Patents by Inventor James K. Chapman, Jr.

James K. Chapman, 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).

  • Distillation process for purification of triaryl phosphate esters
    Patent number: 3945891
    Abstract: Crude phosphate ester products resulting from the phosphorylation of phenol, lower alkyl phenols and mixtures of same are purified to prepare triaryl phosphates substantially free of unreacted phenols by the sequential steps of flash distillation and fractional distillation under controlled conditions with removal of the phosphate ester product as a liquid underflow.
    Type: Grant
    Filed: June 20, 1974
    Date of Patent: March 23, 1976
    Assignee: FMC Corporation
    Inventors: Robert A. Aal, Norman H. C. Chen, James K. Chapman, Jr.