Issued Patents All Time
Showing 601–603 of 603 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4194302 | Answer-spotting electric instrument | — | 1980-03-25 |
| 4189540 | Process for producing cation exchange membrane by impregnating a diene monomer having carboxylic acid groups into a fluorinated membrane having cation exchange groups and polymerizing | Toru Seita, Shunichi Asami, Akihiko Shimizu | 1980-02-19 |
| 4188264 | Process for determining bacterial endotoxin and reagents used therefor | Sadaaki Iwanaga, Takashi Morita, Shin Nakamura, Makoto NIWA | 1980-02-12 |