Patents by Inventor Albert Feldman

Albert Feldman 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 a smooth plate of diamond
    Patent number: 5221501
    Abstract: An improved method of producing transparent diamond laminates employs a substrate which is removed once a second layer is deposited over the diamond coating, thereby exposing a smooth diamond surface. The second coating should have a refractive index substantially identical to diamond, with zinc selenide and titanium dioxide being particularly preferred. Diamond films having two smooth surfaces may be produced by simultaneous deposition on parallel, opposed substrates until the two diamond films merge together to form a single film or plate, followed by removal of at least a portion of the two substrates.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: June 22, 1993
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: Albert Feldman, Edward N. Farabaugh
  • Pressure and temperature insensitive glass and optical coatings and fibers therefrom
    Patent number: 4709987
    Abstract: Pressure and temperature insensitive optical fibers are produced using a Ta.sub.2 O.sub.5 based glass composition which has a high bulk modulus and a low thermal expansion coefficient. The glass composition can function as the cladding in the optical fiber or as a protective coating which surrounds the cladding thereby protecting the fiber from fluctuations in temperature and pressure.
    Type: Grant
    Filed: December 10, 1985
    Date of Patent: December 1, 1987
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Douglas Blackburn, Albert Feldman, Nicholas Lagakos