U.S. Precision Lens Incorporated
Patent Owner
Stats
- 20 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Mar 04, 2003 most recent publication
Details
- 20 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 3,413 Total Citation Count
- Sep 05, 1979 Earliest Filing
- 36 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
6195209 Projection lenses having reduced lateral color for use with pixelized panelsMay 04, 99Feb 27, 01[G02B]
6169636 Focus corrector for zoom projection lenses used with pixelized panelsAug 26, 99Jan 02, 01[G02B]
5991089 Long focal length projection lenses for use with large pixelized panelsJan 28, 98Nov 23, 99[G02B]
5969876 Projection lenses having large back focal length to focal length ratiosFeb 08, 99Oct 19, 99[G02B]
5870228 Projection lenses having larger back focal length to focal length ratiosMay 16, 97Feb 09, 99[G02B]
5625495 Telecentric lens systems for forming an image of an object composed of pixelsDec 07, 94Apr 29, 97[G02B]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6529336 Color corrected projection lenses employing diffractive optical surfacesExpiredMay 11, 01Mar 04, 03[G02B]
6445512 Projection television lens systems having improved modulation transfer functionsExpiredDec 22, 00Sep 03, 02[G02B]
6301056 High speed retrofocus projection television lens systemsExpiredNov 08, 99Oct 09, 01[H04N, G02B]
6285416 Apparatus and method for a focus position lock device for a projection television lens assemblyExpiredMay 06, 99Sep 04, 01[H04N]
6141154 Focusable, color corrected, high performance projection lens systemsExpiredAug 20, 98Oct 31, 00[G02B]
6025959 Color corrected projection lenses for use with curved faceplate cathode ray tubesExpiredJan 12, 98Feb 15, 00[G02B]
5936776 Focusable front projection lens systems for use with large screen formatsExpiredSep 12, 97Aug 10, 99[G02B]
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