Patents by Inventor Delford O. Dougherty

Delford O. Dougherty 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).

  • Drop dispenser
    Patent number: 4553686
    Abstract: An improved drop dispenser for use with a closed compressible container, which dispenser is comprised of a small diameter tubular dispenser member of a resilient plastic material deformed at the free end thereof to provide a normally closed, integral valve-like arrangement, which valve-like arrangement is pressure actuated and partially opens when pressure within the container increases.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: November 19, 1985
    Assignee: St. Luke's Hospital
    Inventor: Delford O. Dougherty
  • Eye dropper with light source
    Patent number: 4515295
    Abstract: A device for illuminating an area immediate to the dispensing orifice of a compressible eye drop dispenser. A miniature light source is held in a fixed, predetermined relationship with respect to the dispenser and provides a collimated beam of light which projects onto, and illuminates, the dispensing orifice.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: May 7, 1985
    Assignee: St. Luke's Hospital
    Inventor: Delford O. Dougherty
  • Eye drop dispenser
    Patent number: 4471890
    Abstract: An eyedrop dispenser for dispensing droplets of liquid from a container comprises a closure cap member for liquid tight attachment to the container. At least one projection extends laterally outward from the cap member and has a laterally outward facing surface for bracing against a portion of the head of a person to locate and steady the dispenser during use.
    Type: Grant
    Filed: April 29, 1982
    Date of Patent: September 18, 1984
    Assignee: St. Luke's Hospital
    Inventor: Delford O. Dougherty
  • Eye drop dispenser
    Patent number: D275128
    Type: Grant
    Filed: April 29, 1982
    Date of Patent: August 14, 1984
    Assignee: St. Luke's Hospital
    Inventor: Delford O. Dougherty