Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4292417 | Semipermeable membrane | Ryoshu Suzuki, Zenjiro Honda, Hitoshi Tsugaya | 1981-09-29 |
| 4279846 | Process for preparing semipermeable membrane having selective permeability | Zenjiro Honda, Hitoshi Tsugaya | 1981-07-21 |
| 4274384 | Engine exhaust gas recirculation system | Keiichi Osawa, Hiroyuki Nishimura | 1981-06-23 |
| 4249490 | Exhaust gas recirculation for engine | Toshio Shioya, Hiroyuki Nishimura | 1981-02-10 |
| 4249504 | Unitary assembly for control of EGR apparatus for engine | Toshio Shioya, Hiroyuki Nishimura | 1981-02-10 |
| 4235208 | Exhaust gas recirculation regulating system | Toshio Shioya | 1980-11-25 |
| 4200726 | Semipermeable membrane of phenoxy resin containing sulfuric acid groups or salts thereof | Ryoshu Suzuki, Zenjiro Honda, Hitoshi Tsugaya | 1980-04-29 |