Patents by Inventor Richard T. Ingwall
Richard T. Ingwall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7787110Abstract: An apparatus and a method for acquiring an image of skin topology. The apparatus comprises at least one light source, configured to form a source beam; at least one illuminating diffractive optical element (DOE) disposed in the optical path of the source beam, configured to diffract the source beam, thereby forming an illuminating beam; a skin contact surface, disposed in the optical path of the illuminating beam, configured to at least partially reflect the illuminating beam at regions of the boundary between the skin contact surface and skin that are not in contact with the skin contact surface, thereby forming a reflected beam; at least one imaging diffractive optical element (DOE), disposed in the optical path of the reflected beam, configured to diffract the reflected light beam, thereby forming an image beam; and a sensor array, configured to receive at least a portion of the image beam and thereby to detect the acquired image.Type: GrantFiled: October 14, 2005Date of Patent: August 31, 2010Assignee: Aprilis, Inc.Inventors: Daniel H. Raguin, David A. Waldman, Phillip H. Malyak, John S. Berg, Richard T. Ingwall
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Patent number: 7728959Abstract: An apparatus for image acquisition of topological features of the surface of skin. The apparatus comprises a waveguide, having an entrance edge and top and bottom surfaces; a light source, configured to direct a light beam at the entrance edge of the waveguide; a skin contact layer, disposed at or near the top surface of the waveguides; a holographic optical element (HOE), disposed at the top or at the bottom surfaces of the waveguide, configured to diffract the light beam incident from the light source to the skin contact layer; a sensor array, configured to detect light reflected from the surface of skin in contact with skin contact layer; and means for compensating for changes in the Bragg matching condition of the HOE due to temperature.Type: GrantFiled: June 21, 2004Date of Patent: June 1, 2010Assignee: Aprilis, Inc.Inventors: David A. Waldman, Vincent Fedele, Richard T. Ingwall, Daniel H. Raguin, John S. Berg, Joby Joseph, David L. Kent
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Publication number: 20090325079Abstract: Disclosed is a photopolymerizable holographic recording medium for data storage that comprises colloidal metal, and which exhibits a threshold for a second stage polymerization which is substantially insensitive to the light used for both forming holograms and interrogating the medium during servo and/or read events. Also disclosed is a method of preparing said photopolymerizable holographic recording medium. Also disclosed is a method for preparing a colloidal without additives in a viscous medium.Type: ApplicationFiled: June 22, 2009Publication date: December 31, 2009Inventors: Erdem A. Cetin, Richard T. Ingwall, Richard A. Minns, David A. Waldman, Larry C. Takiff
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Patent number: 7480084Abstract: A holographic optical filter that includes an optical recording medium for storing several multiplexed reflection holograms that are formed by successive interference between two or more collimated object beams with a common collimated reference beam. The object beams are incident to the recording material at a series of angles chosen to provide reflection efficiency over the desired filed of view at the specified wavelength.Type: GrantFiled: December 5, 2005Date of Patent: January 20, 2009Assignee: STX Aprilis, Inc.Inventors: Richard T. Ingwall, David A. Waldman
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Patent number: 7463799Abstract: A Bragg grating that has an average index of refraction that changes with temperature to compensate for variations in grating spacing caused by temperature changes.Type: GrantFiled: June 10, 2002Date of Patent: December 9, 2008Assignee: STX, Aprilis, Inc.Inventor: Richard T. Ingwall
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Publication number: 20080123908Abstract: An apparatus for image acquisition of topological features of the surface of skin. The apparatus comprises a waveguide, having an entrance edge and top and bottom surfaces; a light source, configured to direct a light beam at the entrance edge of the waveguide; a skin contact layer, disposed at or near the top surface of the waveguides; a holographic optical element (HOE), disposed at the top or at the bottom surfaces of the waveguide, configured to diffract the light beam incident from the light source to the skin contact layer; a sensor array, configured to detect light reflected from the surface of skin in contact with skin contact layer; and means for compensating for changes in the Bragg matching condition of the HOE due to temperature.Type: ApplicationFiled: June 21, 2004Publication date: May 29, 2008Inventors: David A. Waldman, Vincent Fedele, Richard T. Ingwall, Daniel H. Raguin, John S. Berg, Joby Joseph, David L. Kent
