NEC Kansai, Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2003/0040,246 Method of manufacturing cathode structure and color cathode ray tubeAbandonedAug 20, 02Feb 27, 03[H01J]
6313574 Shadow mask with specifically shaped aperturesExpiredJul 16, 99Nov 06, 01[H01J]
5096450 Method for fabricating an impregnated type cathodeExpiredMar 26, 91Mar 17, 92[H01J]
5029258 Image display device and its driving methodExpiredSep 27, 89Jul 02, 91[H01J, G09G]
4652872 Matrix display panel driving systemExpiredJun 28, 84Mar 24, 87[G09G]
4569084 Frequency converter, especially CATV converterExpiredMay 29, 84Feb 04, 86[H04B]
4500867 Joystick controller using magnetosensitive elements with bias magnetsExpiredJun 11, 84Feb 19, 85[H01C]
4486817 Method of manufacturing an electrical circuit wiring arrangementExpiredAug 19, 82Dec 04, 84[H05K]
4429291 Rotary pre-setting fine tuning device for a turret type television tunerExpiredDec 09, 81Jan 31, 84[H03J]
4423438 Projection type cathode ray tube with masking meansExpiredJan 11, 82Dec 27, 83[H04N]

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