Patents by Inventor Jan P. Griffin

Jan P. Griffin 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).

  • Patent number: 6007196
    Abstract: A retainer locks an eyeglass sideshield to a temple of an eyeglass frame. The retainer comprises a clamp, an ann and a hook. A clamp is adapted to attach to the temple of the eyeglass frame. The arm has a first end and a second end. The first end is connected to the clamp and the second end is connected to the hook. The hook comprises a lip adapted to engage the sideshield and prevents the sideshield from being removed from the temple.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: December 28, 1999
    Assignee: Titmus Optical, Inc.
    Inventors: Adeeb G Saba, Jan P Griffin, Aly G Khalifa
  • Patent number: 4740072
    Abstract: A vision tester having a casing horizontally adjustable with respect to a base. Inside the casing a rotating drum has a first end rotatably fixed to the casing and a second end unconnected to the casing and having an open portion. An illumination device is removably mounted to the casing and inserted inside the rotating drum through the open portion. The illumination device provides illunination to a plurality of test slides mounted to the surface of the rotating drum. A viewing device is mounted to the casing and provides left and right lenses simulating a far vision of the illuminated test slide. A pair of near vision lenses is rotatably mounted inside the viewing device and may be rotated to overlap the far vision lenses to simulate a near vision of the test slide. Peripheral vision is tested by light provided from an illumination source through fiber optic cables to peripheral vision test locations on the viewing device.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: April 26, 1988
    Assignee: Titmus Optical, Inc.
    Inventors: Jan P. Griffin, Anthony G. Gates, Delroy K. Rinehart