In re Mason

This is an appeal from a decision of the Board of Appeals of the United States Patent Office affirming the rejection of four out of five claims in an application for patent on “ Hard Surfaced Composite Insulating Board,” filed February 23, 1926.

Claims numbered 8 and 12 are quoted as representative:

8. Composite fibre board comprising at least one highly dense surface portion or layer of wood or woody material which had been disintegrated into fibrous state and permanently coalesced together while wet under high heat and pressure and containing at least the principal part of the lignins and…