Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12370466 | Method of purification and purified products | Masashi Katayama | 2025-07-29 |
| 12258537 | Composition containing highly unsaturated fatty acid or alkyl ester thereof and a method for producing the same | Nobushige Doisaki, Hideaki Yamaguchi | 2025-03-25 |
| 12194393 | Method of purification and purified products | Masashi Katayama | 2025-01-14 |
| 11898120 | Composition containing highly unsaturated fatty acid or alkyl ester thereof and a method for producing the same | Nobushige Doisaki, Hideaki Yamaguchi | 2024-02-13 |
| 11840714 | Enriching DHA in glyceride fractions | Yuuji Hirouchi, Isao Yamazaki, Natsuko Watanabe | 2023-12-12 |
| 11499119 | Composition containing highly unsaturated fatty acid or alkyl ester thereof and a method for producing the same | Nobushige Doisaki, Hideaki Yamaguchi | 2022-11-15 |
| 11248190 | Composition containing highly unsaturated fatty acid or alkyl ester thereof and a method for producing the same | Nobushige Doisaki, Hideaki Yamaguchi | 2022-02-15 |
| 10696924 | Composition containing highly unsaturated fatty acid or alkyl ester thereof and a method for producing the same | Nobushige Doisaki, Hideaki Yamaguchi | 2020-06-30 |
| 9556401 | Method for producing EPA-enriched oil and DHA-enriched oil | Hiroyuki Kawahara, Hideaki Yamaguchi, Hideo Ikemoto, Nobushige Doisaki | 2017-01-31 |
| 9150817 | Process for preparing concentrated polyunsaturated fatty acid oil | Hiroyuki Kawahara, Nobushige Doisaki | 2015-10-06 |
| 6905850 | Process for the production of glycerides with lipases | Roxana Irimescu, Kazuhiko Hata, Tsuneo Yamane | 2005-06-14 |
| 6117905 | Edible oil containing arachidonic acid and foods containing the same | Kenichi Higashiyama, Kengo Akimoto, Sakayu Shimizu, Nobushige Doisaki | 2000-09-12 |
| 5840944 | Method to produce highly pure eicosapentaenoic acid or its ester | Kazuhiko Hata | 1998-11-24 |