Patents Represented by Attorney, Agent or Law Firm Joanne M. Rossi
  • Proteins and polymers for use as pitch and stickies control agents in pulp and papermaking processes
    Patent number: 6461477
    Abstract: Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. A combination of a protein and a cationic polymer is added to the pulp or applied to deposition prone surfaces of a papermaking system.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: October 8, 2002
    Assignee: Hercules Incorporated
    Inventors: Duy T. Nguyen, Qu-Ming Gu
  • Use of carboxylate alkyl polyglycoside surfactant to increase the foam of other anionic surfactants
    Patent number: 6248792
    Abstract: The present invention relates to the use of a carboxylated alkyl polyglycoside in combination with an anionic surfactant to increase foam. The carboxylated alkyl polyglycoside, according to the invention, can be the reaction product of an alkyl polyglycoside with an alpha- or 2-halocarboxylic acid; the reaction product of an alkyl polyglycoside with an alpha, beta-unsaturated carboxylic acid; or the reaction product of an alkyl polyglycoside with a cyclic carboxylic acid anhydride.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: June 19, 2001
    Assignee: Henkel Corporation
    Inventor: Virginia Lazarowitz