Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4312973 | Polyurethane elastomers prepared from polyol or polymer/polyol-chain extender mixtures | Frank E. Critchfield, Richard M. Gerkin | 1982-01-26 |
| 4226756 | Mixtures of extenders and polyols or polymer/polyols useful in polyurethane production | Frank E. Critchfield, Richard M. Gerkin | 1980-10-07 |