Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6514538 | External preparations for skin whitening | Naomi Ota, Ohji Ifuku, Hirofumi Aoki, Kenichi Umishio | 2003-02-04 |
| 5225583 | Alkyl-aryl 1,3-propanedione silicone derivative and an external preparation for skin with the derivative compounded therein | Kenichi Umishio, Keiichi Uehara | 1993-07-06 |
| 5219847 | Antipruritic composition | Shigeru Taguchi, Takashi Suzuki, Chikao Nishino, Yoshimori Fujinuma, Chuji Yanagawa +7 more | 1993-06-15 |
| 4322544 | Ultraviolet absorbing agent | Kenichi Tomita, Hakuji Katsura, Masayuki Tejima, Masako Naganuma | 1982-03-30 |