Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5504243 | Method for inhibiting polymerization of (meth) acrylic acid and esters thereof | Kazuhiko Sakamoto, Takahiro Takeda, Masatoshi Ueoka, Yoji Akazawa | 1996-04-02 |
| 5371280 | Polymerization inhibitor and inhibiting method for vinyl compound | Hidefumi Haramaki, Kazuhiko Sakamoto, Masatoshi Ueoka, Yohji Akazawa | 1994-12-06 |
| 5322960 | Method for inhibiting polymerization of (meth) acrylic acid and esters thereof | Kazuhiko Sakamoto, Takahiro Takeda, Masatoshi Ueoka, Yoji Akazawa | 1994-06-21 |
| 5315037 | Process for purification of acrylic acid | Kazuhiko Sakamoto, Hiroaki Tanaka, Masatoshi Ueoka, Yoji Akazawa | 1994-05-24 |
| 5288790 | Method for producing spherical fine particles of colored resin | Saburo Nakahara, Yasuhiro Yamamoto, Yohji Akazawa, Yoshikuni Mori | 1994-02-22 |
| 5248819 | Process for recovering methacrolein | Syoichi Matsumoto, Masatoshi Ueoka, Yosuke Ogata, Hiroshi Yoshida | 1993-09-28 |
| 5045233 | Method for inhibiting polymerization of maleimides | Yuichi Kita, Kentaro Sakamoto, Tomoaki Tobo | 1991-09-03 |
| 4956493 | Process for producing methacrylic ester | Masatoshi Ueoka, Syoichi Matsumoto, Hiroshi Yoshida | 1990-09-11 |
| 4851547 | Method for production of maleimides | Yuichi Kita, Koichi Nakagawa, Kentaro Sakamoto, Akio Fukui, Yoichi Nakagawa | 1989-07-25 |
| 4786738 | Method for production of maleimides | Yuichi Kita, Kentaro Sakamoto, Atsushi Okubo | 1988-11-22 |
| 4780546 | Method for production of N-phenyl and N-cyclohexyl maleimides | Yuichi Kita, Kentaro Sakamoto, Atsushi Okubo | 1988-10-25 |
| 4623734 | Method for production of maleimides | Yuichi Kita, Kentaro Sakamoto, Atsushi Okubo | 1986-11-18 |
| 4464229 | Process for producing acrylic or methacrylic esters | Takahisa Sato, Sumio Nakashima | 1984-08-07 |
| 4317926 | Process for preparing and recovering acrylic acid | Takahisa Sato, Michito Okane | 1982-03-02 |