Inventor · disambiguated record
Sumio Hirao
Also filed as: HIRAO SUMIO
5 granted patents·104 citations·filing 1981–1989
82Inventor score
Files withNISSAN MOTOR5
Top patents by PatentIndex Score
5 records- 0185US4396822AWelding wire for automatic arc weldingNISSAN MOTOR·Filed 1981·Granted Aug 2, 1983·42 cites·20 claims
- 0273US4659245AGas turbineNISSAN MOTOR·Filed 1986·Granted Apr 21, 1987·29 cites·4 claims
- 0356US4394560ACovered electrode containing zirconium for shielded metal arc weldingNISSAN MOTOR·Filed 1981·Granted Jul 19, 1983·13 cites·9 claims
- 0452US4875444ASwirl chamber for diesel engines and the likeNISSAN MOTOR·Filed 1988·Granted Oct 24, 1989·12 cites·8 claims
- 0540US5014604APiston for internal combustion engineNISSAN MOTOR·Filed 1989·Granted May 14, 1991·8 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →