Patents by Inventor Mark S. Schulte

Mark S. Schulte 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).

  • Reactivity drift and catalyst degradation in polyurethane foam
    Patent number: 10385177
    Abstract: The invention is directed to methods of preparing compositions used to manufacture polyurethane foams. The invention provides methods for making compositions used to make polyurethane foams that include amine catalysts, but formulated such that catalytic potency is not diminished over time before the forming of a foam.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: August 20, 2019
    Assignee: Foam Supplies, Inc.
    Inventors: David G. Keske, David L. Modray, Mark S. Schulte, Timothy T. Kalinowski
  • Rigid foams using CHCLF.sub.2 as a blowing agent
    Patent number: 5274007
    Abstract: A method for preparation of rigid foam disclosed The method comprises mixing at least two components to form a reaction mixture. The reaction mixture comprises isocyanate, up to about 20% by weight CHClF.sub.2, up to about 2% by weight of water, and a combination of polyols having an overage OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms. Related methods and compositions are also disclosed.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: December 28, 1993
    Assignee: Foam Supplies, Inc.
    Inventors: David G. Keske, Mark S. Schulte
  • Rigid foams, methods for preparation thereof and compositions useful in methods and preparations thereof
    Patent number: 5194175
    Abstract: A method for preparation of rigid foam disclosed. The method comprises mixing at least two components to form a reaction mixture. The reaction mixture comprises isocyanate, up to about 20% by weight CHClF.sub.2, up to about 2% by weight of water, and a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms. Related methods and compositions are also disclosed.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: March 16, 1993
    Assignee: Foam Supplies, Inc.
    Inventors: David G. Keske, Mark S. Schulte
  • Rigid foams using CHClF.sub.2 as a blowing agent
    Patent number: 5032623
    Abstract: A method for preparation of rigid foam disclosed. The method comprises mixing at least two components to form a reaction mixture. The reaction mixture comprises isocyanate, up to about 20% by weight CHClF.sub.2, up to about 2% by weight of water, and a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms. Related methods and compositions are also disclosed.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: July 16, 1991
    Assignee: Foam Supplies, Inc.
    Inventors: David G. Keske, Mark S. Schulte