Patents by Inventor Robert J. Karbowski

Robert J. Karbowski 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).

  • Wastewater disinfection with a combination of biocides
    Patent number: 4959157
    Abstract: Wastewater is effectively disinfected while reducing both chlorine consumption and more particularly the levels of residual chlorine discharged from the wastewater treatment plant. The wastewater is first contacted with a sufficient amount of chlorine to satisfy the chlorine demand and to obtain as low a residual level of chlorine as possible. After the chlorine demand has been satisfied, the wastewater is disinfected with an effective amount of 2,2-dibromo-3-nitrilopropionamide.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: September 25, 1990
    Assignee: The Dow Chemical Company
    Inventor: Robert J. Karbowski
  • Sustained release microbiological control composition
    Patent number: 4800082
    Abstract: A solid antimicrobial composition of a halogenated amide such as 2,2-dibromo-3-nitrilopropionamide and a suitable hydrophilic polymer such as hydroxypropyl methyl cellulose with the optional presence of a compression agent and a mold release agent. The invention is also directed to a method for biological control in an aqueous industrial system by contacting the system with the antimicrobial composition.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: January 24, 1989
    Assignee: The Dow Chemical Company
    Inventors: Robert J. Karbowski, Anita S. Erickson, Charles D. Gartner, Kathleen A. Roy