Patents by Inventor Mark B. Freedman

Mark B. Freedman 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 aryl trifluoromethylsulfides
    Patent number: 4020169
    Abstract: Trifluoromethylthiocopper, formed in situ by the reaction of bis-(trifluoromethylthio)mercury with copper, reacts with aromatic bromides and iodides to give aryl trifluoromethyl sulfides.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: April 26, 1977
    Assignee: Merck & Co., Inc.
    Inventors: David C. Remy, Mark B. Freedman