Patents by Inventor Johannes S. A. van Hattum

Johannes S. A. van Hattum 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).

  • Line time base in television receiver
    Patent number: 4202013
    Abstract: A line time base in a television receiver including a symmetrical limiter for cutting off the line flyback pulses from which the reference signal for the synchronizing circuit is derived. As a result a slice is obtained whose duration and amplitude is constant and independent of the load on the EHT generator.
    Type: Grant
    Filed: September 24, 1973
    Date of Patent: May 6, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Johannes S. A. van Hattum, Jan A. C. Korver
  • Circuit arrangement including a line deflection circuit
    Patent number: 4162433
    Abstract: A circuit arrangement for combined line deflection and supply voltage stabilization. An EHT winding is wound on the same core as the switched-mode transformer in spite of the fact that different waveforms are present on the various windings of the transformer.
    Type: Grant
    Filed: July 19, 1977
    Date of Patent: July 24, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Johannes S. A. van Hattum, Engelbertus S. P. VAN Veen, Wilhelmus M. Dorn
  • Circuit arrangement for producing a sawtooth current through a line deflection coil in an image display apparatus
    Patent number: RE30074
    Abstract: A circuit arrangement which is the combination of a switched supply circuit and a line deflection circuit, the supply transformer being replaced by a coil.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: August 14, 1979
    Assignee: U.S. Philips Corporation
    Inventor: Johannes S. A. van Hattum