Patents by Inventor Makoto Funatsu

Makoto Funatsu 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).

  • Clock generating method and clock generating circuit
    Patent number: 7580443
    Abstract: In a clock generating circuit, while a PLL (Phase-Locked Loop) circuit and a modulator are employed, when a frequency dividing ratio of a feedback-purpose frequency divider in the PLL circuit is changed in accordance with modulation data produced based upon a modulation profile of the modulator to perform a frequency modulation so as to spread a spectrum, a turning point of the modulation profile is moved so as to disperse a degree of frequency, so that the spread spectrum is re-spread. Also, a clock generating circuit is constituted by a PLL circuit and a modulator, a multiple modulation profile generating circuit is provided in the modulator, and a turning point of a modulation profile is moved so as to disperse a degree of frequency, so that a spread spectrum is re-spread.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: August 25, 2009
    Assignee: Renesas Technology Corp.
    Inventors: Yasuhiro Uemura, Takashi Nakamura, Akio Katsushima, Makoto Funatsu
  • Clock generating method and clock generating circuit
    Publication number: 20060176933
    Abstract: In a clock generating circuit, while a PLL (Phase-Locked Loop) circuit and a modulator are employed, when a frequency dividing ratio of a feedback-purpose frequency divider in the PLL circuit is changed in accordance with modulation data produced based upon a modulation profile of the modulator to perform a frequency modulation so as to spread a spectrum, a turning point of the modulation profile is moved so as to disperse a degree of frequency, so that the spread spectrum is re-spread. Also, a clock generating circuit is constituted by a PLL circuit and a modulator, a multiple modulation profile generating circuit is provided in the modulator, and a turning point of a modulation profile is moved so as to disperse a degree of frequency, so that a spread spectrum is re-spread.
    Type: Application
    Filed: January 13, 2006
    Publication date: August 10, 2006
    Inventors: Yasuhiro Uemura, Takashi Nakamura, Akio Katsushima, Makoto Funatsu
  • Process for preparing polyurethane foams
    Patent number: 3953384
    Abstract: A process for preparing polyurethane foams by the reaction between a polyol having at least two active hydrogen atoms and a polyisocyanate, in the presence of a potassium .beta.-tertiary-aminopropionate as a catalyst.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: April 27, 1976
    Assignee: Kao Soap Co., Ltd.
    Inventors: Makoto Funatsu, Shinichiro Yasuda, Toshimitu Hiraizumi