Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6818342 | Method of forming protective coating on cell safety valve element, cell safety valve element coated with protective film, cell sealing plate using the element, and enclosed cell using the plate | Hiroaki Okamoto, Yoshiyuki Sugimoto, Hiroaki Kawamura | 2004-11-16 |
| 6737187 | Closed battery | Akiyoshi Takada, Kazuo Yoshida, Nobuyuki Yoshimoto, Yoshihiko Isobe | 2004-05-18 |
| 6730391 | Clad board for printed-circuit board, multilayered printed-circuit board, and method of manufacture thereof | Shinji Ohsawa, Kazuo Yoshida | 2004-05-04 |
| 6689482 | Method of manufacturing metal foil/ceramics joining material and metal foil laminated ceramic substrate | Shinji Ohsawa, Kazuo Yoshida | 2004-02-10 |