Patents by Inventor Victor Kumpera

Victor Kumpera 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).

  • Dewatering of sludges
    Patent number: 6123856
    Abstract: A sludge, preferably derived at least in part from a paper mill, pulp mill or deinking plant, and which contains at least secondary sludge or primary sludge comprising deinking waste, recycled paper waste or mechanical pulping waste, is flocculated by being mixed with a phenolic material and a polyalkylene oxide and is then subjected to dewatering.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: September 26, 2000
    Assignee: Ciba Specialty Chemicals Water Treatments Limited
    Inventors: Victor Kumpera, Stephen Robert Tremont