KH

Katsuhiko Hirao

OC Osaka Gas Co.: 3 patents #83 of 689Top 15%
MB Mitsuboshi Belting: 1 patents #183 of 333Top 55%
📍 Inuyama, JP: #91 of 342 inventorsTop 30%
Overall (All Time): #1,223,277 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8899968 Combustible gas processing system and combustible gas processing method Kenji Seki, Masataka Masuda, Hirofumi Ohtsuka, Etsuo Shito 2014-12-02
8328913 Flammable gas concentration system Etsuo Shito, Kenji Seki 2012-12-11
8262771 Flammable gas concentration device and flammable gas concentration method Kenji Seki, Etsuo Shito 2012-09-11
5893310 Method and apparatus for cutting a rubber sheet material used to form power transmission belts Akihiro Nagata, Toshihiro Oonishi, Toshihiro Ueda 1999-04-13