Inventor · disambiguated record
Tsugio Yoshikawa
Also filed as: YOSHIKAWA TSUGIO
4 granted patents·80 citations·filing 1976–1996
79Inventor score
Files withHITACHI LTD4
Top patents by PatentIndex Score
4 records- 0179US5035579AWater-turbine runner and process for manufacturing the sameHITACHI LTD·Filed 1989·Granted Jul 30, 1991·40 cites·14 claims
- 0270US5601411AStainless steel type 13Cr5Ni having high toughness, and usage the sameHITACHI LTD·Filed 1995·Granted Feb 11, 1997·21 cites·4 claims
- 0345US5879132AStainless steel type 13Cr5Ni having high toughness, and usage of the sameHITACHI LTD·Filed 1996·Granted Mar 9, 1999·8 cites·15 claims
- 0443US4040766AGate protecting device for hydraulic machinesHITACHI LTD·Filed 1976·Granted Aug 9, 1977·11 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →