Inventor · disambiguated record
Kazuhisa Mayumi
Also filed as: MAYUMI KAZUHISA
2 granted patents·41 citations·filing 1979–1989
62Inventor score
Files withTOYOTA MOTOR CO LTD2
Top patents by PatentIndex Score
2 records- 0174US4899702AAluminum alloy piston and piston-ring assembly treated to suppress agglutination of the piston alloy to a piston-ringTOYOTA MOTOR CO LTD·Filed 1989·Granted Feb 13, 1990·31 cites·10 claims
- 0248US4289990ASpark plug with a stepped insulator and an inner constriction in the housingTOYOTA MOTOR CO LTD·Filed 1979·Granted Sep 15, 1981·10 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →