Patents by Inventor Gerald D. Day

Gerald D. Day 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).

  • Syringe with filter, and filter therefor
    Patent number: 6796965
    Abstract: A syringe comprising a one-way filter which permits flow of fluid into the syringe unfiltered but which filters the fluid when expelled from the syringe.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: September 28, 2004
    Inventors: Alison Jayne Dumaresq-Lucas, Gerald D. Day
  • Syringe with filter, and filter therefor
    Publication number: 20010007062
    Abstract: A syringe comprising a one-way filter which permits flow of fluid into the syringe unfiltered but which filters the fluid when expelled from the syringe.
    Type: Application
    Filed: February 20, 2001
    Publication date: July 5, 2001
    Inventors: Alison Jayne Dumaresq-Lucas, Gerald D. Day