United States Court of Appeals District of Columbia.https://leagle.com/images/logo.png
Decided March 19, 1945.
Decided March 19, 1945.
Attorney(s) appearing for the Case
Mr. Raymond L. Greist of the Bar of the Supreme Court of Illinois, of Chicago, Ill., pro hac vice, by special leave of Court, with whom Mr. Earle D. Crammond, of Washington, D. C., was on the brief, for appellant.
Mr. R. F. Whitehead, United States Patent Office, of Washington, D. C., with whom Mr. W. W. Cochran, Solicitor, United States Patent Office, of Washington, D. C., was on the brief, for appellee.
Before MILLER, EDGERTON, and ARNOLD, Associate Justices.
United States Court of Appeals District of Columbia.
MILLER, Associate Justice.
This is a proceeding under R.S. 4915.1 The claims are for a method of making fused quartz articles. All claims were denied both by the Patent Office and by the District Court. On this appeal, it is contended that the claimed invention lies in the use of silicic acid, "an entirely different chemical compound" than powdered quartz crystals or other powders, in the first step of the process. This is the vital point...
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