Inventor · disambiguated record
Eturou Katahira
Also filed as: ISHIDA YASUHIKO · KATAHIRA ETUROU
3 granted patents·41 citations·filing 1977–1977
70Inventor score
Technology areasF01N
Files withNIPPON SOKEN3
Top patents by PatentIndex Score
3 records- 0174US4175386AExhaust gas purification apparatus for an internal combustion engineNIPPON SOKEN·Filed 1977·Granted Nov 27, 1979·24 cites·7 claims
- 0250US4147030AEngine exhaust gas purification systemNIPPON SOKEN·Filed 1977·Granted Apr 3, 1979·10 cites·6 claims
- 0344US4191013ADevice for purifying exhaust gases from internal combustion engineNIPPON SOKEN·Filed 1977·Granted Mar 4, 1980·7 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →