Patents by Inventor Dennis D. Cerny

Dennis D. Cerny 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).

  • Solid algicide, preparation and usage in recirculating water
    Patent number: 7135436
    Abstract: Technology is provided for treating recirculating water in a system to control algae in, for example, a cooling water, an evaporative condenser, a heat exchanger, or a decorative fountain. A solid composition comprising terbuthylazine dispersed in polyethylene glycol is contacted with recirculating water. The polyethylene glycol slowly dissolves, and the terbuthylazine is delivered into the water. The composition is preferably prepared by dispersing the terbuthylazine in molten polyethylene glycol followed by molding and solidifying. A preferred polyethylene glycol has an average molecular weight of about 8,000. The system can accomplish addition of terbuthylazine to recirculated water without the need for a dosing pump and without exposure of operating personnel to terbuthylazine.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: November 14, 2006
    Assignee: J.F. Daley International, Ltd.
    Inventors: Leonard M. Van Vossen, Dennis D. Cerny
  • Solid algicide, preparation and usage in recirculating water
    Publication number: 20040222166
    Abstract: Technology is provided for treating recirculating water in a system to control algae in, for example, a cooling water, an evaporative condenser, a heat exchanger, or a decorative fountain. A solid composition comprising terbuthylazine dispersed in polyethylene glycol is contacted with recirculating water. The polyethylene glycol slowly dissolves, and the terbuthylazine is delivered into the water. The composition is preferably prepared by dispersing the terbuthylazine in molten polyethylene glycol followed by molding and solidifying. A preferred polyethylene glycol has an average molecular weight of about 8,000. The system can accomplish addition of terbuthylazine to recirculated water without the need for a dosing pump and without exposure of operating personnel to terbuthylazine.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 11, 2004
    Applicant: J.F. DALEY INTERNATIONAL, LTD.
    Inventors: Leonard M. Van Vossen, Dennis D. Cerny