Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7291807 | TIG welding equipment and TIG welding method | Kaoru Kitamura, Naoji Yamaoka, Shigeru Tanimizu, Hirofumi Morita | 2007-11-06 |
| 4416458 | Mechanical face seal with minute pores in sliding surface | Akira Takenaka, Yasumitsu Kuwazuru | 1983-11-22 |