Patents by Inventor Rudolf Grimmer

Rudolf Grimmer 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).

  • Reactive resin compositions and molded substances made therefrom
    Patent number: 4447564
    Abstract: The compositions are anhydride-hardened epoxy resins which are filled with calcium-magnesium or calcium carbonate particles having a coating of a multibasic organic or inorganic acid bonded to the surfaces of the particles. Castings or moldings made therefrom, particularly electrical parts for SF.sub.6 technology, exhibit improved mechanical properties such as bending strength and impact strength.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: May 8, 1984
    Assignee: Siemens Aktiengesellschaft
    Inventor: Rudolf Grimmer
  • High strength carbonate containing resin composition and its method of manufacture
    Patent number: 4444924
    Abstract: The invention relates to a filled, resin composition and a method for the manufacture therefor. The composition is a matrix of an epoxy resin, a carbonate-containing filler, particularly calcium-magnesium carbonate or calcium carbonate, an anhydride hardener and an adhesive at 0.1 to 3.0 percent by weight, relative to the weight of the filler. The adhesive is a multibasic organic acid, an organic hydroxy acid such as malic acid or an amino acid. In the process, the adhesive can first be added to the hardener or to the filler containing resin before hardener is added.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: April 24, 1984
    Assignee: Siemens Aktiengesellschaft
    Inventor: Rudolf Grimmer