Patents by Inventor Masaaki Takahama

Masaaki Takahama 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).

  • Frequency converter, especially CATV converter
    Patent number: 4569084
    Abstract: A CATV converter of a dual frequency conversion type is constructed in a chassis divided into compartments for accommodating respective stages between the input and output terminals. The primary and secondary local oscillators are disposed apart with other compartments interposed therebetween thereby to enhance the input to output isolation.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: February 4, 1986
    Assignee: NEC Kansai, Ltd.
    Inventor: Masaaki Takahama