Inventor · disambiguated record
Sumihisa Kotani
Also filed as: KOTANI SUMIHISA
7 granted patents·370 citations·filing 1980–1996
88Inventor score
Top patents by PatentIndex Score
7 records- 0198US4475360ARefrigeration system incorporating scroll type compressorHITACHI LTD·Filed 1983·Granted Oct 9, 1984·132 cites·13 claims
- 0297US4382370ARefrigerating system using scroll type compressorHITACHI LTD·Filed 1981·Granted May 10, 1983·116 cites·13 claims
- 0393US4560330AScroll device with suction chamber pressure reliefHITACHI LTD·Filed 1984·Granted Dec 24, 1985·60 cites·10 claims
- 0470US4557675AScroll-type fluid machine with back pressure chamber biasing an orbiting scroll memberHITACHI LTD·Filed 1984·Granted Dec 10, 1985·22 cites·6 claims
- 0569US5682588AMethod for producing ferrous sintered alloy having quenched structureHITACHI POWDERED METALS·Filed 1996·Granted Oct 28, 1997·22 cites·3 claims
- 0654US4579512AScroll-type fluid machine with radial clearance between wrapsHITACHI LTD·Filed 1984·Granted Apr 1, 1986·13 cites·3 claims
- 0741US4392423APrinting hammer driving apparatusHITACHI LTD·Filed 1980·Granted Jul 12, 1983·5 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Sumihisa Kotani 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 →