Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6013530 | Process for determination of sulfur content | — | 2000-01-11 |
| 4981832 | Catalyst composition for hydrogenation of heavy hydrocarbon oil and process for producing the catalyst | Kazuyoshi Kudoh, Kazushi Usui, Tomohiro Yoshinari, Shigenori Nakashizu | 1991-01-01 |
| 4732886 | Hydrogen treating catalyst for hydrodesulfurization-cracking of mineral oil | Takeshi Tomino, Mitsugu Yumoto | 1988-03-22 |
| 4585748 | Crystalline catalyst compositions for the conversion of hydrocarbons | Kazushi Usui | 1986-04-29 |
| 4368337 | Process for converting glycol dialkyl ether | Hiroki Kamiyama, Shigenori Nakashizu, Takashi Kaneko, Tadahiro Wakui, Tadashi Matsumoto | 1983-01-11 |