Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6063265 | Process for producing hydrodesulfurization catalyst and hydrodesulfurizing gas oil therewith | Osamu Chiyoda, Kazushi Usui, Mitsugu Yumoto, Kazuo Idei, Etsuo Suzuki +3 more | 2000-05-16 |
| 5248412 | Process for producing catalyst composition for use in hydrodesulfurization of hydrocarbon oil and process for hydrodesulfurizing hydrocarbon oil | Takashi Fujikawa, Kazushi Usui | 1993-09-28 |
| 5244858 | Catalyst composition for hydrodesulfurization of hydrocarbon oil and process for producing the same | Kazushi Usui, Takashi Fujikawa | 1993-09-14 |
| 5182250 | Catalyst composition for hydrodesulfurization of hydrocarbon oil and process for producing the same | Kazushi Usui, Takashi Fujikawa | 1993-01-26 |
| 5137859 | Process for producing catalyst composition for use in hydrodesulfurization of hydrocarbon oil | Takashi Fujikawa, Kazushi Usui | 1992-08-11 |