Patents by Inventor Raymond Albert Schep

Raymond Albert Schep has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Synthesis of deuterated opiate glucuronides
    Patent number: 5908927
    Abstract: A method of synthesizing deuterated morphine-3.beta.-glucuronide, morphine-6.beta.-glucuronide, and codeine-6.beta.-glucuronide is disclosed. The chemicals are used as internal standards for mass spectrometry analyses of morphine, heroin, and codeine uses. They are also useful in the study of metabolism of morphine and codeine.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: June 1, 1999
    Assignee: High Standard Products Corporation
    Inventors: Hoa Duc Nguyen, Duc Tien Nguyen, Raymond Albert Schep, Trinh Duc Nguyen, Phuong Thi Ngoc Pham