Patents by Inventor Janos Szappanos

Janos Szappanos 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 and optical means for improving or modifying color vision and method for making said optical means
    Patent number: 5774202
    Abstract: A method and optical articles for improving or modifying human color vision by using a color filter with a spectral transmission .tau.(.lambda.) to compensate for differences between a spectral sensitivity P*(.lambda.), D*(.lambda.), T*(.lambda.) of an eye with impaired color vision and spectral sensitivity P(.lambda.), D(.lambda.), T(.lambda.) of an eye with normal color vision. The optical article may be realized as an eyeglass, a contact lens or an intraocular lens, or by any other optical implement placed between the eye and the object to be viewed.
    Type: Grant
    Filed: May 1, 1996
    Date of Patent: June 30, 1998
    Assignee: Coloryte Hungary Optikai Kutato, Fejleszto es Gyarto Reszvenytarsasag
    Inventors: Gyorgy Abraham, Guttfriedne Wenzel, Janos Szappanos