Patents Represented by Attorney Vilhauer, McClung & Stenzel Chernoff

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  • Kraft pulping process wherein sulphide-rich and sulphide-lean white liquors are generated
    Patent number: 5507912
    Abstract: There is disclosed a process of increasing efficiency in a kraft pulping process that utilizes initial, bulk, and final delignification steps, a recovery boiler, and a caustic treatment step, which allows production of a white liquor stream that is separated into a sulphide-lean and sulphide-rich streams.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: April 16, 1996
    Assignee: H. A. Simons Ltd.
    Inventor: Patrik P. H. Lownertz