APA ENTERPRISES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 2360
 
 
 
F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 1109
 
 
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 1204

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5278435 High responsivity ultraviolet gallium nitride detectorJun 08, 92Jan 11, 94[H01L]
5182670 Narrow band algan filterAug 30, 91Jan 26, 93[F21V, H01L, G02B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2006/0076,502 Method and apparatus for a photodetector responsive over a selectable wavelength rangeAbandonedOct 05, 05Apr 13, 06[G01J]
6647209 Multiplexer and demultiplexer for single mode optical fiber communication linksExpiredJul 26, 99Nov 11, 03[H04J]
2003/0150,998 Device and method for ultraviolet radiation monitoringAbandonedApr 15, 03Aug 14, 03[G01J]
6441934 Multiplexer and demultiplexer for single mode optical fiber communication linksExpiredNov 13, 98Aug 27, 02[H04J]
6104074 Schottky barrier detectors for visible-blind ultraviolet detectionExpiredDec 08, 98Aug 15, 00[H01L]
5793912 Tunable receiver for a wavelength division multiplexing optical apparatus and methodExpiredDec 18, 96Aug 11, 98[G02B]
5608826 Wavelength division multiplexed optical modulator and multiplexing method using sameExpiredJun 07, 95Mar 04, 97[G02B]
5477383 Optical array method and apparatusExpiredFeb 05, 93Dec 19, 95[G02B]
5450510 Wavelength division multiplexed optical modulator and multiplexing method using sameExpiredJun 09, 94Sep 12, 95[G02B]
4759595 Integrated optic switchExpiredMar 25, 86Jul 26, 88[G02B]

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