Patents by Inventor Jeffery D. Robbins

Jeffery D. Robbins 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).

  • Method for preparation of N-phosphonomethylglycine or salts
    Patent number: 4605522
    Abstract: A method for the production of N-phosphonomethylglycine and soluble salts thereof is disclosed in which glycinemethylenephosphinic acid or its soluble salts are reacted with an excess of an alkali or alkaline earth base for a period of time and at a sufficient temperature to cause oxidation of the glycinemethylenephosphinic acid or its soluble salts thereof to N-phosphonomethylglycine salts, from which N-phosphonomethylglycine may be obtained by acidification. The N-phosphonomethyleglycine or its soluble salts, are used as herbicides.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: August 12, 1986
    Assignee: Stauffer Chemical Company
    Inventor: Jeffery D. Robbins