Patents by Inventor Harry I. Zeltzer

Harry I. Zeltzer 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
    Publication number: 20030103188
    Abstract: A pupil reduction corneal contact lens having a light-admitting central area surrounded by a light-blocking area. The central area can be clear or have a slight tint for reducing glare that would not reduce visual acuity to 20/25 or less. The lenses can be soft, gas-permeable or hard.
    Type: Application
    Filed: September 23, 2002
    Publication date: June 5, 2003
    Inventor: Harry I. Zeltzer
  • Contact lens for correction of color blindness
    Patent number: 4998817
    Abstract: A corneal contact lens for the correction of color blindness, which is clear except for a thin red exterior layer covering the area admitting light to the pupil.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: March 12, 1991
    Inventor: Harry I. Zeltzer