TK

Tomoyuki Kawahara

HC Hitachi Koki Co.: 16 patents #53 of 888Top 6%
PA Panasonic: 2 patents #9,678 of 21,108Top 50%
Overall (All Time): #256,487 of 4,157,543Top 7%
18
Patents All Time

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDate
D792182 Jig saw Megumi Ishikawa, Satoshi Iwata 2017-07-18
D689432 Rechargeable battery Takafumi Itoh, Kenichi Yamada, Haruhisa Fujisawa 2013-09-10
D678023 Portable plane Takafumi Itoh, Takeshi Taniguchi, Masanori Okada, Satoshi Iwata 2013-03-19
D675500 Portable electric driver Takeshi Taniguchi, Masanori Okada, Takeshi Takeda 2013-02-05
D623197 Engine Satoshi Hotta, Takahiro Hirai, Fumikazu Hirasawa, Takamoto Horiuchi, Masanori Okada +1 more 2010-09-07
D622661 Battery pack Kenichi Yamada, Toshio Mizoguchi 2010-08-31
7778796 Miter saw for displaying angle of cutter blade cutting workpiece Nobuhiro Takano, Eisaku Oka, Hiromi Ozawa, Yoshikazu Kawano, Kenrou Ishimaru +1 more 2010-08-17
D618976 Nailing machine Takeshi Taniguchi, Takashi Mori 2010-07-06
D595552 Portable electric saw Takeshi Taniguchi, Hitoshi Tsuzuki 2009-07-07
D592028 Portable electric hammer drill Takeshi Taniguchi, Hitoshi Tsuzuki, Shinichi Kakefuda, Atsuyuki Kikuchi, Shingo Yamazaki 2009-05-12
D591916 Engine blower Shingo Kosugi, Masato Sakai, Shinichi Kakefuda, Yoshikazu Yokoyama, Takahiro Hirai 2009-05-05
D585716 Portable electric driver Takeshi Taniguchi, Hitoshi Tsuzuki, Yasutaka Shimizu 2009-02-03
D553562 Battery pack Masanori Okada, Masato Sakai, Toshio Mizoguchi 2007-10-23
D551930 Reciprocating saw Kenichi Yamada, Toshihiko Tachibana, Masanori Okada, Shinichi Kakefuda 2007-10-02
D544436 Battery pack Masanori Okada, Masato Sakai, Kazunobu Yoshimura 2007-06-12
7039548 Miter saw for displaying angle of cutter blade cutting workpiece Nobuhiro Takano, Eisaku Oka, Hiromi Ozawa, Yoshikazu Kawano, Kenrou Ishimaru +1 more 2006-05-02
6132588 Method for plating independent conductor circuit Izuru Yoshizawa, Hiroaki Takahashi 2000-10-17
5925403 Method of coating a copper film on a ceramic substrate Izuru Yoshizawa, Hiroaki Takahashi 1999-07-20