Application of Karl Folkers

MARTIN, Judge.

The appealed claims of Karl Folkers’ application1 are directed to N-panto-thenyl derivatives of two naturally-occurring amino acids, phenylalanine and his-tidine, and a method of preparing those derivatives by reacting the corresponding P-alanyl-amino acid with pantoyl lactone. While Folkers’ disclosure shows, and he originally claimed, naturally-occurring amino acids in general, only the following four claims remain:

12. The process of preparing N-pantothenyl-dl-phenylalanine which comprises reacting N-(p-alanyl)-dl-phenylalanine with pantoyl lactone.

13. The process of preparing…