Patents by Inventor Dany C. Dubromel

Dany C. Dubromel 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 preparing silver halide grains of improved photographic and handling characteristics
    Patent number: T962004
    Abstract: A method is disclosed of forming silver halide grains capable of forming a surface latent image upon exposure to visible light. The grains are formed by incorporating from 10.sup.-6 to 10.sup.-10 mole of iridium per mole of silver before first ripening. The iridium is incorporated in the presence of a water soluble purine base or a water soluble salt thereof.
    Type: Grant
    Filed: March 29, 1977
    Date of Patent: September 6, 1977
    Inventors: Claude G. Dostes, Dany C. Dubromel, Jean-Francois Le Guen