Interference No. 102,922
Interference No. 103,088
carbon. Gill cites no evidence that R may be one. In fact,
Gill admits in their brief (GB 41) that the alkyl ketene
dimers are
commercially available and that their formula is known. The
prior art in the record establishes that AKD contains alkyl
groups containing a minumum of 8 carbon atoms. See U.S.
Patent
Nos. 3,905,397; 4,428,466 and 4,470,877.
Gill also argues that Dumas has not shown the limitations
"at least 95% polymer" and in '088 that the process step
of forming a laid cellulosic sheet by dewatering the aqueous
dispersion and drying the cellulosic sheet to form the desired
paper and paper products in the Dumas version of the counts.
We find that Dumas made a satisfactory showing as to the Gill
version of each of the counts in each interference. Hence,
these arguments by Gill are not persuasive.
Gill contends that derivation was not proven because
Dumas did not establish (1) what was in Gill's mind or what
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