Patents by Inventor Bruno Wilhelm

Bruno Wilhelm 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).

  • Binding medium and ceramic shell composition for a precision casting-mold
    Patent number: 4080214
    Abstract: The binding medium employs a mixture of ethyl silicate, anhydrous solvent and organo-functional hydrophilic silicon compounds containing at least one carbon-fixed amino group. The binding medium is capable of absorbing humidity from the air to bring about hydrolysis. The binding medium is also capable of unlimited durability if stored in an air-free dry condition. A hydrophilic alcoholate of titanium may also be added to the mixture to improve hydrolysis and gelling. The binder is mixed with a refractory ceramic filler to form a ceramic shell composition.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: March 21, 1978
    Assignee: Sulzer Brothers Ltd.
    Inventor: Bruno Wilhelm