Inventor
INGWALL RICHARD T
US16 patents
⚠️ This page may combine multiple inventors who share the name “INGWALL RICHARD T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POLAROID CORP
8 patentsUS4970129ANov 13, 1990
Holograms
POLAROID CORP144 citations98
US5759721AJun 2, 1998
Holographic medium and process for use thereof
POLAROID CORP167 citations97
US5414069AMay 9, 1995
Electroluminescent polymers, processes for their use, and electroluminescent devices containing these polymers
POLAROID CORP116 citations97
US5198912AMar 30, 1993
Volume phase hologram with liquid crystal in microvoids between fringes
POLAROID CORP172 citations97
US4588664AMay 13, 1986
Photopolymerizable compositions used in holograms
POLAROID CORP104 citations93
US5571626ANov 5, 1996
Electroluminescent devices comprising polymers, and processes for their use
POLAROID CORP27 citations91
US4535041AAug 13, 1985
Stabilization of holograms
POLAROID CORP19 citations79
US5376456ADec 27, 1994
Electroluminescent devices comprising polymers, and processes for their use
POLAROID CORP15 citations72
APRILIS INC
6 patentsUS6992805B2Jan 31, 2006
Holographic filter with a wide angular field of view and a narrow spectral bandwidth
APRILIS INC47 citations95
US7787110B2Aug 31, 2010
Diffractive imaging system and method for the reading and analysis of skin topology
APRILIS INC25 citations92
US7728959B2Jun 1, 2010
Acquisition of high resolution biometric images
APRILIS INC39 citations92
US6904491B2Jun 7, 2005
Hybrid data storage system
APRILIS INC3 citations62
US7297448B2Nov 20, 2007
Data storage medium comprising colloidal metal and preparation process thereof
APRILIS INC6 citations61
US6881464B2Apr 19, 2005
Method and apparatus for producing optical recording media with accurately parallel surfaces
APRILIS INC6 citations54