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Patent number: 7297448Abstract: Disclosed is a photopolymerizable holographic recording medium for data storage that comprises colloidal metal, and which exhibits a threshold for a second stage polymerization which is substantially insensitive to the light used for both forming holograms and interrogating the medium during servo and/or read events. Also disclosed is a method of preparing said photopolymerizable holographic recording medium. Also disclosed is a method for preparing a colloidal without additives in a viscous medium.Type: GrantFiled: November 20, 2002Date of Patent: November 20, 2007Assignee: Aprilis, Inc.Inventors: Erdem A. Cetin, Richard T. Ingwall, Richard A. Minns, David A. Waldman, Larry C. Takiff
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Patent number: 6992805Abstract: A holographic optical filter that includes an optical recording medium for storing several multiplexed reflection holograms that are formed by successive interference between two or more collimated object beams with a common collimated reference beam. The object beams are incident to the recording material at a series of angles chosen to provide reflection efficiency over the desired filed of view at the specified wavelength.Type: GrantFiled: June 11, 2002Date of Patent: January 31, 2006Assignee: Aprilis, Inc.Inventors: Richard T. Ingwall, David A. Waldman
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Patent number: 6904491Abstract: A hybrid data storage system comprising at least one memory system and at least one holographic drive, data being transmitted between the holographic drive and the memory system. At least one holographic drive writes data to a first holographic recording medium, and reads the written data from said first recording medium and from at least one other holographic recording medium.Type: GrantFiled: April 4, 2002Date of Patent: June 7, 2005Assignee: Aprilis, Inc.Inventors: David A. Waldman, Richard T. Ingwall, M. Glenn Horner
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Patent number: 6881464Abstract: An apparatus and method that produces recording media using at least two platens. A first platen is movable relative to a second platen, and each platen has respective first and second support surfaces onto which substrates are placed, the first and second substrates each having inner and outer longitudinal surfaces. A centering device aligns the respective substrates relative to a one or more reference positions, a positioning system provides a degree of parallelism between the outer longitudinal surfaces of each of the substrates and produces a desired gap between the inner longitudinal surfaces of the substrates, and a dispensing unit which emits a liquid medium within the gap between inner longitudinal surfaces of the substrates.Type: GrantFiled: May 14, 2002Date of Patent: April 19, 2005Assignee: Aprilis, Inc.Inventors: David A. Waldman, Rod Hopwood, Richard T. Ingwall, YajPaul Panchu
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Publication number: 20030157414Abstract: A holographic recording medium showing little or no shrinkage after exposure comprises an acid generator capable of producing an acid upon exposure to actinic radiation; a binder; a difunctional epoxide monomer or oligomer; and a polyfunctional (i.e., tri- or higher functional) epoxide monomer or oligomer, the difunctional and polyfunctional epoxide monomers or oligomers being capable of undergoing cationic polymerization initiated by the acid produced from the acid generator. The medium is especially useful for holographic data storage applications.Type: ApplicationFiled: November 13, 1997Publication date: August 21, 2003Inventors: PRADEEP K. DHAL, RICHARD T. INGWALL, ERIC S. KOLB, HSIN YU LI, DAVID A. WALDMAN
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Publication number: 20030152842Abstract: Disclosed is a photopolymerizable holographic recording medium for data storage that comprises colloidal metal, and which exhibits a threshold for a second stage polymerization which is substantially insensitive to the light used for both forming holograms and interrogating the medium during servo and/or read events. Also disclosed is a method of preparing said photopolymerizable holographic recording medium. Also disclosed is a method for preparing a colloidal without additives in a viscous medium.Type: ApplicationFiled: November 20, 2002Publication date: August 14, 2003Applicant: Aprilis, Inc.Inventors: Erdem A. Cetin, Richard T. Ingwall, Richard A. Minns, David A. Waldman, Larry C. Takiff
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Publication number: 20030007250Abstract: A Bragg grating that has an average index of refraction that changes with temperature to compensate for variations in grating spacing caused by temperature changes.Type: ApplicationFiled: June 10, 2002Publication date: January 9, 2003Inventor: Richard T. Ingwall
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Publication number: 20020196486Abstract: A holographic optical filter that includes an optical recording medium for storing several multiplexed reflection holograms that are formed by successive interference between two or more collimated object beams with a common collimated reference beam. The object beams are incident to the recording material at a series of angles chosen to provide reflection efficiency over the desired filed of view at the specified wavelength.Type: ApplicationFiled: June 11, 2002Publication date: December 26, 2002Applicant: Aprilis, Inc.Inventors: Richard T. Ingwall, David A. Waldman
