Patents by Inventor Edward H. Zeigler, Jr.

Edward H. Zeigler, Jr. 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).

  • Co-nitrating trimetholethane and diethylene glycol
    Patent number: 4352699
    Abstract: It has been discovered that when co-nitrating a mixture of trimethylolethane and diethylene glycol, a storage stable spent acid can be obtained if during the co-nitration an excess of from about 60 to about 100% by weight of nitric acid over that stoichiometrically required is employed.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: October 5, 1982
    Assignee: Hercules Incorporated
    Inventor: Edward H. Zeigler, Jr.