Patents by Inventor Isaiah Von

Isaiah Von 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).

  • Process for azo pigments
    Patent number: 4217273
    Abstract: A pigment modifier composition for azo pigments is prepared in situ by chlorination of 2-hydroxy-3-naphthoic acid with a hypochlorite such that up to 10% of the acid is converted into 1-chloro-2-hydroxy-3-naphthoic acid.
    Type: Grant
    Filed: January 5, 1979
    Date of Patent: August 12, 1980
    Assignee: American Cyanamid Company
    Inventor: Isaiah Von