Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5104544 | Refining of a rare earth including a process for separation by a reverse osmosis membrane | Hiroshi Shimizu, Yoshiyasu Kamiyama | 1992-04-14 |
| 5012622 | Structural filler filled steel tube column | Takanori Sato, Yasushi Watanabe, Seiho Kitagawa, Hideyo Shiokawa, Tomoo Shokawa +7 more | 1991-05-07 |
| 4818387 | Sulfonated polysulfone composite semipermeable membranes and process for producing the same | Shouichi Yamamoto, Hiroki Ito | 1989-04-04 |
| 4810076 | Selective shading device and an optical device using the same | Tsugio Murao, Yoshiharu Yamamoto, Yoshitomi Nagaoka, Yasuo Nakajima | 1989-03-07 |
| 4468195 | Thermal treatment apparatus | Tamotsu Sasaki, Tetsuya Takagaki | 1984-08-28 |