Inventor · disambiguated record
Osamu Izumisawa
Also filed as: IZUMISAWA OSAMU
42 granted patents·4 pending applications·3,005 citations·filing 1979–2007
99Inventor score
Files withS P AIR KK14SHINANO PNEUMATIC IND INC12IZUMISAWA OSAMU8S P AIR KABUSIKI KAISHA6SP AIR KABUSHIKI KAISHA2
Top patents by PatentIndex Score
46 records- 0199US5784934ARatchet wrench with pivotable headSHINANO PNEUMATIC IND INC·Filed 1997·Granted Jul 28, 1998·1.6k cites·20 claims
- 0298US6158528AHand-held pneumatic rotary drive deviceS P AIR KK·Filed 2000·Granted Dec 12, 2000·70 cites·6 claims
- 0397USD436818SImpact wrenchS P AIR KK·Filed 2000·Granted Jan 30, 2001·79 cites·1 claims
- 0497US5918686APneumatic rotary toolS P AIR KABUSIKI KAISHA·Filed 1997·Granted Jul 6, 1999·117 cites·3 claims
- 0596US6796386B2Pneumatic rotary toolS P AIR KK·Filed 2001·Granted Sep 28, 2004·62 cites·22 claims
- 0696US6311583B1Ratchet wrench with pivotable headS P AIR KK·Filed 2000·Granted Nov 6, 2001·65 cites·10 claims
- 0796USD434298SImpact wrenchS P AIR KABUSIKI KAISHA·Filed 1999·Granted Nov 28, 2000·69 cites·1 claims
- 0893US6443239B1Pneumatic rotary toolS P AIR KK·Filed 2000·Granted Sep 3, 2002·53 cites·18 claims
- 0993USD408243SPneumatic hand toolS P AIR KABUSIKI KAISHA·Filed 1998·Granted Apr 20, 1999·46 cites·1 claims
- 1093USD269938SAir ratchet wrenchIZUMISAWA OSAMU·Filed 1981·Granted Aug 2, 1983·32 cites·1 claims
- 1192USD403564SImpact wrenchS P AIR KABUSIKI KAISHA·Filed 1997·Granted Jan 5, 1999·46 cites·1 claims
- 1291US7080578B2Hand tool with impact drive and speed reducing mechanismSP AIR KK CORP·Filed 2004·Granted Jul 25, 2006·50 cites·23 claims
- 1391USD440848SSquare drive wrench having offset headS P AIR KK·Filed 2000·Granted Apr 24, 2001·38 cites·1 claims
- 1491US4821611ATightening deviceSHINANO PNEUMATIC IND INC·Filed 1987·Granted Apr 18, 1989·53 cites·20 claims
- 1589US6578643B2Pneumatic ratchet drive wrenchS P AIR KK·Filed 2001·Granted Jun 17, 2003·37 cites·19 claims
- 1689USD334124SPneumatic socket wrenchSHINANO PNEUMATIC IND INC·Filed 1990·Granted Mar 23, 1993·32 cites·1 claims
- 1788US6695072B2Hand-held pneumatic rotary drive device having an adjustable air exhaustS P AIR KABUSHIKI KAISHA·Filed 2001·Granted Feb 24, 2004·33 cites·6 claims
- 1888USD265962SRatchet type socket wrenchIZUMISAWA OSAMU·Filed 1979·Granted Aug 31, 1982·21 cites·1 claims
- 1987US5919085APower abrading tool having dust abatement featureS P AIR KABUSIKI KAISHA·Filed 1997·Granted Jul 6, 1999·74 cites·10 claims
- 2086US7404450B2Pneumatic rotary toolS P AIR KK·Filed 2001·Granted Jul 29, 2008·27 cites·36 claims
- 2186US6880645B2Pneumatic rotary toolS P AIR KK·Filed 2002·Granted Apr 19, 2005·59 cites·25 claims
