Patents by Inventor Dennis A. Parrish

Dennis A. Parrish 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).

  • Fabric softener active composition
    Patent number: 8883713
    Abstract: The present invention is directed to compositions that are characterized by the presence of ester quats with specific characteristics that promote dispersibility at low temperature. Among the important characteristics of the ester quats are an iodine value of 65-85 and distribution of: 33-38% monoesters, 50-55% diesters and 7-12% triesters.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: November 11, 2014
    Assignee: Evonik Industries AG
    Inventors: Dennis A. Parrish, Jens P. Hildebrand, Miyako Hisamoto
  • Method for forming amino acid derivatives from tricyclic diketopiperazines
    Publication number: 20020072601
    Abstract: Amino acid derivatives are formed by reacting a tricyclic diketopiperazine with a nucleophillic compound. In a preferred embodiment, pyroglutamic diketopiperazine is reacted with an amine or an alcohol which opens the six member ring.
    Type: Application
    Filed: August 17, 2001
    Publication date: June 13, 2002
    Applicant: University of Southern Mississippi
    Inventors: Lon J. Mathias, Dennis A. Parrish, Louis Somlai