Patents by Inventor Julius Jackson

Julius Jackson 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).

  • Manufacture of copper phthalocyanine pigment via aqueous milling
    Patent number: 4024154
    Abstract: Improved process for converting copper phthalocyanine to pigmentary form by dry milling the copper phthalocyanine, contacting the dry-milled copper phthalocyanine with an organic liquid in water emulsion, and recovering the pigmentary copper phthalocyanine. The improvement resides in the use of at least one aliphatic hydrocarbon derived from petroleum as the organic liquid. The pigmentary copper phthalocyanine which results from the improved process exhibits superior tinctorial properties and is especially useful in coating compositions requiring high quality pigment.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: May 17, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Julius Jackson
  • Process for preparing pigmentary .beta.-copper phthalocyanine
    Patent number: 3954795
    Abstract: Improved process for the preparation of copper phthalocyanine in pigmentary form by viscous salt milling crude copper phthalocyanine in the presence of an organic conditioning agent and FeCl.sub.3 followed by acid extraction. This process requires substantially less energy than conventional viscous salt milling and produces a highly dispersible, very strong .beta.-phase copper phthalocyanine which is useful as a pigment in a variety of applications.
    Type: Grant
    Filed: May 2, 1975
    Date of Patent: May 4, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Julius Jackson