Patents by Inventor Hendrik F. Van Den Berg

Hendrik F. Van Den Berg 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 of bonding together two bodies with silicon oxide and practically pure boron
    Patent number: 5054683
    Abstract: A method is set forth of bonding together two bodies (1, 2), according to which a first body (1) is provided with a flat surface (5) and the second body (2) is provided with a silicon oxide layer (4) with a flat surface (6), after which a connecting layer (7) containing boron is provided on at least one of the two flat surfaces. Subsequently, the two bodies (1, 2) are pressed together at elevated temperature, so that a borosilicate glass layer is formed. According to the invention, a layer of practically pure boron is used by way of connecting layer (7). Among the advantages of this is that the composition of the borosilicate glass layer is exclusively determined by the previously chosen layer thicknesses.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: October 8, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Jan Haisma, Gijsbertus Spierings, Joseph G. Van Lierop, Hendrik F. Van Den Berg