Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5032561 | Catalyst composition for cracking non-aromatic hydrocarbons and isomerizing C8-aromatic hydrocarbons | by Mieko Onodera, legal representative, by Shiyou Onodera, legal representative, by Toru Onodera, legal representative | 1991-07-16 |
| 4954326 | Preparation of crystalline aluminosilicate zeolite, and its product | Tokuji Sakai, Yasuo Yamasaki, Koji Sumitani | 1990-09-04 |
| 4902843 | Process for producing M-xylene from O-xylene | Akio Namatame | 1990-02-20 |
| 4700012 | Process for isomerizing xylene | Akio Namatame, Kimihiko Sato, Koji Sumitani | 1987-10-13 |
| 4695667 | Novel crystalline aluminosilicate zeolites and process for production thereof | Koji Sumitani, Tokuji Sakai, Yasuo Yamasaki | 1987-09-22 |
| 4557919 | Production of crystalline zeolites | Koji Sumitani, Tokuji Sakai, Yasuo Yamasaki | 1985-12-10 |
| 4524055 | Crystalline aluminosilicate zeolite and process for production thereof | Tokuji Sakai, Yasuo Yamasaki, Koji Sumitani | 1985-06-18 |
| 4485185 | Catalyst composition | Tokuji Sakai, Yasuo Yamasaki, Koji Sumitani | 1984-11-27 |
| 4377718 | Process for producing p-xylene | Kimihiko Sato, Tokuji Sakai, Yasuo Yamasaki, Koji Sumitani | 1983-03-22 |
| 4331822 | Isomerization of xylene | Tokuji Sakai, Yasuo Yamasaki, Koji Sumitani | 1982-05-25 |
| 4320242 | Process for selective dealkylation of alkyl-substituted aromatic hydrocarbons | Tokuji Sakai, Yasuo Yamasaki, Koji Sumitani, Minekazu Sueoka | 1982-03-16 |
| 4300014 | Process for isomerization of xylene | Yasuo Yamasaki, Tokuji Sakai, Kiji Sumitani | 1981-11-10 |