Patents by Inventor Clifford L. MacBrair, Jr.

Clifford L. MacBrair, 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).

  • Controlled temperature process for making 2,2'-oxodisuccinates useful as laundry detergent builders
    Patent number: 4798907
    Abstract: High yields of 2,2'-oxodisuccinate are secured by reacting maleate and malate in aqueous alkaline media containing mixtures of particular divalent (e.g., Ca.sup.2+) and solubilizing monovalent (e.g., Na.sup.+) cations. In a preferred embodiment, the process has both an elevated temperature primary reaction step and one or more low temperature maturation steps. Yields of 2,2'-oxodisuccinate are increased and formation of fumarate byproduct is minimized.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: January 17, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Clifford L. MacBrair, Jr., Daniel S. Connor, Herbert C. Kretschmar, James A. Cleary