OI

Osamu Izumisawa

SK Sp Air Kabushiki Kaisha: 25 patents #1 of 5Top 20%
SI Shinano Pneumatic Industries: 12 patents #1 of 3Top 35%
📍 Oshima, JP: #11 of 1,090 inventorsTop 2%
Overall (All Time): #71,129 of 4,157,543Top 2%
43
Patents All Time

Issued Patents All Time

Showing 1–25 of 43 patents

Patent #TitleCo-InventorsDate
7404450 Pneumatic rotary tool Kunihiro Yamamoto 2008-07-29
7080578 Hand tool with impact drive and speed reducing mechanism 2006-07-25
RE39009 Hand-held pneumatic rotary drive device 2006-03-14
6880645 Pneumatic rotary tool 2005-04-19
6796386 Pneumatic rotary tool Kunihiro Yamamoto 2004-09-28
6695072 Hand-held pneumatic rotary drive device having an adjustable air exhaust 2004-02-24
6578643 Pneumatic ratchet drive wrench 2003-06-17
6443239 Pneumatic rotary tool 2002-09-03
6311583 Ratchet wrench with pivotable head 2001-11-06
D440847 Square drive wrench having angled head 2001-04-24
D440848 Square drive wrench having offset head 2001-04-24
D439486 Square drive wrench having angled head 2001-03-27
D439485 Square drive wrench having offset head 2001-03-27
D437760 Impact wrench 2001-02-20
D436818 Impact wrench 2001-01-30
D435204 Square drive wrench 2000-12-19
6158528 Hand-held pneumatic rotary drive device 2000-12-12
D434958 Impact wrench 2000-12-12
D434298 Impact wrench 2000-11-28
D430995 Miniature sander 2000-09-19
6065216 Reciprocating pneumatic saw 2000-05-23
5918686 Pneumatic rotary tool 1999-07-06
5919085 Power abrading tool having dust abatement feature 1999-07-06
D408243 Pneumatic hand tool 1999-04-20
D403564 Impact wrench 1999-01-05