Inventor · disambiguated record
Yoshiaki Hisagen
Also filed as: HISAGEN YOSHIAKI · TANAKA TOSHIRO · YAMADA TOSHIHIKO
10 granted patents·176 citations·filing 1974–1998
90Inventor score
Files withSONY CORP10
Top patents by PatentIndex Score
10 records- 0191US4368239AMagnetic recording mediumSONY CORP·Filed 1980·Granted Jan 11, 1983·40 cites·17 claims
- 0282US4172176AMagnetic recording mediumSONY CORP·Filed 1978·Granted Oct 23, 1979·22 cites·19 claims
- 0381US4007313AMagnetic recording mediumSONY CORP·Filed 1975·Granted Feb 8, 1977·30 cites·8 claims
- 0479US4047232ALeader tapeSONY CORP·Filed 1975·Granted Sep 6, 1977·21 cites·5 claims
- 0569US4443490AMagnetic recording mediumSONY CORP·Filed 1982·Granted Apr 17, 1984·14 cites·6 claims
- 0668US3993846AMagnetic recording mediumSONY CORP·Filed 1974·Granted Nov 23, 1976·12 cites·5 claims
- 0764US4007314AMagnetic recording medium with silane lubricantSONY CORP·Filed 1975·Granted Feb 8, 1977·18 cites·7 claims
- 0850US4131717AMagnetic recording mediumSONY CORP·Filed 1977·Granted Dec 26, 1978·10 cites·12 claims
- 0932US4156052AMagnetic recording mediumSONY CORP·Filed 1978·Granted May 22, 1979·1 cites·4 claims
- 1030US6033722AMethod for manufacturing electrodeSONY CORP·Filed 1998·Granted Mar 7, 2000·8 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →