Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681448 | Electrochemical process and system for etching semiconductor substrates | Makoto Uchiyama, Yasukazu Iwasaki | 1997-10-28 |
| 5613020 | Optical devices having a periodical current restraint layer and optical communication systems using the optical device | Mamoru Uchida | 1997-03-18 |