Court Opinion

ID: 9452742
Source: CourtListenerOpinion
Date Created: 2023-08-04 17:50:43.647265+00
Date Added: 2024-06-11T17:33:20.558102
License: Public Domain

SMITH, Judge
(dissenting).
Appellants’ brief states:
This invention is based on the discovery that material extracted from quebracho wood with water or with aqueous alkali solutions of hydroxides and carbonates of sodium, potassium and ammonia, can be incorporated in the resorcinol-formaldehyde adhesive base solution to thereby displace from one-third to two-thirds of the relatively expensive resorcinol.
In other words, appellants’ contribution to the art is their discovery that extracts of quebracho wood can be used to replace one-third to two-thirds of the costly resorcinol component of a conventional cold-setting resorcinolformaldehyde resin and yet not adversely affect the “pot life”, “cure-time”, “spreadability”, “strength”, and “water-resistance” of the adhesive mixture. Appellants’ further contribution is that the addition of this quebracho extract to a conventional resorcinol-formaldehyde condensation *610base lessens the need for careful control of the viscosity of the adhesive base so as not to unduly increase the “pot life” of the adhesive.

*609
ti

*610I do not find the majority opinion to be convincing on this issue. Appellants’ invention appears to me to contribute the foregoing advance in this art and I do not find it to be obvious in view of the prior art of record. Therefore, it seems to me the decision of the board should be reversed.