HU

Hajime Umehara

HI Hitachi: 12 patents #3,472 of 28,497Top 15%
HC Hitachi Engineering Co.: 1 patents #187 of 572Top 35%
HC Hitachi Nuclear Engineering Co.: 1 patents #3 of 32Top 10%
Overall (All Time): #428,909 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
5663502 Method and apparatus for measuring thickness of layer using acoustic waves Yoshiaki Nagashima, Kenichi Fujiwara, Masao Sato, Fuminobu Takahashi, Masahiro Koike +1 more 1997-09-02
5640435 Fuel assembly and nuclear reactor Hideki Kurosaki, Junjiro Nakajima, Shozo Nakamura, Satoshi Kanno, Koji Nishida +4 more 1997-06-17
5617456 Fuel assembly and nuclear reactor Hideki Kurosaki, Junjiro Nakajima, Shozo Nakamura, Satoshi Kanno, Koji Nishida +4 more 1997-04-01
5388132 Nuclear fuel assembly and core Motoo Aoyama, Yasunori Bessho, Junichi Yamashita, Katsumasa Haikawa, Osamu Yokomizo +2 more 1995-02-07
5265139 Fuel assembly Yoshihiko Yanagi, Junjiro Nakajima, Kenji Kanamori, Yasuhiro Aizawa, Toraki Sakuma +2 more 1993-11-23
5128098 Fuel assembly Shozo Nakamura, Tadashi Mizuno, Junjiro Nakajima, Yoshihiko Yanagi, Tetsuo Yasuda +4 more 1992-07-07
4985199 Fuel spacer of separate cell type and manufacturing method therefor Makoto Irube, Junjiro Nakajima, Nobuo Tada, Masayoshi Ajima 1991-01-15
4842814 Nuclear reactor fuel assembly Iwao Takase, Masahisa Inagaki, Masayoshi Kanno, Toshimi Yoshida, Jiro Kuniya +3 more 1989-06-27
4766658 Method of producing composite nuclear fuel cladding Toshihiro Matsumoto, Junjiro Nakajima, Norihisa Fujii 1988-08-30
4689091 Process for producing zirconium-based alloy Toshimi Yoshida, Hideo Maki, Tetsuo Yasuda, Isao Masaoka, Iwao Takase +3 more 1987-08-25
4678521 Process for producing zirconium-based alloy and the product thereof Toshimi Yoshida, Hideo Maki, Tetsuo Yasuda, Isao Masaoka, Iwao Takase +3 more 1987-07-07
4627148 Method of producing high-purity metal member Hiromichi Imahashi, Masahisa Inagaki, Kimihiko Akahori 1986-12-09