Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4314595 | Method of forming nondefective zone in silicon single crystal wafer by two stage-heat treatment | Kazuhiko Yamamoto, Yoshiaki Matsushita, Kazutoshi Nagasawa, Naotsugu Yoshihiro, Seigo Kishino | 1982-02-09 |