Inventor · disambiguated record

Kazuo Sawahata

Also filed as: SAWAHATA KAZUO

2 granted patents·89 citations·filing 1984–1987

66Inventor score

Technology areasB21D B21K

Files withHITACHI LTD2

Top patents by PatentIndex Score

2 records

0192US4580431AMethod and apparatus for producing a stepped hollow articleHITACHI LTD·Filed 1984·Granted Apr 8, 1986·77 cites·6 claims
0253US4884427AMethod of producing helical internal gearHITACHI LTD·Filed 1987·Granted Dec 5, 1989·12 cites·1 claims

Join the waitlist — get patent alerts

Get an alert when Kazuo Sawahata files or is granted a new patent.

We store only your email — no account needed. See our privacy policy.

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →