Inventor · disambiguated record
Iwao Tsugawa
Also filed as: TSUGAWA IWAO
5 granted patents·175 citations·filing 1988–1997
83Inventor score
Technology areasG11B
Files withFUJITSU LTD5
Top patents by PatentIndex Score
5 records- 0194US5661703AOptical recording medium having a non-volatile identification code and method for encoding data using sameFUJITSU LTD·Filed 1996·Granted Aug 26, 1997·95 cites·33 claims
- 0287US5812501AOptical recording medium having a non-volatile identification code and method for encoding data using sameFUJITSU LTD·Filed 1997·Granted Sep 22, 1998·43 cites·8 claims
- 0379US4889746AProcess for manufacturing an optical recording mediumFUJITSU LTD·Filed 1988·Granted Dec 26, 1989·25 cites·25 claims
- 0446US5144618AOptical disc mediumFUJITSU LTD·Filed 1989·Granted Sep 1, 1992·6 cites·9 claims
- 0546US4984232ACompatible optical diskFUJITSU LTD·Filed 1989·Granted Jan 8, 1991·6 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →