Inventor · disambiguated record
Tatsuo Nishikawa
Also filed as: NISHIKAWA TATSUO
13 granted patents·217 citations·filing 1974–2001
92Inventor score
Top patents by PatentIndex Score
13 records- 0196US4009957ACopy paper feed systemRICOH KK·Filed 1974·Granted Mar 1, 1977·47 cites·9 claims
- 0289US3974974ABack tension imparting deviceRICOH KK·Filed 1974·Granted Aug 17, 1976·28 cites·7 claims
- 0388US3975707ADevice for controlling the density of printing charactersCANON KK·Filed 1975·Granted Aug 17, 1976·44 cites·3 claims
- 0476US5309624AMethod of making a disc recording and/or reproducing apparatusCANON DENSHI KK·Filed 1993·Granted May 10, 1994·21 cites·5 claims
- 0576US4051781AInk roller cartridgeCANON KK·Filed 1976·Granted Oct 4, 1977·26 cites·4 claims
- 0672US4061219APrinting deviceCANON KK·Filed 1975·Granted Dec 6, 1977·15 cites·6 claims
- 0758US4959740ADisc recording and/or reproducing apparatus including means for minimizing the effects of temperature changesCANON DENSHI KK·Filed 1989·Granted Sep 25, 1990·9 cites·18 claims
- 0847US5245490ADisc recording and/or reproducing apparatus including a head positioning mechanism having a spiral cam for positioning a head at a reference positionCANON DENSHI KK·Filed 1991·Granted Sep 14, 1993·7 cites·11 claims
- 0942USD468348SFileFAITH CO LTD·Filed 2001·Granted Jan 7, 2003·6 cites·1 claims
- 1042US5831789ADisc recording and/or reproducing apparatus having a disc cassette loading/discharging mechanism with a lock member responsive to a cassette insertion to unlock a sliding memberCANON DENSHI KK·Filed 1996·Granted Nov 3, 1998·5 cites·14 claims
- 1138US5319510ADisc recording and/or reproducing apparatusCANON DENSHI KK·Filed 1993·Granted Jun 7, 1994·3 cites·14 claims
- 1238US4475828ASmall printerCANON KK·Filed 1983·Granted Oct 9, 1984·3 cites·4 claims
- 1331US4424743APrinting device of type ring selection systemCANON KK·Filed 1981·Granted Jan 10, 1984·3 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Tatsuo Nishikawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →