Patents by Inventor Carlos L. Doyle

Carlos L. Doyle 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 dewatering sewage sludges disinfected with lime
    Patent number: 4160731
    Abstract: A copolymer of acrylamide and 3-(methacrylamido)propyl-trimethyl ammonium chloride is effective in the dewatering of sewage sludges that have been disinfected with lime.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: July 10, 1979
    Assignee: American Cyanamid Company
    Inventor: Carlos L. Doyle