SK

Saburo Koyama

IC Idemitsu Kosan Co.: 7 patents #211 of 1,237Top 20%
Overall (All Time): #749,544 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
7846319 Organic compound hydrogenation apparatus and method for hydrogenating organic compound Fumiaki Takagi, Toshio Fuchigami 2010-12-07
7670474 Method of reducing/regenerating oil or preventing oxidization/degeneration thereof Fumiaki Takagi, Toshio Fuchigami 2010-03-02
6562766 Metal working oil composition Hiroshige Matsuoka, Ryouichi Okuda 2003-05-13
5376186 Heat treating oil composition Hitoshi Uchida, Eiichi Nakamura 1994-12-27
5250122 Heat treating oil composition Hitoshi Uchida, Eiichi Nakamura 1993-10-05
5171903 Lubricating oil composition Seiichi Shido, Kenji Onodera, Shigeo Hara, Yasunori Tomari, Toshio Saito +1 more 1992-12-15
5072067 Lubricating oil composition Seiichi Shido, Kenji Onodera, Shigeo Hara 1991-12-10