Patents by Inventor Ivan W. Chin

Ivan W. Chin 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).

  • Formulation for electrically assisted delivery of lidocaine and epinephrine
    Patent number: 6295469
    Abstract: The invention relates to formulations for the electrically assisted transdermal delivery of lidocaine and epinephrine. The present invention further provides methods and devices for the electrically assisted delivery of local anesthetics, preferably lidocaine.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: September 25, 2001
    Assignee: Alza Corporation
    Inventors: Andreas Linkwitz, Ivan W. Chin, J. Richard Gyory, Ronald V. Thompson, Paul J. Urbanski
  • Transdermal electrotransport delivery device including a cathodic reservoir containing a compatible antimicrobial agent
    Patent number: 6181963
    Abstract: A transdermal electrotransport drug delivery device having an anode, a cathode and a source of electrical power electrically connected to the anode and the cathode. The cathode includes a cathodic electrode and a cathodic reservoir comprised of a housing composed of a polymeric material and an aqueous medium in contact with the housing. The aqueous medium includes i) a drug or an electrolyte salt or a mixture thereof and ii) a cetylpyridinium salt in an amount sufficient to inhibit microbial growth in the aqueous medium. The polymeric material is compatible with the cetylpyridinium salt. A process is also provided wherein when electric current flows from the source of electrical power so that the drug is transdermally delivered to the patient by electrotransport from the anodic reservoir, the cetylpyridinium salt is not transdermally delivered to the patient by electrotransport from the cathodic reservoir. A process for preparing a transdermal electrotransport drug delivery device is also provided.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: January 30, 2001
    Assignee: Alza Corporation
    Inventors: Ivan W. Chin, Thomas O. Murdock, Michel J. N. Cormier
  • Process for controlling pathogens in container
    Patent number: 5489281
    Abstract: A process for delivering a biocide to a container comprising admitting a biocide delivery device through an exit port of a urine container where the device is sized for passage through the exit port is disclosed.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: February 6, 1996
    Assignee: Alza Corporation
    Inventors: Tyler Watanabe, Su I. Yum, Eun S. Lee, Ivan W. Chin
  • Biocide dispensing device for use in container
    Patent number: 5417676
    Abstract: An apparatus is disclosed comprising in combination (1) a container for receiving a fluid, and having an exit port, and (2) a delivery system designed for passage through the exit port into the container for releasing a biocide inside the container.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: May 23, 1995
    Assignee: Alza Corporation
    Inventors: Tyler Watanabe, Su I. Yum, Eun S. Lee, Ivan W. Chin
  • Antipathogen assembly
    Patent number: 5417675
    Abstract: The invention disclosed and claimed an apparatus that relates to a delivery system comprising a biocide, with the delivery system designed and shaped for passages through the exit port of a urine container into the container. The invention disclosed and claim pertains also to a method of preventing infection in a patient by using the apparatus connected to a patient through a catheter.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: May 23, 1995
    Assignee: Alza Corporation
    Inventors: Tyler Watanabe, Su I. Yum, Fun S. Lee, Ivan W. Chin
  • Antimicrobial device for urine drainage container
    Patent number: 5176665
    Abstract: The invention pertains to a delivery system comprising a biocide, with the delivery system designed and shaped for passage through the exit port of a urine container into the container.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: January 5, 1993
    Assignee: Alza Corporation
    Inventors: Tyler Watanabe, Su I. Yum, Eun S. Lee, Ivan W. Chin