HF

Hisao Fujikawa

SI Sumitomo Metal Industries: 6 patents #80 of 1,462Top 6%
NS Nippon Stainless Steel: 5 patents #1 of 31Top 4%
AW Air Water: 1 patents #29 of 73Top 40%
DI Daicel Chemical Industries: 1 patents #476 of 893Top 55%
Overall (All Time): #641,492 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
10156008 Method for altering surface of metal, and metallic product Atsushi Miyamoto, Morihiro Fujita 2018-12-18
5385995 Process for the preparation of an alkyl vinyl ether/maleic anhydride copolymer Hideo Katsui, Hiroshi Ogawa 1995-01-31
5160389 Flexible tube for automotive exhaust systems Shunichiro Akiyama 1992-11-03
4950873 Sheath heater Yoshiaki Shida, Nobuyuki Maruyama, Shunichiro Akiyama 1990-08-21
4742324 Sheath heater Yoshiaki Shida, Nobuyuki Maruyama, Shunichiro Akiyama 1988-05-03
4530720 High temperature oxidation resistant austenitic steel Taishi Moroishi, Junichiro Murayama, Yuji Shoji 1985-07-23
4484956 Process for producing heat-resistant ferritic stainless steel sheet Yoshiaki Shida, Masao Koike, Junichiro Murayama, Shunichiro Akiyama 1984-11-27
4201574 Low carbon Ni-Cr austenitic steel having an improved resistance to stress corrosion cracking Masamichi Kowaka 1980-05-06