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Publication number: 20020198955Abstract: A hybrid data storage system that includes a controller that communicates with an outside source of information, and at least one holographic drive engine that communicates with controller. The information is transmitted between the controller and the outside source of information and between the holographic drive engine and the controller.Type: ApplicationFiled: April 4, 2002Publication date: December 26, 2002Applicant: Aprilis, Inc.Inventors: David A. Waldman, Richard T. Ingwall, M. Glenn Horner
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Publication number: 20020197440Abstract: An apparatus and method that produces recording media using at least two platens. A first platen is movable relative to a second platen, and each platen has respective first and second support surfaces onto which substrates are placed, the first and second substrates each having inner and outer longitudinal surfaces. A centering device aligns the respective substrates relative to a one or more reference positions, a positioning system provides a degree of parallelism between the outer longitudinal surfaces of each of the substrates and produces a desired gap between the inner longitudinal surfaces of the substrates, and a dispensing unit which emits a liquid medium within the gap between inner longitudinal surfaces of the substrates.Type: ApplicationFiled: May 14, 2002Publication date: December 26, 2002Applicant: Aprilis, Inc.Inventors: David A. Waldman, Rod Hopwood, Richard T. Ingwall, YajPaul Panchu
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Patent number: 5759721Abstract: A holographic recording medium comprises an acid generator capable of producing an acid upon exposure to actinic radiation; a binder; and at least one monomer or oligomer capable of undergoing cationic polymerization initiated by the acid produced from the acid generator. This recording medium is not subject to the disadvantages (for example, oxygen sensitivity) associated with radical-polymerized prior art holographic recording media.Type: GrantFiled: November 1, 1996Date of Patent: June 2, 1998Assignee: Polaroid CorporationInventors: Pradeep K. Dhal, Michael G. Horner, Richard T. Ingwall, Eric S. Kolb, Parag G. Mehta, Richard A. Minns, Howard G. Schild, David A. Waldman
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Patent number: 5571626Abstract: Electroluminescent devices have, as the active layer, a polymer having a chain comprising a plurality of electroluminescent groupings, adjacent pairs of the electroluminescent groupings being connected via two benzene rings linked to each other only by a single covalent bond, at least one of the benzene rings bearing, at a position ortho to the covalent bond, a substituent of sufficient size that the length of the bond connecting the two benzene rings is not less than 1.495 Angstroms. Preferred electroluminescent groupings comprise a chain of three or more para-phenylene groups connected to one another by amide, carboxy, ester, urea, urethane or vinyl groups. The polymers have a fixed conjugation length with predictable electroluminescent properties.Type: GrantFiled: December 15, 1994Date of Patent: November 5, 1996Assignee: Polaroid CorporationInventors: William J. Cumming, Russell A. Gaudiana, Richard T. Ingwall, Eric S. Kolb, Cheryl P. Petersen
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Patent number: 5414069Abstract: An electroluminescent polymer comprises a main chain and a plurality of side chains, each of the side chains comprising an electroluminescent group and a flexible spacer connecting the electroluminescent group to the main chain, the spacers and the main chain being such that the electroluminescent groups are not conjugated with one another. The nature of the main chain and the spacer groups can be varied to enhance solubility, film-forming ability and other characteristics of the polymer, without significantly changing the electroluminescent properties of the polymer.Type: GrantFiled: February 1, 1993Date of Patent: May 9, 1995Assignee: Polaroid CorporationInventors: William J. Cumming, Russell A. Gaudiana, Richard T. Ingwall, Eric S. Kolb, Parag G. Mehta, Richard A. Minns
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Patent number: 5376456Abstract: Electroluminescent devices have, as the active layer, a polymer having a chain comprising a plurality of electroluminescent groupings, adjacent pairs of the electroluminescent groupings being connected via two benzene rings linked by only a single covalent bond, at least one of the benzene rings bearing, at a position ortho to the covalent bond, a substituent of sufficient size that the two benzene rings are essentially not conjugated with each other. Preferred electroluminescent groupings comprise a chain of three or more para-phenylene groups connected to one another by amide, carboxy, ester, urea, urethane or vinyl groups. The polymers have a fixed conjugation length with predictable electroluminescent properties.Type: GrantFiled: May 13, 1993Date of Patent: December 27, 1994Assignee: Polaroid CorporationInventors: William J. Cumming, Russell A. Gaudiana, Richard T. Ingwall, Eric S. Kolb, Cheryl P. Petersen