Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790294 | Spring with excellent fatigue endurance property and surface treatment method for producing the spring | Masaaki Ishida, Yuji Isono, Keiichiro Teratoko, Yoshiro Yamada, Hiroshi Suzuki +1 more | 2004-09-14 |
| 5816088 | Surface treatment method for a steel workpiece using high speed shot peening | Yoshiro Yamada, Masaaki Ishida | 1998-10-06 |