Patents by Inventor Steven J. Severtson

Steven J. Severtson 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).

  • Patent number: 9469797
    Abstract: A pressure sensitive adhesive composition comprising the polymerization product of: (A) a monomer selected from the group consisting of alkyl acrylates, alkyl methacrylates, and combinations thereof; and (B) a macromonomer comprising the reaction product of (a) a hydroxy-functional, ethylenically unsaturated monomer (e.g., an alkyl acrylate or methacrylate where the alkyl group is a C1-C6 alkyl group), (b) a bio-based monomer, and (c) a modifying monomer that lowers the Tg of the macromonomer relative to the Tg of the same macromonomer prepared in the absence of the modifying monomer.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: October 18, 2016
    Assignee: Regents of the University of Minnesota
    Inventors: Monique Roerdink Lander, Jiguang Zhang, Steven J. Severtson
  • Publication number: 20150210907
    Abstract: A pressure sensitive adhesive composition comprising the polymerization product of: (A) a monomer selected from the group consisting of alkyl acrylates, alkyl methacrylates, and combinations thereof; and (B) a macromonomer comprising the reaction product of (a) a hydroxy-functional, ethylenically unsaturated monomer (e.g., an alkyl acrylate or methacrylate where the alkyl group is a C1-C6 alkyl group), (b) a bio-based monomer, and (c) a modifying monomer that lowers the Tg of the macromonomer relative to the Tg of the same macromonomer prepared in the absence of the modifying monomer.
    Type: Application
    Filed: August 11, 2011
    Publication date: July 30, 2015
    Inventors: Jiguang Zhang, Steven J. Severtson, Monique Roerdink Lander
  • Patent number: 6548558
    Abstract: Methods for controlling wax and other contaminants by improving the dispersion of these materials through the addition of contaminant dispersants to the process of recycling paper and paperboard are disclosed. A preferred contaminant dispersant comprises: a) water; b) a plasticizer; c) an anionic dispersant; d) a surfactant wetting agent; and e) either 1) an acid or lecithin and optionally, a base, or 2) a preneutralized component.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: April 15, 2003
    Assignee: Ondeo Nalco Company
    Inventors: Steven J. Severtson, Martin J. Coffey
  • Publication number: 20010041749
    Abstract: Methods for controlling wax and other contaminants by improving the dispersion of these materials through the addition of contaminant dispersants to the process of recycling paper and paperboard are disclosed.
    Type: Application
    Filed: May 17, 2001
    Publication date: November 15, 2001
    Inventors: Steven J. Severtson, Martin J. Coffey
  • Patent number: 6248793
    Abstract: Methods for controlling wax and other contaminants by improving the dispersion of these materials through the addition of contaminant dispersants to the process of recycling paper and paperboard are disclosed. A preferred contaminant dispersant comprises: a) water; b) a plasticizer; c) an anionic dispersant; d) a surfactant wetting agent; and e) either 1) an acid or lecithin and optionally, a base, or 2) a preneutralized component.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: June 19, 2001
    Assignee: Nalco Chemical Company
    Inventors: Steven J. Severtson, Martin J. Coffey
  • Patent number: 6113738
    Abstract: Methods for controlling wax and other contaminants by improving the dispersion of these materials through the addition of treatment agents such as plasticizers, dispersants or wetting agents to the process of recycling paper and paperboard are disclosed. Preferred treatment agents include polymeric wetting agents, dispersants, plasticizers and combinations thereof.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: September 5, 2000
    Assignee: Nalco Chemical Company
    Inventors: Steven J. Severtson, Martin J. Coffey