Patents by Inventor Steven R. Kurowsky

Steven R. Kurowsky 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).

  • Amine polymers having dewatering activity
    Patent number: 4254250
    Abstract: Amine polymers are used to dewater suspensions of particulate matter in water. The polymers are synthesized by the reaction of a nitrile polymer such as polyacrylonitrile, an aminating agent, and a sulfur activator. The dewatering properties of these amine polymers can be beneficially employed to treat sewage sludge, silt laden water, industrial waste and the like.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: March 3, 1981
    Assignee: Pfizer Inc.
    Inventors: Raymond C. Glowaky, Steven R. Kurowsky, Robert J. Sysko