Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5298813 | Polar leapfrog filter | Hiroshi Tanigawa, Isao Fukai, Hiroshi Kondo | 1994-03-29 |
| 5296763 | Polar leapfrog filter | Hiroshi Tanigawa, Hiroshi Kondo, Isao Fukai | 1994-03-22 |
| 5293086 | Polar leapfrog filter | Hiroshi Tanigawa, Hiroshi Kondo, Isao Fukai | 1994-03-08 |