BALDWIN, Judge.
This appeal is from the decision of the Patent Office Board of Appeals, adhered to on reconsideration, sustaining the final rejection of all claims in appellant's application.
The invention defined by the appealed claims relates to a method for making cyclic mono-sulfides, such as ethylene sulfide, which comprises heating an alkali or alkaline earth metal thiocyanate salt with a cyclic carbonate of certain diols...
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