LifeCell Corp., The Woodlands, Texas, said it received formalnotification from the U.S. Patent and Trademark Office of theallowance of claims for the company's Universal Tissue Processpatent. The patent, scheduled to be issued this summer, coversproprietary universal tissue transplants.

Sepracor Inc., Marlborough, Mass., said it was issued U.S. patent No.5,302,257 covering a new catalytic asymmetric synthesis method usedfor the low-cost manufacture of single-isomer drugs and drugintermediates. The patent is called "Electrocatalytic Dihydroxylation ofOlefenic Compounds."

Vyrex Corp., La Jolla, Calif., said it was issued U.S. patent No.5,296,472 covering its glycotechnology methods for delipidation ofskin and cerumen removal.

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