Inventor · disambiguated record
Richard T. Ingwall
Also filed as: INGWALL RICHARD T
16 granted patents·3 pending applications·895 citations·filing 1984–2009
95Inventor score
Top patents by PatentIndex Score
19 records- 0197US4970129AHologramsPOLAROID CORP·Filed 1988·Granted Nov 13, 1990·144 cites·15 claims
- 0296US5414069AElectroluminescent polymers, processes for their use, and electroluminescent devices containing these polymersPOLAROID CORP·Filed 1993·Granted May 9, 1995·116 cites·12 claims
- 0395US5759721AHolographic medium and process for use thereofPOLAROID CORP·Filed 1996·Granted Jun 2, 1998·167 cites·17 claims
- 0494US5198912AVolume phase hologram with liquid crystal in microvoids between fringesPOLAROID CORP·Filed 1991·Granted Mar 30, 1993·172 cites·20 claims
- 0592US4588664APhotopolymerizable compositions used in hologramsPOLAROID CORP·Filed 1984·Granted May 13, 1986·104 cites·37 claims
- 0691US6992805B2Holographic filter with a wide angular field of view and a narrow spectral bandwidthAPRILIS INC·Filed 2002·Granted Jan 31, 2006·47 cites·14 claims
- 0781US7787110B2Diffractive imaging system and method for the reading and analysis of skin topologyAPRILIS INC·Filed 2005·Granted Aug 31, 2010·25 cites·45 claims
- 0877US7728959B2Acquisition of high resolution biometric imagesAPRILIS INC·Filed 2004·Granted Jun 1, 2010·39 cites·124 claims
- 0973US5571626AElectroluminescent devices comprising polymers, and processes for their usePOLAROID CORP·Filed 1994·Granted Nov 5, 1996·27 cites·18 claims
- 1070US7480084B2Holographic filter with a wide angular field of view and a narrow spectral bandwidthSTX APRILIS INC·Filed 2005·Granted Jan 20, 2009·4 cites·7 claims
- 1167US4535041AStabilization of hologramsPOLAROID CORP·Filed 1984·Granted Aug 13, 1985·19 cites·10 claims
- 1266US7297448B2Data storage medium comprising colloidal metal and preparation process thereofAPRILIS INC·Filed 2002·Granted Nov 20, 2007·6 cites·30 claims
- 1358US6881464B2Method and apparatus for producing optical recording media with accurately parallel surfacesAPRILIS INC·Filed 2002·Granted Apr 19, 2005·6 cites·84 claims
- 1457US2009325079A1Data storage medium comprising colloidal metal and preparation process thereofCETIN ERDEM A·Filed 2009·Application pending·0 cites
- 1555US5376456AElectroluminescent devices comprising polymers, and processes for their usePOLAROID CORP·Filed 1993·Granted Dec 27, 1994·15 cites·18 claims
- 1654US2008044737A1Data storage medium comprising colloidal metal and preparation process thereofAPRILIS INC·Filed 2007·Application pending·0 cites
- 1753US6904491B2Hybrid data storage systemAPRILIS INC·Filed 2002·Granted Jun 7, 2005·3 cites·60 claims
- 1847US7463799B2Temperature compensation of Bragg reflection gratingsSTX APRILIS INC·Filed 2002·Granted Dec 9, 2008·1 cites·12 claims
- 1929US2003157414A1Holographic medium and process for use thereofFiled 1997·Application pending·0 cites
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