Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7592234 | Method for forming a nitrogen-containing gate insulating film | Takuo Ohashi | 2009-09-22 |
| 7163871 | Manufacturing method of semiconductor device and oxidization method of semiconductor substrate | Yoshihiro Kitamura, Takuo Ohashi, Susumu Sakurai, Takayuki Kanda, Shinichi Horibe | 2007-01-16 |
| 6300185 | Polyacrystalline silicon film formation method | — | 2001-10-09 |
| 5972750 | Nonvolatile semiconductor memory device and manufacturing method of the same | Hiroki Shirai, Ichiro Honma, Hirohito Watanabe, Haruhiko Ono, Takeshi Okazawa | 1999-10-26 |
| 5973355 | Nonvolatile semiconductor memory device and manufacturing method of the same | Hiroki Shirai, Ichiro Honma, Hirohito Watanabe, Haruhiko Ono, Takeshi Okazawa | 1999-10-26 |
| 5757044 | Electrically erasable and programmable read only memory cell with split floating gate for preventing cell from over-erase | — | 1998-05-26 |
| 5065215 | Semiconductor memory cell and method of manufacturing the same | — | 1991-11-12 |
| 4868137 | Method of making insulated-gate field effect transistor | — | 1989-09-19 |