Patents by Inventor Paul D. Newcomb

Paul D. Newcomb 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).

  • Contact lens mold
    Patent number: 4284399
    Abstract: A two piece contact lens mold having a pair of blunt, continuous mating surfaces extending around the periphery of the mold cavity is disclosed. Location of the mold parting line tangent to the lens edge substantially eliminates registration problems when a relief groove is provided at the edge of the female member. Parameters for mold materials and important dimensions are also disclosed. The mold can produce finished contact lenses which do not require further machining.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: August 18, 1981
    Assignee: American Optical Corporation
    Inventors: Paul D. Newcomb, Paul A. Davignon, Harold M. Miller
  • Contact lens mold
    Patent number: 4209289
    Abstract: A two piece contact lens mold having a pair of blunt, continuous mating surfaces extending around the periphery of the mold cavity is disclosed. Parameters for mold materials and important dimensions are also disclosed. The mold can produce finished contact lenses which do not require further machining.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: June 24, 1980
    Assignee: American Optical Corporation
    Inventors: Paul D. Newcomb, Ethan C. Hopkins, Paul A. Davignon