Patents by Inventor Melvin Eisner

Melvin Eisner 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).

  • Melanin polyvinyl alcohol plastic laminates for optical applications
    Patent number: 7029758
    Abstract: The present invention relates to the use of water soluble melanin in solid plastic films of polyvinyl alcohol to be used in conjunction with other plastics to make laminated sheets or lenses. Such laminates will be used as filters to protect against photochemical damage from electromagnetic radiation.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: April 18, 2006
    Inventors: James Gallas, Melvin Eisner
  • Methods for tinting plastic films and sheets with melanin
    Publication number: 20050230347
    Abstract: This invention relates to the field of eye protection and vision enhancement by filters of UV and the higher energy visible (HEV) light—such as sunglass lenses. More specifically, it relates to the process of tinting plastic films and sheets with solutions of synthetic melanin. Such plastic films may include sunglass lenses, and ophthalmic lenses in general, windows, light filters such as photograph covers, canopies, etc., and other similar media utilized to protect valuable goods from radiation damage.
    Type: Application
    Filed: April 14, 2004
    Publication date: October 20, 2005
    Inventors: James Gallas, Mark Penick, Melvin Eisner, Joshua James
  • Melanin polyvinyl alcohol plastic laminates for optical applications
    Publication number: 20030092794
    Abstract: The present invention relates to the use of water soluble melanin in solid plastic films of polyvinyl alcohol to be used in conjunction with other plastics to make laminated sheets or lenses. Such laminates will be used as filters to protect against photochemical damage from electromagnetic radiation.
    Type: Application
    Filed: September 30, 2002
    Publication date: May 15, 2003
    Inventors: James Gallas, Melvin Eisner
  • Floated gravity gradiometer and method
    Patent number: 4955232
    Abstract: An apparatus and method for measuring the vertical gradient of the vertical gravitational field using a gravity gradiometer comprising a housing containing a fluid, a float buoyantly supported within the fluid, mechanism for varying the metacentric height of the float, and apparatus for obtaining a measure of the gravitational gradient acting on the float resulting from varying the metacentric height.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: September 11, 1990
    Assignee: Amoco Corporation
    Inventors: Theodore V. Lautzenhiser, Melvin Eisner