Issued Patents All Time
Showing 25 most recent of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6825294 | Catalysts for polymerizing styrene and other monomer and process for producing styrene polymer | Nobuhiro Yabunouchi | 2004-11-30 |
| 6815396 | Adsorbents made of styrene polymers | Yoshiharu Tsujita | 2004-11-09 |
| 6696525 | Process for producing polymer composition | — | 2004-02-24 |
| 6277934 | Organic aluminoxy compound and catalyst for producing polymer | Tsuyoshi Kondoh, Shoji Naganuma | 2001-08-21 |
| RE37064 | Process for producing styrenic polymer | Yoshiaki Aoyama | 2001-02-20 |
| 6100352 | Process for producing polymer | Hajime Shouzaki | 2000-08-08 |
| 6075102 | Polymerization catalyst and process for producing polymers | Yoshiaki Aoyama | 2000-06-13 |
| 6034191 | Organic aluminoxy compound and catalyst for producing polymer | Tsuyoshi Kondoh, Shoji Naganuma | 2000-03-07 |
| 5917073 | Organic aluminoxy compound and catalyst for producing polymer | Tsuyoshi Kondoh, Shoji Naganuma | 1999-06-29 |
| 5905126 | Process and catalyst for producing styrenic polymer | Mizutomo Takeuchi | 1999-05-18 |
| 5858904 | Catalyst for production of vinyl-based polymer and process for production of vinyl-based aromatic polymer | Mizutomo Takeuchi, Hajime Shouzaki | 1999-01-12 |
| 5824753 | Process for producing a styrenic polymer | Shoji Naganuma | 1998-10-20 |
| 5807940 | Catalyst for polymerization and process for producing a styrenic polymer by using the catalyst | Yoshiaki Aoyama | 1998-09-15 |
| 5786433 | Process for producing styrenic polymer | Mizutomo Takeuchi | 1998-07-28 |
| 5756612 | Process for producing styrenic polymer | Yoshiaki Aoyama | 1998-05-26 |
| 5747613 | Process for producing aromatic vinyl compound-based copolymer | Mizutomo Takeuchi, Hajime Shouzaki | 1998-05-05 |
| 5747614 | Catalyst for producing sytrenic polymer and process for producing sytrenic polymer by using same | Mizutomo Takeuchi, Hajime Shouzaki | 1998-05-05 |
| 5739227 | Process for controlling molecular weight of a styrenic polymer | Hideo Teshima | 1998-04-14 |
| 5670587 | Catalyst for producing aromatic vinyl compound-based polymer composition and process for producing aromatic vinyl compound-based polymer composition using same | Mizutomo Takeuchi, Hajime Shouzaki, Masahiko Kuramoto | 1997-09-23 |
| 5623034 | Process for producing styrenic polymer | Yoshiaki Aoyama | 1997-04-22 |
| 5600005 | Process for producing tetrakisflorophenylborate | Shoji Naganuma, Masami Watanabe | 1997-02-04 |
| 5596055 | Process for producing styrenic polymer | Yoshiaki Aoyama | 1997-01-21 |
| 5543481 | Process for producing a styrenic polymer | Mizutomo Takeuchi | 1996-08-06 |
| 5461128 | Process for producing a styrenic polymer | Mizutomo Takeuchi | 1995-10-24 |
| 5451648 | Process for producing styrenic polymer | Satoshi Ikeuchi | 1995-09-19 |