Inventor · disambiguated record
Yasuo Kamitsuma
Also filed as: KAMITSUMA YASUO
5 granted patents·145 citations·filing 1989–1994
84Inventor score
Files withHITACHI LTD5
Top patents by PatentIndex Score
5 records- 0190US4944663ARotary compressor having oxidizing and nitriding surface treatmentHITACHI LTD·Filed 1989·Granted Jul 31, 1990·59 cites·15 claims
- 0274US5478220ACompressor scroll made of silicon containing aluminum alloyHITACHI LTD·Filed 1994·Granted Dec 26, 1995·30 cites·2 claims
- 0373US5087181ASliding structure such as compressor or the likeHITACHI LTD·Filed 1990·Granted Feb 11, 1992·30 cites·27 claims
- 0462US5346667AMethod of manufacturing sintered aluminum alloy partsHITACHI LTD·Filed 1992·Granted Sep 13, 1994·15 cites·9 claims
- 0550US5387272AHighly ductile sintered aluminum alloy, method for production thereof and use thereofHITACHI LTD·Filed 1992·Granted Feb 7, 1995·11 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →