Patents by Inventor Donald L. Wright

Donald L. Wright 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).

  • Aliphatic diols as preservatives for cosmetics and related products
    Patent number: 3970759
    Abstract: Cosmetics and personal care products are protected from spoilage due to microbial attack by the addition of certain poly alcohols and their esters, such as 1,3-diols and the mono- or diesters of such diols.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: July 20, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: John W. Frankenfeld, Donald L. Wright
  • Combined checkout counter and shoplifting detector
    Patent number: D274297
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: June 19, 1984
    Inventor: Donald L. Wright