Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5241103 | Process for producing 1,4-dihydroxy-2-arylnaphthoate | Yasuhiro Nishida | 1993-08-31 |
| 5162570 | Process for producing 1,4-dihydroxy-2-arylnaphthoate | Yasuhiro Nishida | 1992-11-10 |
| 5049604 | Process for producing piperidine derivative and stabilized resin composition containing said derivative | Takeo Fujii, Tamaki Ishii, Shinichi Yachigo, Tatsuo Kaneoya, Yukoh Takahashi +2 more | 1991-09-17 |
| 5012015 | Process for producing 2,4-dichloro-3-alkyl-6-nitrophenol | Masanobu Terao, Yasuyoshi Ueda, Kiyoyasu Hashimoto, Takashi Omura | 1991-04-30 |
| 4725634 | Stabilizer for synthetic resins | Tamaki Ishii, Shinichi Yachigo, Haruki Okamura, Eizo Okino, Yukoh Takahashi +1 more | 1988-02-16 |
| 4719037 | Piperidine derivatives, production process therefor, and stabilizers for organic substances containing said derivatives as an active component | Yukoh Takahashi, Hiroki Yamamoto, Tatsuo Kaneoya, Haruki Okamura, Shinichi Yachigo +1 more | 1988-01-12 |
| 4695407 | Method for purifying 1-aminoanthraquinone | Norio Kotera, Masatoshi Uegaki, Masakatsu Yoshimura, Shinzaburo Masaki, Tatsuo Kaneoya +2 more | 1987-09-22 |
| 4670488 | Piperidine derivatives, their production and use as stabilizers | Yukoh Takahashi, Eizo Okino, Tatsuo Kaneoya, Haruki Okamura, Shinichi Yachigo +1 more | 1987-06-02 |
| 4670489 | Piperidine derivatives, their production and use as stabilizers | Yukoh Takahashi, Tatsuo Kaneoya, Eizo Okino, Haruki Okamura, Shinichi Yachigo +1 more | 1987-06-02 |
| 4323431 | Purification of compounds having high melting point | Masatoshi Takahashi, Norio Kotera, Masatoshi Uegaki, Takashi Miyaoka | 1982-04-06 |
| 4297508 | Process for producing 2 hydroxy-naphthalene-3-carboxylic acid | Fujio Masuko, Makoto Nakamura | 1981-10-27 |