Patents by Inventor Jon E. Pearson

Jon E. Pearson 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).

  • Use of dispersion polymers for coated broke treatment
    Patent number: 5466338
    Abstract: A process for treating a re-pulped coated broke slurry comprising the addition of a water-soluble polymer dispersion, the water-soluble polymer is formed by polymerizing a water-soluble mixture which comprises: (a) a first cationic monomer represented by the following formula (I): ##STR1## and/or a second cationic monomer represented by the following general formula (II): ##STR2## and (b) (meth)acrylamide in an aqueous solution of a polyvalent anion salt, wherein the polymerization is carried out in the presence of either an organic high-molecular multivalent cation comprising a water-soluble polymer containing at least one monomer of formula (II) or an alkyl ester of acrylic acid.
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: November 14, 1995
    Assignee: Nalco Chemical Company
    Inventor: Jon E. Pearson