Patents by Inventor Guide F. Smits

Guide F. Smits 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).

  • Foaming system for rigid urethane and isocyanurate foams
    Patent number: 4945119
    Abstract: This invention relates to rigid closed-celled polyisocyanate-based foams exhibiting improved dimensional stability and a process for their preparation. In particular, it relates to foams containing within their cells, when initially prepared, a gas mixture comprising theoretically from about 5 to 70 mole percent carbon dioxide and from about 40 to about 95 mole percent of an organic compound mixture.The organic compound mixture itself, comprises (a) from 40 to 95 mole percent of an organic compound having a boiling point greater than or equal to about 283K, and (b) from 5 to 60 mole percent of an organic compound having a boiling point equal to or less than about 266K. Halocarbons are the preferred organic compounds for components (a) and (b).
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: July 31, 1990
    Assignee: The Dow Chemical Company
    Inventors: Guide F. Smits, Henri J. M. Grunbauer