RH

Ryo Hiraga

HI Hitachi: 17 patents #2,231 of 28,497Top 8%
HC Hitachi Instruments Engineering Co.: 1 patents #18 of 126Top 15%
TW The Japan Steel Works: 1 patents #307 of 643Top 50%
Overall (All Time): #279,920 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
6574966 Gas turbine for power generation Kishio Hidaka, Shigeyoshi Nakamura, Yutaka Fukui, Masao Shiga, Hajime Toriya +1 more 2003-06-10
6546713 Gas turbine for power generation, and combined power generation system Kishio Hidaka, Shigeyoshi Nakamura, Yutaka Fukui, Masao Shiga, Hajime Toriya +1 more 2003-04-15
6419453 Steam turbine rotor shaft Yutaka Fukui, Hiroyuki Doi, Masahiko Arai, Kenichiro Nomura, Toshio Fujita +1 more 2002-07-16
6248969 Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode used therefor Katsuhiro Komuro, Yoshitaka Kojima, Noboru Baba, Toru Tanimizu, Yoshimi Hakamata +3 more 2001-06-19
6182439 High and low pressure sides-integrating system turbine, long blades thereof and combined cycle power generation system Masao Siga, Takeshi Onoda, Shigeyoshi Nakamura 2001-02-06
6174132 Steam-turbine power plant and steam turbine Masao Shiga, Takeshi Onoda, Nobuo Shimizu, Norio Yamada, Mitsuo Kuriyama +4 more 2001-01-16
6123504 Steam-turbine power plant and steam turbine Masao Shiga, Takeshi Onoda, Nobuo Shimizu, Norio Yamada, Mitsuo Kuriyama +4 more 2000-09-26
6074169 High and low pressure sides-integrating steam turbine, long blades thereof and combined cycle power generation system Masao Siga, Takeshi Onoda, Shigeyoshi Nakamura 2000-06-13
5964091 Gas turbine combustor and gas turbine Yutaka Fukui, Tetsuo Kashimura, Hideyo Kodama, Hiroyuki Doi 1999-10-12
5961284 High strength heat resisting cast steel, steam turbine casing, steam turbine power plant and steam turbine Mitsuo Kuriyama, Masao Shiga, Kishio Hidaka, Shigeyoshi Nakamura, Yutaka Fukui +2 more 1999-10-05
5898177 Electron microscope Kishio Hidaka, Takeo Kamino, Toshie Yaguchi, Katsuhisa Usami, Takashi Aoyama +2 more 1999-04-27
5749228 Steam-turbine power plant and steam turbine Masao Shiga, Takeshi Onoda, Nobuo Shimizu, Norio Yamada, Mitsuo Kuriyama +4 more 1998-05-12
5008072 Heat resistant steel and gas turbine components composed of the same Masao Siga, Yutaka Fukui, Mitsuo Kuriyama, Soichi Kurosawa, Katsumi Iijima +4 more 1991-04-16
4933228 Thermosetting resin and prepreg and laminate using the same Junichi Katagiri, Akira Nagai, Keiko Tawara, Akio Takahashi, Motoyo Wajima +1 more 1990-06-12
4912544 Corrosion-resistant aluminum electronic material Jin Onuki, Masateru Suwa, Masahiro Koizumi, Osamu Asai, Katsumi Suzuki 1990-03-27
4886858 Thermosetting resin and prepreg and laminate using the same Junichi Katagiri, Akira Nagai, Keiko Tawara, Akio Takahashi, Motoyo Wajima +1 more 1989-12-12
4850187 Gas turbine having components composed of heat resistant steel Masao Siga, Yutaka Fukui, Mitsuo Kuriyama, Soichi Kurosawa, Katsumi Iijima +4 more 1989-07-25