Patents by Inventor Jan J. Zwinselman

Jan J. Zwinselman 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).

  • Solvent system
    Patent number: 5407977
    Abstract: An essentially water-free solvent system comprising methoxy acetone and an organic protic solvent is useful as a solvent fora) a curing agent for an epoxy resin and/orb) a curing catalyst and/orc) a cure inhibitor.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: April 18, 1995
    Assignee: The Dow Chemical Company
    Inventors: John P. Everett, Jan J. Zwinselman
  • Solvent system
    Patent number: 5342865
    Abstract: A solvent system contains methoxy acetone, water and, optionally, an oxygen-containing solvent other than methoxy acetone, such as a propylene glycol monoether or diether. The solvent system is a useful solvent for a curing agent for an epoxy resin, a curing catalyst and/or a cure inhibitor. A solution of the curing agent, the curing catalyst and/or the cure inhibitor in the solvent system can be mixed with an epoxy resin, optionally dissolved in a solvent, for producing a one-component epoxy resin composition.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: August 30, 1994
    Assignee: The Dow Chemical Company
    Inventors: Jan J. Zwinselman, John P. Everett, Karin Wanzl-Dacho