Patents by Inventor David S. Pfoff

David S. Pfoff 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: 4816031
    Abstract: An intraocular lens including a PMMA intraocular lens implant, a second soft and pliable lens disposed thereover such as that of silicon, and electromechanical circuitry for regulating the distance between the soft silicon lens and the hard PMMA lens. The electromechanical circuitry can include a microsolar power cell, a microprocessor, a microfluid pump, a micro reservoir for fluid, and a micro DC storage cell. The electromechanical circuitry provides for adjustment of the focal point of the lens system for accommodation from distance to near vision.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: March 28, 1989
    Inventor: David S. Pfoff