Patents by Inventor Clark A. Cook

Clark A. Cook 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).

  • HEAT-STABLE MICROENCAPSULATED FRAGRANCE OILS
    Publication number: 20140066357
    Abstract: A process is disclosed to make polyurea microcapsules containing fragrance oil. The microcapsules are heat stable such that the fragrance substantially remains when the microcapsules are exposed for 1 hour at a temperature of from about 190° F. to about 240° F.
    Type: Application
    Filed: August 30, 2012
    Publication date: March 6, 2014
    Applicant: P. H. GLATFELTER COMPANY
    Inventors: Peter C. YAO, Clark A. COOK
  • METHOD OF PREVENTING AGGLOMERATION DURING MICROENCAPSULATION OF FRAGRANCE OILS
    Publication number: 20130313734
    Abstract: A process for preparing a microcapsules comprising an oil-based core material such that particle agglomeration is minimized during wall formation, the process employs reaction of an isocyanate or diisocyanate first with a guanidine compound followed by reaction with a polyfunctional amine.
    Type: Application
    Filed: May 22, 2012
    Publication date: November 28, 2013
    Applicant: P. H. GLATFELTER COMPANY
    Inventors: Peter C. Yao, Clark A. Cook, Philip D. Rhoads