Issued Patents All Time
Showing 1–6 of 6 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 |
| 5531885 | Hydroconversion process for heavy hydrocarbon oil | Yoshihiro Mizutani, Takeshi Tomino, Yasuo Yamamoto, Yukio Shibata | 1996-07-02 |
| 5002919 | Catalyst composition for hydrogenation of heavy hydrocarbon oil and process for producing the catalyst | Takeshi Tomino, Kazushi Usui, Tomohiro Yoshinari, Takuo Suzuki | 1991-03-26 |
| 4517349 | Process for the production of p-vinyl phenol polymer | Hiroshi Fujiwara, Kazuo Ozawa | 1985-05-14 |
| 4503271 | Process for the production of para-vinyl phenol by dehydrogenation of para-ethyl phenol | Hiroshi Fujiwara, Kazuo Ozawa | 1985-03-05 |
| 4189603 | Process for producing high-quality terephthalic acid suitable for use in direct polymerization | Motoo Shigeyasu, Takehiko Kitamura | 1980-02-19 |