Patents by Inventor Leonard G. Wolfson

Leonard G. Wolfson 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).

  • Apertured contact lenses
    Patent number: 6036314
    Abstract: An apertured polymer button in which that portion of the button which is machined and polished to produce a contact lens contains apertures having a diameter of 5 to 8 microns to allow the passage through the finished lens of fluids containing dissolved oxygen.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: March 14, 2000
    Inventor: Leonard G. Wolfson
  • Polymer buttons having holes therein and contact lenses manufactured therefrom and method of manufacture
    Patent number: 5104213
    Abstract: An apertured polymer button in which that portion of the button which is machined and polished to produce a contact lens contains holes having a diameter of 40 to 60 microns and allow the passage through the finished lens of fluids and/or holes having a diameter of 5 to 25 microns and allow the passage through the finished lens of gases such as oxygen and carbon dioxide but not fluids.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: April 14, 1992
    Inventor: Leonard G. Wolfson
  • Hydrophilic contact lens case
    Patent number: 4122942
    Abstract: A hydrophilic contact lens with at least the surfaces formed of a high molecular weight synthetic polymer, is treated by exposure to a plasma of an inert gas under near-vacuum conditions. The treated lenses are stored in aqueous solution held in a plastic storage case, at least the interior surfaces of the storage case having also been treated with the inert gas plasma to also render its interior surfaces hydrophilic.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: October 31, 1978
    Inventor: Leonard G. Wolfson