Inventor · disambiguated record
Katsumi Hirooka
Also filed as: HIROOKA KATSUMI
9 granted patents·1 pending application·269 citations·filing 1989–2004
90Inventor score
Top patents by PatentIndex Score
10 records- 0197US5074760AScroll type compressorMITSUBISHI HEAVY IND LTD·Filed 1989·Granted Dec 24, 1991·110 cites·5 claims
- 0292US5074761ARotary compressorMITSUBISHI HEAVY IND LTD·Filed 1991·Granted Dec 24, 1991·59 cites·9 claims
- 0384US6106254AClosed-type scroll compressorMITSUBISHI HEAVY IND LTD·Filed 1998·Granted Aug 22, 2000·42 cites·4 claims
- 0462US7585160B2Hermetic compressorDAIKIN IND LTD·Filed 2004·Granted Sep 8, 2009·9 cites·14 claims
- 0562US6012911AScroll type compressor having an oil supply path for the eccentric bearingMITSUBISHI HEAVY IND LTD·Filed 1997·Granted Jan 11, 2000·15 cites·11 claims
- 0652US5584678AScroll type fluid machine having tip seals of different carbon fiber composition ratesMITSUBISHI HEAVY IND LTD·Filed 1995·Granted Dec 17, 1996·16 cites·4 claims
- 0751US6361296B1Scroll type compressor having a gap that collects and supplies oil to an oil supply path or the eccentric bearingMITSUBISHI HEAVY IND LTD·Filed 1999·Granted Mar 26, 2002·9 cites·15 claims
- 0837US5316454AFluid pump and rotary machine having said fluid pumpMITSUBISHI HEAVY IND LTD·Filed 1992·Granted May 31, 1994·7 cites·11 claims
- 0931US5988999AScroll type fluid machine having a reduced Oldham ring gapMITSUBISHI HEAVY IND LTD·Filed 1997·Granted Nov 23, 1999·2 cites·1 claims
- 1028US2001001638A1Sealed-type compressorFiled 1999·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →