Patents by Inventor John E. Rieth

John E. Rieth 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).

  • Silver halide photographic film utilizing cellulose triacetate support with two antistatic layers
    Patent number: 5472833
    Abstract: A process for making a photographic film support comprising applying a film forming coating composition containing an antistat agent to a first clear transparent polymeric film to form an antistat layer on the polymeric film and overcoating the free surface of the antistat layer with a second polymeric film having the same chemical composition as the first polymeric film.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: December 5, 1995
    Assignee: Eastman Kodak Company
    Inventors: Charles T. Havens, John E. Rieth, Alfred B. Fant, Raymond T. Jones
  • Apparatus and method for removing contaminants from rollers
    Patent number: 5379695
    Abstract: An apparatus 10 and method for removing contaminants from a web conveying roller 12 in a machine enclosure 14 comprises a cleaning head 16 that is manually operably controlled external to the machine enclosure 14 so as to resist introducing foreign contaminants into the machine enclosure 14 and reduce environmental emissions. The cleaning head 16 slidably moves lengthwise along the roller to a predetermined location under the influence of first rotatable shaft 30 and is urged into contact with the roller 12 and retracted therefrom under the influence of second rotatable shaft 40.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: January 10, 1995
    Assignee: Eastman Kodak Company
    Inventors: John E. Rieth, Theodore R. Czlonka, Jr.
  • Method of making cellulose ester photographic film base
    Patent number: 5314647
    Abstract: A method of making cellulose ester photographic film base employing microwave radiation for removing the final portion of solvent present in the film.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: May 24, 1994
    Assignee: Eastman Kodak Company
    Inventor: John E. Rieth
  • Cellulose ester-copolyester ether blends
    Patent number: 4992491
    Abstract: A blend of a cellulose and up to 5 percent by weight of a polyesterether resin and photographic film base having improved tear strength prepared from the blend.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: February 12, 1991
    Assignee: Eastman Kodak Company
    Inventor: John E. Rieth