Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893055 | Process for using unsaturated polyester resin composition for treating cathode-ray tubes and cathode tubes obtained thereby | Hirohumi Izumi, Etsuji Iwami, Kazuyuki Tanaka | 1990-01-09 |
| 4370446 | Method for manufacture of polybutadiene-modified unsaturated polyester | Tsutomu Toyoda, Iwao Maekawa, Hirobumi Izumi | 1983-01-25 |