Patents by Inventor Lothar Ramins

Lothar Ramins 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).

  • Free radical photosensitive materials
    Patent number: 3986880
    Abstract: The keeping qualities (shelf life), and photographic speed of non-silver free radical photosensitive materials are increased by the incorporation of at least one of each of three classes of additives, namely:(1) a stabilizer, usually an alcohol or a phenol;(2) a speed enhancer; and(3) a compound which enhances the capability of heat fixing of films containing both (1) and (2).
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: October 19, 1976
    Assignee: Horizons Incorporated a division of Horizons Research Incorporated
    Inventors: Eugene Wainer, John E. Shirey, Lothar Ramins