Patents by Inventor Cornelis Boutsma

Cornelis Boutsma 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).

  • Electron tube having electrode and insulator components with matched coefficients of expansion
    Patent number: 4998037
    Abstract: An electron tube comprising a stack of at least one perforate plate-shaped insulating element and at least one perforate plate-shaped metal electrode structure, the insulating element comprising a core and being provided with an aluminium layer at least on a side facing the electrode structure, at least the outer layer of the aluminium layer being oxidized, and the coefficients of thermal expansion of the core and the electrode structure being at least substantially equal. In this manner, the thermal stresses occurring between the insulating element and the electrode structure during firing are reduced, so that the risk of their displacement relative to each other is reduced.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: March 5, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Klaas W. Kerkhof, Cornelis Boutsma, Werner D. P. Kauwenberg