Patents by Inventor Lilian Kwan

Lilian 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).

  • Intermittent release dosage form
    Patent number: 5178874
    Abstract: Veterinary delayed release dosage forms which remain in the rumeno-reticular sac of an animal over an extended period of time and in which the therapeutically active substance has a predictable and delayed release pattern. The compositions comprise a dense filler, a disintegrant and a therapeutically active substance. The dosage form has a hydrophobic polymer or co-polymer coating and can deliver a plurality of doses of a medicament intermittently at a preset time interval in the rumen.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: January 12, 1993
    Assignee: SmithKline Beechman Corporation
    Inventors: Lilian Kwan, William Steber
  • Intermittent release dosage form
    Patent number: 5110598
    Abstract: Veterinary delayed release dosage forms which remain in the rumeno-reticular sac of an animal over an extended period of time and in which the therapeutically active substance has a predictable and delayed release pattern. The compositions comprise a dense filler, a disintegrant and a therapeutically active substance. The dosage form a hydrophobic polymer or co-polymer coating and can deliver a plurality of doses of a medicant intermittently at a present time interval in the rumen.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: May 5, 1992
    Assignee: SmithKline Beecham Corp.
    Inventors: Lilian Kwan, William Steber