In re Leum

This is an appeal from a decision of the Board of Appeals of the United States Patent Office affirming that of the Primary Examiner *763rejecting all of the claims 7, 8, 9 and 12 of an application for a patent, alleging new and useful improvements in a method of producing toluene from alkylated aromatic hydrocarbons by catalytic treatment in the presence of benzene for lack of invention over the patent to Sachanen et al., 2,257,920, October 7,1941.

Claim 7, which is the broadest of the appealed claims, is representative of the subject matter and reads as follows:

7. The method of producing toluene…