Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6861534 | Process for producing 1,3-dialkyl-2-imidazolidinone compound | Katsuhiko Matsuba, Takazou Katou, Hiroyoshi Watanabe, Takashi Ohkawa, Masato Yamazaki +1 more | 2005-03-01 |
| 6737548 | Process for preparing 1,5-diaminonaphthalene derivative | Yoshio Motoyama | 2004-05-18 |
| 6162948 | Naphthalenedicarboxylic acid particles and process for the production thereof | Hiroshi Iwasaki | 2000-12-19 |
| 6100374 | Method of purifying crude naphthalenedicarboxlic acid and process for preparing polyethylene naphthalate | Hiroshi Iwasaki, Hiromi Ueki | 2000-08-08 |
| 5872284 | Method for purifying crude naphthalenedicarboxylic acid | Hiroshi Iwasaki, Nobuya Hirokane, Masayasu Ishibashi | 1999-02-16 |
| 5811513 | Process for producing polyethylene naphthalate | Hiroshi Iwasaki, Masayasu Ishibashi, Hiromi Ueki, Shoji Hiraoka, Toru Matsuyoshi | 1998-09-22 |
| 5760156 | Manufacturing method for polycarbonate | Yoshio Motoyama, Hideto Matsuoka, Hajime Oyoshi, Michio Tanaka, Tomoaki Shimoda +2 more | 1998-06-02 |
| 5510511 | Process for preparing N,O-dialkylhydroxylamine, its salts or intermediates in their synthesis | Mitsuyuki Takesue, Isao Hashimoto, Noriaki Kihara, Kiyoaki Sugi | 1996-04-23 |
| 4933507 | Method of dehydrogenating cyclohexenone | Yasushi Nakashima, Fujihisa Matsunaga | 1990-06-12 |