Patents by Inventor Herman Lambertus De Jong

Herman Lambertus De Jong 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).

  • Sensor device
    Patent number: 4116795
    Abstract: Sensor for measuring the oxygen concentration in the exhaust gases of combustion engines, in which zirconium oxide is used as active material. The improvement relates to a composite filter so that the response is great and the contamination at the same time low. For practical applications the life is consequently attractive.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: September 26, 1978
    Assignee: U.S. Philips Corporation
    Inventor: Herman Lambertus De Jong