Patents by Inventor King C. Kwan

King C. Kwan 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).

  • S(+)-ibuprofen-L-amino acid and S(+)-ibuprofen-D-amino acid as onset-hastened enhanced analgesics
    Patent number: 5200558
    Abstract: S(+)-ibuprofen-L-amino acids and S(+)-ibuprofen-D-amino acids, substantially free of other ibuprofen-amino acid stereoisomers, give an onset-hastened, enhanced analgesic response in humans.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: April 6, 1993
    Assignee: Merck & Co., Inc.
    Inventor: King C. Kwan
  • Treatment of hypertension
    Patent number: 4221813
    Abstract: A method of treating hypertension by oral administration of the ethyl ester of L-.alpha.-methyl-3,4-dihydroxyphenylalanine or a pharmaceutically acceptable salt thereof, and pharmaceutical compositions are disclosed.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: September 9, 1980
    Assignee: Merck & Co., Inc.
    Inventors: George O. Breault, King C. Kwan