Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11540501 | Bait hooking device | — | 2023-01-03 |
| 6039620 | Method of manufacturing vacuum hermetic vessels | Shigeo Itoh, Yoshio Makita, Takeshi Tonegawa, Yoshihiko Hirata | 2000-03-21 |
| 5827048 | Getter support | Takeshi Tonegawa, Gentaro Tanaka, Shigeo Itoh, Yuuichi Kogure | 1998-10-27 |
| 5820434 | Vacuum airtight envelope and method for manufacturing same | Shigeo Itoh, Tatsuo Yamaura, Teruo Watanabe, Yoshio Makita | 1998-10-13 |
| 5693111 | Method for sealedly forming envelope | Shigeo Itoh, Youich Kogure, Takeshi Tonegawa | 1997-12-02 |
| 5499939 | Evacuation apparatus | Shigeo Itoh, Mikio Yokoyama, Takeshi Tonegawa | 1996-03-19 |