Patents by Inventor Jack M. Rosenfeld

Jack M. Rosenfeld 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 treatment of a fluid
    Patent number: 5580461
    Abstract: A continuous process for treating a fluid comprising at least one chemical contaminant.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: December 3, 1996
    Assignee: Trojan Technologies, Inc.
    Inventors: William L. Cairns, John Carey, Jack M. Rosenfeld
  • Derivatization of organic compounds during their analysis or determination
    Patent number: 4990458
    Abstract: A process for forming derivatives of organic compounds as a step during their analysis. A macroreticular resin is used as both an adsorbent for the analyte and the derivatizing reagent and also as a catalyst for the derivatization reaction. Subsequent serial elution of the absorbed compounds leads to simple separation of the derivatized analyte from the starting materials. Further, the resin impregnated with derivatizing reagent can be used to combine the extraction and derivatization of the analyte. As macroreticular resins are relatively inexpensive, they result in reduced costs compared with conventional catalysts, and their ease of separation from liquid systems makes them easy to use and makes it possible to automate the procedure.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: February 5, 1991
    Assignee: McMaster University
    Inventor: Jack M. Rosenfeld