Patents by Inventor Robert L. M. E. Maes

Robert L. M. E. Maes 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 ageing a gas discharge lamp
    Patent number: 4195253
    Abstract: A method for ageing a gas discharge lamp which is provided with a vacuum-tight sealed light-transmissive discharge vessel in which at least two electrodes are disposed and which contains a gas filling. A high-frequency glow discharge is produced in the discharge vessel during a given length of time. The frequency of this discharge preferably has a value between 1 kHz and 100 MHz and the discharge is preferably maintained for 1 to 120 seconds. Ageing results in a considerable reduction in the starting voltage of the lamp.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: March 25, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Peter C. Drop, Walter J. R. de Rop, Robert L. M. E. Maes