HF

Haruhisa Fujisawa

HC Hitachi Koki Co.: 29 patents #15 of 888Top 2%
KC Koki Holdings Co.: 1 patents #124 of 215Top 60%
📍 Hitachinaka, JP: #141 of 2,447 inventorsTop 6%
Overall (All Time): #123,673 of 4,157,543Top 3%
30
Patents All Time

Issued Patents All Time

Showing 26–30 of 30 patents

Patent #TitleCo-InventorsDate
7121442 Combustion-type power tool Yoshitaka Akiba, Tomomasa Nishikawa, Kunio Yamamoto, Shinki Ohtsu 2006-10-17
7073468 Combustion type power tool having motor suspension arrangement Yoshitaka Akiba 2006-07-11
7063052 Combustion type power tool having fin in low turbulent combustion region within combustion chamber Tomomasa Nishikawa, Yoshitaka Akiba 2006-06-20
7021251 Combustion type power tool having avoiding unit for avoiding overheating to mechanical components in the tool Yasuki Ohmori, Yasuo Sasaki 2006-04-04
6886730 Combustion-powered driving tool Yasuki Ohmori, Tomomasa Nishikawa 2005-05-03