QUANTRAD SENSOR, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4910436 Wide area VUV lamp with grids and purging jetsExpiredFeb 12, 88Mar 20, 90[C03C, B05D, H05H]
4904866 Wide area soft vacuum abnormal glow electron beam discharge hardening processExpiredNov 17, 88Feb 27, 90[H01J]
4827137 Soft vacuum electron beam patterning apparatus and processExpiredApr 28, 86May 02, 89[H01V]
4801839 Mounting of a cold cathode directly to a vacuum chamber wallExpiredDec 08, 86Jan 31, 89[H01J]
4782267 In-situ wide area vacuum ultraviolet lampExpiredFeb 07, 86Nov 01, 88[C23C, B05D]
4737688 Wide area source of multiply ionized atomic or molecular speciesExpiredJul 22, 86Apr 12, 88[H05H]
4641316 D.C. electron beam method and apparatus for continuous laser excitationExpiredOct 01, 84Feb 03, 87[H01S]
4509451 Electron beam induced chemical vapor depositionExpiredMar 29, 83Apr 09, 85[C23C, B05D]
4496449 Electron beam etching of integrated circuit structuresExpiredDec 16, 83Jan 29, 85[C23C]

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