Patents by Inventor Dennis D. Przybycien

Dennis D. Przybycien 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).

  • Method for improving the fillet-forming capability of aluminum vacuum brazing sheet products
    Patent number: 5102033
    Abstract: The fillet-forming ability of brazeable aluminum alloy materials, such as brazing sheet or heat exchanger components, for example fins, tubes and headers, is significantly improved by treating the material, prior to brazing, with an aqueous acid solution containing a dilute mixture of HF and HNO.sub.3. The treatment generally takes place for a period of not less than 5 seconds within the temperature range from about 15 to about 98.degree. C.
    Type: Grant
    Filed: April 16, 1991
    Date of Patent: April 7, 1992
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Ralph A. Woods, Arthur C. Scott, Dennis D. Przybycien