Application of Williams

HATFIELD, Judge.

This-is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the decision of the Primary Examiner rejecting claim 2 in appellant’s application for a patent on a lac-tone. The method claims by which the lactone, called for in appealed claim 2, may be produced, were allowed by the examiner.

The appealed claim reads as follows: “2.® The laevo rotary form of «-hydroxy- Bt B -dimethyl- y-butyro lactone substantially free from the dextro rotary form.”

The following references were relied on by the Patent Office tribunals:

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