Patents by Inventor Horst Siedel

Horst Siedel 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).

  • Fire-resistant glazing
    Patent number: 5990023
    Abstract: Use is made, for the manufacture of fire-resistant glazings of the G fire-resistance classes, comprising panes made of glass toughened by the thermal route by means of a conventional toughening plant and possessing safety glass properties, of glasses which exhibit a thermal expansion coefficient .alpha..sub.20-300 of between 6 and 8.5.times.10.sup.-6 K.sup.-1, a thermal stress factor .phi. of between 0.5 and 0.8N/(mm.sup.2.K), a softening point of between 750 and 830.degree. C. and a transformation point of at the very most 1190.degree. C.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: November 23, 1999
    Assignee: Vetrotech Saint-Gobain International AG
    Inventors: Horst Siedel, Claude Morin, Pierre Jeanvoine