Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702782 | Two layer extrusion molding | Shinichi Goto, Yasuhisa Kuzuya, Hidehito Ichikawa | 1997-12-30 |
| 5677971 | Optical wavelength filter with reduced sidelobes and simple design | Hideaki Okayama | 1997-10-14 |
| 5603961 | Sustained release multi-core microsphere preparation and method for producing the same | Takehiko Suzuki, Yukiko Nishioka, Yasuhisa Matsukawa, Akihiro Matsumoto | 1997-02-18 |