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Osamu Hirai

HC Hitachi Chemical Company: 8 patents #199 of 1,946Top 15%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
KK Kirin Beer Kabushiki Kaisha: 1 patents #149 of 379Top 40%
Overall (All Time): #470,115 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
7273652 Hollow carbon fiber and production method Shinji Takeda, Noriyuki Taguchi, Kazumi Kokaji 2007-09-25
6743500 Hollow carbon fiber and production method Shinji Takeda, Noriyuki Taguchi, Kazumi Kokaji 2004-06-01
6641792 Hollow carbon fiber and production method Shinji Takeda, Noriyuki Taguchi, Kazumi Kokaji 2003-11-04
5547329 Roller bottle handling system Keiji Tamura, Hajime Ichihashi 1996-08-20
5540857 Purification of liquid crystals and liquid crystal composition Noriji Tashiro, Osamu Watanabe, Hiroshi Nishizawa, Kenji Suzuki 1996-07-30
5422034 Purification of liquid crystals and liquid crystal composition Noriji Tashiro, Osamu Watanabe, Hiroshi Nishizawa, Kenji Suzuki 1995-06-06
4949209 Thin-film magnetic head having special input/output terminal backing connection and method of fabricating the same Tadashi Imanaka, Tetsuo Kobayashi, Harunobu Saito, Kanji Kawakami 1990-08-14
4550353 Thin-film magnetic head and method for fabricating the same Tetsuo Kobayashi, Shunichiro Kuwatsuka, Saburo Suzuki 1985-10-29
4505818 Liquid chromatographic column packing material Yoshiyuki Mukoyama, Tetsuya Aoyama 1985-03-19
4486308 Column packing material and production thereof Tetsuya Aoyama, Yoshiyuki Mukoyama 1984-12-04
4427822 Process for producing particulate polymer having imide groups Hiroshi Nishizawa, Yoshiyuki Mukoyama 1984-01-24