Patents by Inventor Philip J. McMahon

Philip J. McMahon 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).

  • Process for preparing aralkyl halides
    Patent number: 4250340
    Abstract: A process for chlorinating m-phenoxytoluene by reaction with sulphuryl chloride in the presence of an initiator, in which the initiator is added not only at the beginning of, but also during, the reaction, and/or in which the initiator is a tert-butyl peralkanoate, and/or in which the reaction solvent is perchloroethylene and/or in which the m-phenoxytoluene and sulphuryl chloride are used in substantially equimolar amounts.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: February 10, 1981
    Assignee: Croda Synthetic Chemicals Limited
    Inventors: Philip J. McMahon, Frank S. Yates