Inventor · disambiguated record
Hisayoshi Nakatsuka
Also filed as: NAKATSUKA HISAYOSHI
9 granted patents·18 citations·filing 1976–1984
81Inventor score
Top patents by PatentIndex Score
9 records- 0150US4147364ANon-vibration tone armNAMIKI PRECISION JEWEL CO LTD·Filed 1977·Granted Apr 3, 1979·7 cites·10 claims
- 0233US4138122APickupORTOFON MFG AS·Filed 1977·Granted Feb 6, 1979·5 cites·5 claims
- 0330US4162076ATone armNAMIKI PRECISION JEWEL CO LTD·Filed 1977·Granted Jul 24, 1979·1 cites·9 claims
- 0430US4145582AMoving coil pickup having a substantially square magnetic armature mounted in an air gap adjacent a square face magnetic memberORTOFON MFG AS·Filed 1976·Granted Mar 20, 1979·3 cites·2 claims
- 0529US4388486AShielded lineNAMIKI PRECISION JEWEL CO LTD·Filed 1981·Granted Jun 14, 1983·2 cites·4 claims
- 0627US4644518ACircuit connection for coils wound on yoke of an electromagnetic pickup cartridgeNAMIKI PRECISION JEWEL CO LTD·Filed 1984·Granted Feb 17, 1987·0 cites·5 claims
- 0727US4637009AGrounding circuit for pickup cartridge moving coilNAMIKI PRECISION JEWEL CO LTD·Filed 1984·Granted Jan 13, 1987·0 cites·2 claims
- 0827US4183537ALateral pressure detector for use with a phonograph record playerNAMIKI PRECISION JEWEL CO LTD·Filed 1977·Granted Jan 15, 1980·0 cites·7 claims
- 0926US4220341APickupORTOFON MFG AS·Filed 1979·Granted Sep 2, 1980·0 cites·6 claims
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