Hilding Olof Vidar Bergstrom, and Karl Gustaf Trobeck v. George H. Tomlinson and George H. Tomlinson II

WORLEY, Judge.

This is an appeal from a decision of the Board of Patent Interferences of the United States Patent Office awarding to appellees priority of invention of the subject matter embraced in a count which reads as follows:

“The process of regenerating black liquor in the sulfate pulp process, which comprises subjecting the liquor as it comes from the cooking step and before any substantial evaporation thereof to a separate oxidizing step wherein it is intimately contacted with air at an elevated temperature below the boiling point of the liquor, said liquor being subjected to said…