Inventor
COWAN JAMES J
US15 patents
⚠️ This page may combine multiple inventors who share the name “COWAN JAMES J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POLAROID CORP
7 patentsUS4999234AMar 12, 1991
Holographic optical data storage medium
POLAROID CORP149 citations98
US4888260ADec 19, 1989
Volume phase reflection holograms and methods for fabricating them
POLAROID CORP112 citations96
US4839250AJun 13, 1989
Method of replicating volume phase reflection holograms
POLAROID CORP54 citations96
US4496216AJan 29, 1985
Method and apparatus for exposing photosensitive material
POLAROID CORP113 citations96
US4402571ASep 6, 1983
Method for producing a surface relief pattern
POLAROID CORP118 citations95
US4874213AOct 17, 1989
Method of forming volume phase reflection holograms
POLAROID CORP49 citations92
US4469407ASep 4, 1984
Laser apodizing filter
POLAROID CORP36 citations86
COHO HOLDINGS LLC
3 patentsUS6870624B2Mar 22, 2005
Optical wavelength resonant device for chemical sensing
COHO HOLDINGS LLC52 citations91
US6707518B1Mar 16, 2004
Electro-optic device allowing wavelength tuning
COHO HOLDINGS LLC48 citations91
US6791757B2Sep 14, 2004
Optical device for filtering and sensing
COHO HOLDINGS LLC16 citations83