Patents by Inventor James P. Kreft

James P. Kreft 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).

  • Light-transmitting elastomeric suction lens
    Patent number: 5349393
    Abstract: An ophthalmic lens is disclosed for changing the focal point of a light-transmitting element. Formed from a light-transmitting silicone, the lens has a concave surface for creating suction when applied to a smooth surface. An exposed surface opposes the concave surface for providing a specific diopter. The lens quickly and impermanently attaches with finger pressure to a desirable smooth surface such as the lens of eyeglasses.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: September 20, 1994
    Inventor: James P. Kreft