Patents by Inventor Geert Jan Naaijer

Geert Jan Naaijer 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).

  • Device for converting solar energy
    Patent number: 4100427
    Abstract: A device is described for converting solar energy into electric power for a load, which device is provided with photocells and electric accumulators. Switching means are provided which at least during starting of the load connect this load to the output terminals of the array of photocells so that during starting the current through the load is determined by the current supplied by the photocells. The device makes efficient use of the available solar radiation, is of simple design and is reliable.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: July 11, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Henri Durand, Geert Jan Naaijer
  • Method and apparatus for increasing the recording capacity of a disk
    Patent number: 4075665
    Abstract: A method of recording and reproducing audio information on a disc shaped record carrier. During recording the audio information is divided into consecutive information segments of a duration .tau..sub.t. Each information segment is subjected to time compression before recording. The duration .tau..sub.t and the time compression are selected so that optimum use is made of the recording capacity of the record carrier without information loss. During reproduction the information segments are subjected to a complementary time expansion and recombined in their original sequence.
    Type: Grant
    Filed: July 7, 1976
    Date of Patent: February 21, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Jean Paul Borne, Geert Jan Naaijer