Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6689515 | Phase-shifting photomask blank, phase-shifting photomask, method for producing them and apparatus for manufacturing the blank | Nobuyuki Yoshioka, Akihiko Isao, Susumu Kawada, Tsuneo Yamamoto, Jun Amano | 2004-02-10 |
| 6684867 | Ignition apparatus for internal combustion engine and one-chip semiconductor for internal combustion engine igniting | Takashi Ito, Katsuaki Fukatsu, Noboru Sugiura | 2004-02-03 |