PHILADELPHIA--(BUSINESS WIRE)--Lannett Company, Inc. (AMEX:LCI), a manufacturer of generic pharmaceuticals, today announced that its wholly owned subsidiary, Cody Laboratories (Cody), a manufacturer/supplier of bulk active pharmaceutical ingredients (API), has received approval from the United States Patent and Trademark Office for its patent (US 7,399,859 B1) regarding a method for the preparation of Hydromorphone and Hydrocodone.