Application of Guenther K. Hoeschele

ALMOND, Judge.

This is an appeal from the decision of the Patent Office Board of Appeals affirming the final rejection of claims 1, 3, 4 and 5, 1 *****the sole claims of appellant’s application. 2

The invention relates to polyurethane elastomers said to have improved freeze-resistant properties. It is said that polyurethane elastomers prepared from poly-tetramethylene ether glycol (hereinafter PTME glycol) or polypropylene ether glycol (hereinafter PPE glycol) are unsatisfactory for many applications on industrial equipment which may be subjected to extremely low temperature, as in winter…