Inventor · disambiguated record
Masayoshi Hayakawa
Also filed as: HAYAKAWA MASAYOSHI
4 granted patents·34 citations·filing 1996–1999
74Inventor score
Technology areasH01H
Files withHITACHI LTD4
Top patents by PatentIndex Score
4 records- 0167US5719365AInsulated type switching deviceHITACHI LTD·Filed 1996·Granted Feb 17, 1998·19 cites·11 claims
- 0239US6005213AInsulated type switchgear deviceHITACHI LTD·Filed 1998·Granted Dec 21, 1999·7 cites·28 claims
- 0339US5952636AVacuum type switch gear device having L shaped stationary and movable conductors arrangementHITACHI LTD·Filed 1998·Granted Sep 14, 1999·7 cites·8 claims
- 0427USRE37244EInsulated type switching deviceHITACHI LTD·Filed 1999·Granted Jun 26, 2001·1 cites·29 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →