Patents by Inventor Bertold E. Meier

Bertold E. Meier 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).

  • Binder mixture
    Patent number: 5304225
    Abstract: Mixtures consisting of a phenolic resin, a hardener, and residues from bisphenol-A production in the ratio of 1:9 to 9:1 are used for the production of binder mixtures for thermostable molding materials. Usable for said purpose are binders with a minimum content of phenolic resin of 10%.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: April 19, 1994
    Assignee: Rutgerswerke AG
    Inventors: Arno Gardziella, Karl-Heinz Schwieger, Peter Adolphs, Josef Suren, Bertold E. Meier