TO

Tetsunobu Okamura

HI Hitachi: 3 patents #10,712 of 28,497Top 40%
HA Hitachi Appliances: 1 patents #56 of 109Top 55%
📍 Tochigi, JP: #853 of 2,789 inventorsTop 35%
Overall (All Time): #1,255,362 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7234646 Heat pump hot-water supply system Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa 2007-06-26
6874694 Heat pump hot-water supply system Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa 2005-04-05
6837443 Heat pump hot-water supply system Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa 2005-01-04
5197293 Method of controlling an air conditioning apparatus and air conditioning apparatus using the method Kiyoshi Nagasawa, Kuniyuki Yamada 1993-03-30