimeter (314) of the transmissive diffraction grating. The light sources are disposed so as to the illuminate the reflective or transmissive diffraction grating at an oblique angle (204) or (328), respectively. The oblique illumination of the reflective or transmissive diffraction grating prevents a viewer (200) from seeing undiffracted light rays (212) or (336) emanating from the light sources, which can detract from the appeal of the optical display pattern (250). The reflective or transmissive diffraction grating may be flat or curved and may be supported by a support member (90). Further, the reflective or transmissive diffraction grating may have either a single or multiple axes.
Type:                                             Grant
Filed:                     February 26, 1998
Issued:                         January 4, 2000
Assignee:                                                 Rainbow Design LLC
Inventors:                                                                         William P. Parker, Peter H. Stephens
Patent number: 5958268
Abstract: An apparatus and method for selectively removing undesired material from the surface of a substrate provides a flow of inert gas over the undesired material substrate surface while irradiating the undesired material with energetic photons. The invention enables removal of undesired material without altering the physical properties of the material underlying or adjacent the removed, undesired material. Removal effectiveness may be enhanced by utilizing polarized energetic photons. Directing a laser beam to the back side of a transparent substrate may enhance the effectiveness of removal.
Type:                                             Grant
Filed:                     March 1, 1996
Issued:                         September 28, 1999
Assignee:                                                 Cauldron Limited Partnership
Inventors:                                                                         Audrey C. Engelsberg, William P. Parker
Patent number: 5800625
Abstract: An apparatus and method for removing undesired material from the surface of a substrate provides a flow of inert gas over the undesired material substrate surface while irradiating the undesired material with energetic photons directed at an angle that is oblique to the substrate. The invention enables removal of undesired material without altering the physical properties of the material underlying or adjacent the removed, undesired material. In certain circumstances, the non-perpendicular incidence permits effective removal where normal incidence caused damage to the substrate or poor removal or both.
Type:                                             Grant
Filed:                     July 26, 1996
Issued:                         September 1, 1998
Assignee:                                                 Cauldron Limited Partnership
Inventors:                                                                         Audrey C. Engelsberg, Andrew W. Johnson, William P. Parker
Patent number: 5677805
Abstract: An apparatus for determining the position and/or orientation of a transducing head positioned on one side of and close to a rotating transparent-core magnetic storage disk. Light is introduced into the disk to establish total internal reflection therein. A detector disposed on the other side of the disk opposite the head detects the intensity of light on the interior region of the disk. The detected intensity is representative of the separation of the head from the disk.
Type:                                             Grant
Filed:                     June 7, 1995
Issued:                         October 14, 1997
Assignee:                                                 Guzik Technical Enterprises
Inventors:                                                                         William P. Parker, Nahum Guzik, Edward Fredkin
Patent number: 5528402
Abstract: An electrically addressable wavefront-modulation device has a thin film of transparent conductive material finely patterned as a hologram in which individual fringe elements need not have electrical continuity with each other or with external electrodes. The holographic pattern is covered with a transparent dielectric whose refractive index preferably matches that of the patterned material. An electro-optic layer varies in refractive index depending on application of a voltage to transparent conductive electrodes, one on each side of the device area to be addressed. The hologram’s diffraction efficiency may be varied at high frequency. Thus the electrohologram is addressed by area or field rather than by element or matrix addressing. The electro-optic layer may be liquid crystal material. Preferred embodiments have T-shaped structures formed by subetching under each fringe element.
Type:                                             Grant
Filed:                     February 7, 1994
Issued:                         June 18, 1996
Inventor:                                                                         William P. Parker
Patent number: 5198723
Abstract: A gas discharge display apparatus in the form of an electroluminescent gas filled panel adapted for quickly and inexpensively making a durable and robust luminous sign using image patterns transferred to the panel by painting, silkscreening, stencilling, lithography, or the like. The apparatus generally includes a pair of substantially parallel spaced apart rigid plates, or sheets, enclosing an electroluminescent gas, and having variously located and kinds of conductive elements, such as surface coatings, used as electrodes for energizing the enclosed electroluminescent gas.
