Patents by Inventor Mei-Ing Cheng

Mei-Ing Cheng 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).

  • Method of producing haptics for intraocular lenses having high fracture toughness
    Patent number: 5158719
    Abstract: In a method of producing an intraocular lens having a substantially clear optic and at least one filamentous haptic having high fracture toughness, solid particles are mixed into an uncured polymer, and the mixture is inserted into a mold. Ultrasonic energy is applied to the mold until the mixture solidifies. Heat is applied to complete the curing process. Ultrasonic energy is also preferably applied to the particles and uncured polymer mixture to improve dispersion of the particles therein.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: October 27, 1992
    Assignee: Optical Radiation Corporation
    Inventors: Scott Chang, Thomas R. Paul, Kenneth E. Weber, Edwin A. Creasman, Mei-Ing Cheng, David R. Navarrete, Jimmy D. McCullough
  • Haptics for intraocular lenses having high fracture toughness
    Patent number: 5037435
    Abstract: An intraocular lens comprises a substantially clear optic and at least one filamentous haptic having high fracture toughness. The haptic is formed of a polymer composition comprising low concentrations of solid particles uniformly dispersed throughout a polymer matrix.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: August 6, 1991
    Assignee: Optical Radiation Corporation
    Inventors: Scott Chang, Thomas R. Paul, Kenneth E. Weber, Edwin A. Creasman, Mei-Ing Cheng, David R. Navarrete, Jimmy D. McCullough