Patents by Inventor Ronald Richard Staib

Ronald Richard Staib 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).

  • Reactive cationic resins for use as dry and wet strength agents in sulfite ion-containing papermaking systems
    Patent number: 8771469
    Abstract: This invention relates to resins useful for drainage in papermaking and the process of making paper using the resins. In particular the invention relates to glyoxalated copolymers of acrylamide containing significant amounts of cationic comonomer.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: July 8, 2014
    Assignee: Hercules Incorporated
    Inventors: Shane Cyr, Henk Bakker, Willem Marinus Stevels, Ronald Richard Staib
  • Reactive Cationic Resins for Use as Dry and Wet Strength Agents in Sulfite Ion-Containing Papermaking Systems
    Publication number: 20110056640
    Abstract: This invention relates to resins useful for imparting strength to paper, the process of incorporating these resins into paper and paper produced containing the resins. In particular the invention relates to resins useful for imparting dry-strength and wet strength to paper under conditions of high sulfite ion concentrations.
    Type: Application
    Filed: November 8, 2010
    Publication date: March 10, 2011
    Inventors: Shane Cyr, Henk Bakker, Willem Marinus Stevels, Ronald Richard Staib
  • Reactive cationic resins for use as dry and wet strength agents in sulfite ion-containing papermaking systems
    Patent number: 7828934
    Abstract: This invention relates to resins useful for imparting strength to paper, the process of incorporating these resins into paper and the paper produced containing the resins. In particular the invention relates to resins useful for imparting dry-strength and wet-strength to paper under conditions of high sulfite ion concentrations.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: November 9, 2010
    Assignee: Hercules Incorporated
    Inventors: Shane Cyr, Henk Bakker, Willem Marinus Stevels, Ronald Richard Staib
  • Process for making repulpable wet and dry strength paper
    Patent number: 6245874
    Abstract: A process for making paper with increased wet and dry strength by incorporating into the pulp suspension an ionic thermosettable resin which is the reaction product of dialdehyde and epihalohydrin, or epihalohydrin equivalent, with a copolymer containing monomer units derived by polymerization of monomers comprising acrylamide or alkyl-substituted acrylamide and diallylamine or an acid salt thereof. The paper has wet and dry strength greater than that of paper not containing the resin and has a higher repulpability index than wet strength paper that is essentially the same but contains conventional polyazetidinium ion containing wet strength resin instead of the ionic thermosettable resin.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: June 12, 2001
    Assignee: Hercules Incorporated
    Inventors: Ronald Richard Staib, Joseph Raymond Fanning, William Walter Maslanka
  • Strength resins for paper and repulpable wet and dry strength paper made therewith
    Patent number: 6103861
    Abstract: An ionic thermosettable resin useful for imparting wet and dry strength to paper is made by: (a) providing a copolymer comprising monomer units derived by copolymerization of acrylamide or alkyl-substituted acrylamide and diallylamine or an acid salt thereof; and (b) reacting the copolymer with epihalohydrin or epihalohydrin equivalent and dialdehyde. Paper products made using the resin are more easily repulped than paper products made with conventional wet strength resins.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: August 15, 2000
    Assignee: Hercules Incorporated
    Inventors: Ronald Richard Staib, Joseph Raymond Fanning, William Walter Maslanka