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Patents

34 Patent Applications
15 Issued US Patents
14 Applications pending

US Issued Patents

Patent NoTitleIssue Date
4,167,308Electrochromic D isplay DeviceSep 11, 1979
4,167,309Electrochromic Display DeviceSep 11, 1979
4,545,650Liquid Filled Electro-optic Display Cell with Diaphragm SealOct 8, 1985
4,575,190Hermetic Electro-optic Display CellMar 11, 1986
4,684,219Display Cell with Self-sealing, Collapsible PlugAug 4, 1987
5,179,483Method for Controlling Airflow through a Disc File SpindleJan 12, 1993
5,417,791Faceplate Bonding Process for a Visual Display UnitMay 23, 1995
5,799,231Variable Index Distributed MirrorAug 25, 1998
5,801,796Stacked Parallax-Free Liquid Crystal Display CellSep 1, 1998
5,831,698Electrically Variable DiffuserNov 3, 1998
5,847,860High Density Electrochromic DisplayDec 8, 1998
6,055,031High Reflectivity Liquid Crystal Display CellApr 25, 2000
6,130,733Light Scattering Display having a Solid State Selectively Reflective Layer formed Inside the Display CellOct 10, 2000
6,181,307 B1Photo-Cathode Electron Source Having an Extractor GridJan 30, 2001
6,540,938 B1Liquid Crystalline Light-Modulating DeviceApr 1, 2003

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