Patents by Inventor Andrew Torok

Andrew Torok 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).

  • Reactive color developing substrates for manifold copy systems and process for producing same
    Patent number: 3989278
    Abstract: Improved reactive color developing substrates for manifold copy systems are produced by controlled acid treatment of smectite clay minerals, followed by severe attrition grinding to produce an aqueous colloidal suspension of the acid treated smectite. Thereupon, the colloidalized acid treated smectite is combined with an aqueous suspension of platy kaolinite, thoroughly blended and co-precipitated by the addition of appropriate flocculants such as aluminum sulfate.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: November 2, 1976
    Assignee: Georgia Kaolin Company
    Inventors: Andrew Torok, Thomas F. Walsh
  • Color developing substrates for manifold copy systems and process for producing the same
    Patent number: 3957527
    Abstract: Improved reactive color developing substrates for manifold copy systems are produced by controlled acid treatment of smectite clay minerals, followed by severe attrition grinding to produce an aqueous colloidal suspension of the acid treated smectite. Thereupon, the colloidalized acid treated smectite is combined with an aqueous suspension of talc, thoroughly blended and co-precipitated by the addition of appropriate flocculants such as aluminum sulfate.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: May 18, 1976
    Assignee: Georgia Kaolin Company
    Inventors: Andrew Torok, Thomas F. Walsh