Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827636 | Semiconductor device production method and apparatus | — | 2004-12-07 |
| 6823859 | Flat heating surface type gas stove | Kiyoshi Nakayama | 2004-11-30 |
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Yutaka Yamada
Tokyo Gas Co.: 1 patents #1 of 21Top 5%
Overall (2004): #32,849 of 270,089Top 15%
2
Patents 2004