Patents by Inventor Tomoko Umezawa

Tomoko Umezawa 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: 6451327
    Abstract: The invention relates to a substantially nonaqueous skin cleansing composition comprising a granulated product obtained by granulating particles of a surfactant selected from the group consisting of nonionic surfactants, amphoteric surfactants and anionic surfactants with a binder. The composition scarcely causes damage to and itch on the skin, can give an effective massaged feeling and has excellent cleanability.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: September 17, 2002
    Assignee: Kao Corporation
    Inventors: Kiyoko Nakagaki, Masaaki Moriyama, Hiroe Tanahashi, Tomoko Umezawa, Hideyuki Hanazawa
  • Patent number: 5151941
    Abstract: A digital signal encoding apparatus in which input digital signals are divided into a plurality of frequency bands so that the bandwidth of each frequency band will be greater the higher the frequency band, the allowable noise level is set for each frequency band on the basis of the energy value of each frequency band, and components of each frequency band are quantized with the number of bits consistent with the level difference between the energy of each frequency band and the preset allowable noise level. The output information volume following the quantization is detected and the number of bits of allocation for quantization is corrected in dependence upon the error between the detection output and the target value to render the information volume constant over a predetermined time period to enable bit rate adjustment or bit packing with lesser signal deterioration by a simplified construction.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: September 29, 1992
    Assignee: Sony Corporation
    Inventors: Masayuki Nishiguchi, Yoshihito Fujiwara, Tomoko Umezawa
  • Patent number: 5115240
    Abstract: This invention relates to a digital signal encoding apparatus in which the width of the range in selected to be wider for the higher frequency range of the digital signals divided into a plurality of regions and in which the encoded signals are synthesized for the respective ranges, wherein encoding is controlled as a function of the output detecting the characteristics of the components of the divided frequency ranges and the detection time interval is selected to be longer for the lower frequency to enable more efficient encoding to be performed as a function of the properties of input digital signals.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: May 19, 1992
    Assignee: Sony Corporation
    Inventors: Yoshihito Fujiwara, Tomoko Umezawa, Masayuki Nishiguchi, Makoto Akune, Naoto Iwahashi, Kenzo Akagiri
  • Patent number: RE36559
    Abstract: This invention relates to a digital signal encoding apparatus in which the .[.width of the range in.]. .Iadd.digital signal is divided into frequency components in plural frequency bands and the bandwidth of the frequency bands is .Iaddend.selected to be wider for .[.the.]. higher .[.frequency range.]. .Iadd.frequencies .Iaddend.of the digital .[.signals divided into a plurality of regions.]. .Iadd.signal .Iaddend.and in which the encoded signals are synthesized for the respective .[.ranges.]. .Iadd.frequency bands .Iaddend.wherein encoding is controlled as a function of the output detecting the characteristics of the .Iadd.frequency .Iaddend.components .[.of.]. .Iadd.in .Iaddend.the .[.divided.]. frequency .Iadd.bands .Iaddend.and the detection time interval is selected to be longer for the lower frequency .Iadd.bands .Iaddend.to enable more efficient encoding to be performed as a function of the properties of input digital signals.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: February 8, 2000
    Assignee: Sony Corporation
    Inventors: Yoshihito Fujiwara, Tomoko Umezawa, Masayuki Nishiguchi, Makoto Akune, Naoto Iwahashi, Kenzo Akagiri