Patents by Inventor Norman Dy

Norman Dy 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).

  • Negative pressure pump
    Patent number: 6283943
    Abstract: A medication infusion pump includes a housing, a medication chamber defined within the housing, means for supplying the medication from the medication chamber to a patient, a reservoir defined within the housing and adapted to apply a predetermined negative pressure to a medication within the medication chamber, and a gas within the reservoir. The gas has a vapor pressure less than ambient atmospheric pressure at normal human physiological temperature, more specifically less than 14.7 psia at 37° C.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: September 4, 2001
    Assignee: MiniMed Inc.
    Inventors: Norman Dy, William P. Van Antwerp