- 2285USD437760SImpact wrenchSP AIR KABUSIKI KAISHA·Filed 1999·Granted Feb 20, 2001·32 cites·1 claims
- 2385US5199505ARotary impact toolSHINANO PNEUMATIC IND INC·Filed 1991·Granted Apr 6, 1993·50 cites·14 claims
- 2484USD357848SAngle head die grinderSHINANO PNEUMATIC IND INC·Filed 1994·Granted May 2, 1995·24 cites·1 claims
- 2584USD269846SAir grinderIZUMISAWA OSAMU·Filed 1981·Granted Jul 26, 1983·19 cites·1 claims
- 2681USD334125SPneumatic socket wrenchSHINANO PNEUMATIC IND INC·Filed 1991·Granted Mar 23, 1993·22 cites·1 claims
- 2780USD353984SOrbital sanderSHINANO PNEUMATIC IND INC·Filed 1993·Granted Jan 3, 1995·20 cites·1 claims
- 2880USD269847SAir grinderIZUMISAWA OSAMU·Filed 1981·Granted Jul 26, 1983·16 cites·1 claims
- 2979USD430995SMiniature sanderS P AIR KK·Filed 1999·Granted Sep 19, 2000·21 cites·1 claims
- 3077USRE39009EHand-held pneumatic rotary drive deviceS P AIR KK·Filed 2002·Granted Mar 14, 2006·16 cites·19 claims
- 3176USD361028SAngle head die grinderIZUMISAWA OSAMU·Filed 1994·Granted Aug 8, 1995·17 cites·1 claims
- 3276USD356017SMiniature orbital sanderSHINANO PNEUMATIC IND INC·Filed 1993·Granted Mar 7, 1995·17 cites·1 claims
- 3371USD354424SMiniature dual action orbital sanderSHINANO PNEUMATIC IND INC·Filed 1993·Granted Jan 17, 1995·14 cites·1 claims
- 3464US6065216AReciprocating pneumatic sawS P AIR KABUSIKI KAISHA·Filed 1999·Granted May 23, 2000·23 cites·8 claims
- 3561USD300313SPortable pneumatic toolIZUMISAWA OSAMU·Filed 1985·Granted Mar 21, 1989·9 cites·1 claims
- 3656USD435204SSquare drive wrenchSP AIR KABASIKI KAISHA·Filed 1999·Granted Dec 19, 2000·10 cites·1 claims
- 3752US2007151075A1Pneumatic rotary toolSP AIR KABUSHIKI KAISHA·Filed 2007·Application pending·0 cites
- 3849US2006179667A1Automatic sawIZUMISAWA OSAMU·Filed 2003·Application pending·0 cites
- 3949US2009075572A1Pneumatic Die Grinder Operable as Blow GunSP AIR KABUSHIKI KAISHA·Filed 2007·Application pending·0 cites
- 4047US2006266537A1Rotary impact tool having a ski-jump clutch mechanismIZUMISAWA OSAMU·Filed 2005·Application pending·0 cites
- 4145USD440847SSquare drive wrench having angled headS P AIR KK·Filed 2000·Granted Apr 24, 2001·4 cites·1 claims
- 4245USD439485SSquare drive wrench having offset headS P AIR KK·Filed 2000·Granted Mar 27, 2001·4 cites·1 claims
- 4343USD349027SMiniature butterfly impact wrenchSHINANO PNEUMATIC IND INC·Filed 1993·Granted Jul 26, 1994·4 cites·1 claims
- 4441USD353757SDual-acting sanderSHINANO PNEUMATIC IND INC·Filed 1993·Granted Dec 27, 1994·3 cites·1 claims
- 4540USD439486SSquare drive wrench having angled headS P AIR KK·Filed 2000·Granted Mar 27, 2001·3 cites·1 claims
- 4631USD353525SMiniature dual-acting sanderSHINANO PNEUMATIC IND INC·Filed 1993·Granted Dec 20, 1994·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →