Inventor · disambiguated record
Katsunao Chikahata
Also filed as: CHIKAHATA KATSUNAO
4 granted patents·3 pending applications·62 citations·filing 1991–2009
77Inventor score
Top patents by PatentIndex Score
7 records- 0181US5259860ASintered metal parts and their production methodHITACHI POWDERED METALS·Filed 1991·Granted Nov 9, 1993·31 cites·14 claims
- 0278US6616726B2Material for valve guidesHITACHI POWDERED METALS·Filed 2001·Granted Sep 9, 2003·12 cites·9 claims
- 0366US7040601B2Valve guide for internal combustion engine made from iron base sintered alloyHONDA MOTOR CO LTD·Filed 2002·Granted May 9, 2006·5 cites·7 claims
- 0457US6012703AValve guide and process for manufacturing thereofHITACHI POWDERED METALS·Filed 1997·Granted Jan 11, 2000·14 cites·7 claims
- 0551US2010080725A1Production method for sintered valve guideHITACHI POWDERED METALS·Filed 2009·Application pending·0 cites
- 0642US2006032328A1Sintered valve guide and manufacturing method thereofCHIKAHATA KATSUNAO·Filed 2005·Application pending·0 cites
- 0737US2005095163A1Production method for sintered component made of stainless steel with high corrosion resistanceHITACHI POWDERED METALS·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →