Patents by Inventor Carl Neil Berglund

Carl Neil Berglund 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).

  • Complementary input structure for charge coupled device
    Patent number: 4099197
    Abstract: An input structure for a charge coupled device (CCD) which develops a charge proportional to a signal in one channel, and the complement of that charge in a second channel. The dual channel CCD can be used in transversal filter applications without the need for a differential amplifier at its output.
    Type: Grant
    Filed: August 12, 1976
    Date of Patent: July 4, 1978
    Assignee: Northern Telecom Limited
    Inventors: Abd-El-Fattah Ali Ibrahim, Carl Neil Berglund