Appeal No. 86-1692. Decided April 21, 1987. Philip A. Mallinckrodt, of Mallinckrodt Mallinckrodt, Salt Lake City, Utah, for appellant. Harris A. Pitlick, Associate Solicitor, Office of the Solicitor, Arlington, Va., for appellee. With him on the brief were Joseph F. Nakamura, Solicitor, and Fred E. McKelvey, Deputy Solicitor. Appeal from the Board of Patent Appeals and Interferences. Before SMITH, NEWMAN, and BISSELL, Circuit Judges. PAULINE NEWMAN, Circuit Judge. Patent applicant Jay P. Nielson