Patents by Inventor Yvon Louis Renotte

Yvon Louis Renotte 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).

  • Direct-positive silver halide emulsions
    Patent number: 3957518
    Abstract: Direct-positive silver halide emulsions comprising fogged silver halide grains and having adsorbed to the surface of said grains an electron-acceptor have improved stability and speed when subsequent to fogging of said grains and addition of the said electron-acceptor the pH of the emulsion is lowered, preferably below pH 6.
    Type: Grant
    Filed: July 9, 1973
    Date of Patent: May 18, 1976
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Willy Joseph Vanassche, Herman Alberik Pattyn, Yvon Louis Renotte