Patents by Inventor Kanji Kakao

Kanji Kakao 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).

  • Patent number: 4015089
    Abstract: A multi-way speaker system comprising a tweeter, a squawker and a woofer wherein each of the speakers is arranged in staggered relation along their radiating axis at a predetermined spacing from each other and provided with an appropriate crossover network coupled to an input terminal of each of the speaker whereby sound pressure-frequency characteristics of a synthesized sound wave resulting from the synthesis of respective sound waves radiated from respective speakers are rendered flat, and phase frequency characteristics of said synthesized sound wave are rendered linear, over an entire band to improve a waveform transmission characteristic of an overall speaker system.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: March 29, 1977
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinichiro Ishii, Kanji Kakao, Takafumi Ueno, Jun Kimura