Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9732278 | Petroleum coke and production method for same | Hiroshi Kawachi, Toshitaka Fujii, Takashi Oyama | 2017-08-15 |
| 8617508 | Carbon material for negative electrode of lithium secondary battery and method for producing the same | Takashi Suzuki, Akio Sakamoto, Tamotsu Tano, Takashi Oyama | 2013-12-31 |
| 8226921 | Raw coke for electricity storage carbon material and needle coke | Takashi Oyama, Tamotsu Tano, Keiji Higashi, Ippei Fujinaga, Hiromitsu Hashisaka +7 more | 2012-07-24 |
| 8197788 | Raw coke for electricity storage carbon material and needle coke | Takashi Oyama, Tamotsu Tano, Keiji Higashi, Ippei Fujinaga, Hiromitsu Hashisaka +7 more | 2012-06-12 |
| 8137530 | Process for producing petroleum coke | Tamotsu Tano, Takashi Oyama, Toshiyuki Oda, Keiji Higashi | 2012-03-20 |
| 7964173 | Feedstock composition and raw coke for electricity storage carbon material and needle coke | Takashi Oyama, Tamotsu Tano, Keiji Higashi, Ippei Fujinaga, Hiromitsu Hashisaka +3 more | 2011-06-21 |
| 7959888 | Raw coke for electricity storage carbon material and needle coke | Takashi Oyama, Tamotsu Tano, Keiji Higashi, Ippei Fujinaga, Hiromitsu Hashisaka +7 more | 2011-06-14 |
| 5883036 | Olefin oligomerization catalyst, process for preparing the same, and olefin oligomerization process using the same | Hirokazu Fujie, Kozo Imura, Hideyuki Matsumoto, Takayuki Noh | 1999-03-16 |