Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647894 | Gas separating composite membrane and process for producing the same | Tomomi Ohara, Hisao Hachisuka, Ping Xu, Kenichi Ikeda | 1997-07-15 |
| 5563714 | Digital signal processing apparatus for recording and reproducing time-base compressed digital image data in an image transmission system | Hajime Inoue, Yukio Kubota, Keiji Kanota | 1996-10-08 |
| 5078755 | Method of removing dissolved gas from liquid | Osami Tozawa, Takeshi Sasaki, Akio Iwama | 1992-01-07 |
| 4964887 | Process for separating methane using permeable membrane | Shunichi Shimatani, Michiharu Yamamoto, Akio Iwama | 1990-10-23 |