Type:                                             Grant
Filed:                     December 11, 1989
Issued:                         March 30, 1993
Inventor:                                                                         William P. Parker
Patent number: 5126632
Abstract: A gas discharge display apparatus in the form of an electroluminescent gas filled panel adapted for quickly and inexpensively making a durable and robust luminous sign using image patterns transferred to the panel by painting, silkscreening, stencilling, lithography, or the like. The apparatus generally includes a pair of substantially parallel spaced apart rigid plates, or sheets, enclosing an electroluminescent gas, and having variously located and kinds of conductive elements, such as surface coatings, used as electrodes for energizing the enclosed electroluminescent gas.
Type:                                             Grant
Filed:                     March 15, 1991
Issued:                         June 30, 1992
Inventor:                                                                         William P. Parker
Patent number: 4963792
Abstract: A gas discharge apparatus includes a discharge chamber including a transparent dome portion and an electrode-including base portion, which together enclose an ionizable gas. A cup-shaped base member is affixed at its periphery to the edge of the base portion of the discharge chamber. A power supply and discharge excitation network is disposed within the interior of the base portion. The power supply and discharge network include a pair of terminals. An oscillator and associated step-up output transformer powered from the terminals is positioned between the terminals and the discharge chamber. A field shield including a conductive sheet member is positioned between the terminals and the discharge chamber. The field shield is adapted to be electrically coupled to the electrode so that discharge-supporting electric fields may be established in the discharge chamber between the electrode and through the dome portion of that chamber to an effective ground electrode exterior to the chamber.
Type:                                             Grant
Filed:                     June 27, 1988
Issued:                         October 16, 1990
Inventor:                                                                         William P. Parker
Patent number: 4956577
Abstract: A gas discharge display apparatus in the form of a panel housing a plurality of electroluminescent gas-filled discharge chambers adapted for interactively controlled illumination. The apparatus generally includes an electrically conductive surface underlying the discharge chambers utilized as an electrode for energizing the electroluminescent gas in the chambers. A plasma glow discharge is interactively obtained in the chambers by placing a ground coupled conductive member, such as a human hand, proximal to the chambers opposite the conductive surface.
Type:                                             Grant
Filed:                     August 24, 1988
Issued:                         September 11, 1990
Inventor:                                                                         William P. Parker
Patent number: 4887003
Abstract: A gas discharge display apparatus in the form of an electroluminescent gas filled panel adapted for quickly and inexpensively making a durable and robust luminous sign using image patterns transferred to the panel by painting, silkscreening, stencilling, lithography, or the like. The apparatus generally includes a pair of substantially parallel spaced apart rigid plates, or sheets, enclosing an electroluminescent gas, and having variously located and kinds of conductive surface coatings used as electrodes for energizing the enclosed electroluminescent gas.
Type:                                             Grant
Filed:                     May 10, 1988
Issued:                         December 12, 1989
Inventor:                                                                         William P. Parker
Patent number: 4754199
Abstract: A gas discharge apparatus includes a discharge chamber including a transparent dome portion and an electrode-including base portion, which together enclose an ionizable gas. A cup-shaped base member is affixed at its periphery to the edge of the base portion of the discharge chamber. A power supply and discharge excitation network is disposed within the interior of the base portion. The power supply and discharge network include a pair of terminals. An oscillator and associated step-up output transformer powered from the terminals is positioned between the terminals and the discharge chamber. A field shield including a conductive sheet member is positioned between the terminals and the discharge chamber. The field shield is adapted to be electrically coupled to the electrode so that discharge-supporting electric fields may be established in the discharge chamber between the electrode and through the dome portion of that chamber to an effective ground electrode exterior to the chamber.
Type:                                             Grant
Filed:                     March 4, 1987
Issued:                         June 28, 1988
Inventor:                                                                         William P. Parker
Patent number: D322489
Type:                                             Grant
Filed:                     May 19, 1989
Issued:                         December 17, 1991
Inventor:                                                                         William P. Parker
 

Leave a Reply