Inventor · disambiguated record
Nobuyuki Kitagawa
Also filed as: KITAGAWA NOBUYUKI
18 granted patents·713 citations·filing 1987–2009
96Inventor score
Top patents by PatentIndex Score
18 records- 0191US6017172ACeramic insert for use with clamp type cutting toolSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Jan 25, 2000·76 cites·6 claims
- 0291US5228812AThrow-away tipped drillSUMITOMO ELECTRIC INDUSTRIES·Filed 1990·Granted Jul 20, 1993·97 cites·18 claims
- 0390US4971485ACemented carbide drillSUMITOMO ELECTRIC INDUSTRIES·Filed 1990·Granted Nov 20, 1990·47 cites·8 claims
- 0487US5871850ACoated hard metal materialSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Feb 16, 1999·67 cites·27 claims
- 0586US6183846B1Coated hard metal materialSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Feb 6, 2001·63 cites·23 claims
- 0685US6077596ACoated hard tool having multi-layer coatingSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Jun 20, 2000·74 cites·20 claims
- 0784US5981049ACoated tool and method of manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Nov 9, 1999·66 cites·29 claims
- 0882US5947651AIndexable insertSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Sep 7, 1999·49 cites·2 claims
- 0982US5624766ACemented carbide and coated cemented carbide for cutting toolSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Apr 29, 1997·44 cites·13 claims
- 1080US4769070AHigh toughness cermet and a process for the production of the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1987·Granted Sep 6, 1988·35 cites·15 claims
- 1177US5403373AHard sintered component and method of manufacturing such a componentSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Apr 4, 1995·24 cites·15 claims
- 1260US5939651ATitanium-based alloySUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Aug 17, 1999·15 cites·6 claims
- 1360US5577424ANitrogen-containing sintered hard alloySUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Nov 26, 1996·14 cites·19 claims
- 1459US6057046ANitrogen-containing sintered alloy containing a hard phaseSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted May 2, 2000·15 cites·24 claims
- 1553US5403374AWatch exterior parts and manufacturing method thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Apr 4, 1995·16 cites·21 claims
- 1648US8920079B2Joined productOZAKI KIMIHIRO·Filed 2009·Granted Dec 30, 2014·0 cites·10 claims
- 1738US5603071AMethod of preparing cemented carbide or cermet alloySUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Feb 11, 1997·6 cites·2 claims
- 1834US5354534AMethod for manufacturing sintered partsSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Oct 11, 1994·5 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →