U.S. Precision Lens Incorporated

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 19186
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 2240
 
  
 
G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR 196

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6461000 Optical systems for projection displaysMar 20, 00Oct 08, 02[G02B, G03B]
6417971 Zoom projection lens having a lens correction unitFeb 04, 00Jul 09, 02[G02B]
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]
6023375 Projection lenses for use with large pixelized panelsAug 11, 97Feb 08, 00[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]
5900989 Mini-zoom projection lenses for use with pixelized panelsAug 11, 97May 04, 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]

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Expired/Abandoned/Withdrawn Patents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]
6509937 High performance projection television lens systemsExpiredJan 10, 00Jan 21, 03[H04N, G02B]
6490087 Optical systems for reflective LCD'sExpiredApr 10, 00Dec 03, 02[G02B, G02F]
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]
6297860 Partial color-corrected projection lens systemExpiredOct 27, 98Oct 02, 01[H04N]
6285416 Apparatus and method for a focus position lock device for a projection television lens assemblyExpiredMay 06, 99Sep 04, 01[H04N]
6196755 Locking device for projection television lens assemblyExpiredMay 06, 99Mar 06, 01[F16B]
6142435 Integral mounting base support for componentsExpiredJun 18, 99Nov 07, 00[A47B]
6141154 Focusable, color corrected, high performance projection lens systemsExpiredAug 20, 98Oct 31, 00[G02B]
6115082 Coupler systems for projection televisionsExpiredSep 04, 98Sep 05, 00[H04N]
6104554 Projection television lens assemblyExpiredJun 18, 99Aug 15, 00[G02B]
6097551 Lenses for electronic imaging systemsExpiredMay 25, 99Aug 01, 00[G02B]
6094311 LCD projection lensExpiredOct 27, 98Jul 25, 00[G02B]
6025959 Color corrected projection lenses for use with curved faceplate cathode ray tubesExpiredJan 12, 98Feb 15, 00[G02B]
5969874 Long focal length projection lensesExpiredMay 16, 97Oct 19, 99[G02B]
5963375 Athermal LCD projection lensExpiredJan 24, 97Oct 05, 99[G02B]
5936776 Focusable front projection lens systems for use with large screen formatsExpiredSep 12, 97Aug 10, 99[G02B]
5900987 Zoom projection lenses for use with pixelized panelsExpiredFeb 12, 98May 04, 99[G02B]
5841587 LCD projection lensExpiredNov 27, 96Nov 24, 98[G02B]

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