Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5504243 | Method for inhibiting polymerization of (meth) acrylic acid and esters thereof | Kazuhiko Sakamoto, Takahiro Takeda, Masatoshi Ueoka, Masao Baba | 1996-04-02 |
| 5322960 | Method for inhibiting polymerization of (meth) acrylic acid and esters thereof | Kazuhiko Sakamoto, Takahiro Takeda, Masatoshi Ueoka, Masao Baba | 1994-06-21 |
| 5315037 | Process for purification of acrylic acid | Kazuhiko Sakamoto, Hiroaki Tanaka, Masatoshi Ueoka, Masao Baba | 1994-05-24 |
| 4665200 | Method for preparing pyromellitic acid and/or pyromellitic anhydride | Yoshiyuki Nakanishi, Ikuo Kurimoto, Youjirou Takahashi, Shinichi Uchida, Hisashi Yoshikawa | 1987-05-12 |
| 4356112 | Catalyst for production of phthalic anhydride | Yoshiyuki Nakanishi, Noriaki Ikeda, Takehiko Suzuki | 1982-10-26 |