Greyhawk Systems, Inc.
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Feb 28, 1995 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 149 Total Citation Count
- May 09, 1986 Earliest Filing
- 8 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5394254 Light valve projector assembly including fiber optic plate with fiber bundle perimeter less than twice as reflective as elsewhereExpiredJan 03, 94Feb 28, 95[G02F]
5374968 Optics for a single-lens video projector with color-specific polarization channelsExpiredNov 08, 93Dec 20, 94[G03B]
5365287 Three color channel, two-elevation optics for a single lens video projectorExpiredNov 08, 93Nov 15, 94[G03B]
4818098 Apparatus and method of forming and projecting high precision optical imagesExpiredMay 09, 86Apr 04, 89[G03B]
4802752 Method of and apparatus for mounting a mirror to a rotatable shaftExpiredMay 04, 88Feb 07, 89[G02B]
4799770 Liquid crystal cell for image projections and method of operating sameExpiredMar 08, 88Jan 24, 89[G02F, G11C]
4775788 Apparatus for detecting position of a rotating element using a two-grating moire patternExpiredOct 03, 86Oct 04, 88[H01J]
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