Issued Patents All Time
Showing 51–62 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5998819 | Thin ferroelectric film element having a multi-layered thin ferroelectric film and method for manufacturing the same | Seiichi Yokoyama, Maho Ushikubo, Masayoshi Koba | 1999-12-07 |
| 5851841 | Method for producing ferroelectric film element, and ferroelectric film element and ferroelectric memory element produced by the method | Maho Ushikubo, Seiichi Yokoyama, Hironori Matsunaga, Masayoshi Koba | 1998-12-22 |
| 5831299 | Thin ferroelectric film element having a multi-layered thin ferroelectric film and method for manufacturing the same | Seiichi Yokoyama, Maho Ushikubo, Masayoshi Koba | 1998-11-03 |
| 5515984 | Method for etching PT film | Seiichi Yokoyama, Shigeo Onishi, Jun Kudo, Keizo Sakiyama | 1996-05-14 |
| 5315402 | Video signal recording/reproducing system for increasing recording density of a frequency modulated signal | Takeshi Kawabe, Yukio Tojo, Takeo Takase | 1994-05-24 |
| 5187409 | Gyrotron having a quasi-optical mode converter | — | 1993-02-16 |
| D317644 | Combined pressure regulator filter and lubricator | Tatsuaki Aoyama, Hisanobu Niwa | 1991-06-18 |
| D317346 | Filter | Tatsuaki Aoyama, Hisanobu Niwa | 1991-06-04 |
| 4839561 | Gyrotron device | — | 1989-06-13 |
| 4641031 | Ion source apparatus | Toru Sugawara | 1987-02-03 |
| 4636688 | Gyrotron device | — | 1987-01-13 |
| 4506160 | Ion source apparatus | Toru Sugawara | 1985-03-19 |