Patents by Inventor Masayoshi Nagayama

Masayoshi Nagayama 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: 10245129
    Abstract: A tooth bleaching device provided with: a production device that produces an active component for bleaching a tooth; a mouthpiece in which a supply opening, through which the active component produced by the production device is supplied inside the oral cavity, is formed; and a connecting part that connects the production device and the mouthpiece.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: April 2, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masayoshi Nagayama, Risa Otsuka
  • Patent number: 10016264
    Abstract: A teeth whitening device includes a generator configured to generate a teeth whitening fluid that whitens teeth and humidified gas, a mouthpiece configured to supply the teeth whitening fluid and the humidified gas, and a coupling part that couples the generator and the mouthpiece with each other. The mouthpiece includes a first supply port through which the teeth whitening fluid is supplied, and a second supply port through which the humidified gas is supplied, the second supply port being separated from the first supply port. The mouthpiece further includes a first supply passage configured to guide the teeth whitening fluid to the first supply port, and a second supply passage configured to guide the humidified gas to the second supply port, the second supply passage being separated from the first supply passage.
    Type: Grant
    Filed: May 25, 2015
    Date of Patent: July 10, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Risa Otsuka, Masayoshi Nagayama
  • Publication number: 20160361149
    Abstract: A teeth whitening device includes a generator configured to generate a teeth whitening fluid that whitens teeth and humidified gas, a mouthpiece configured to supply the teeth whitening fluid and the humidified gas, and a coupling part that couples the generator and the mouthpiece with each other. The mouthpiece includes a first supply port through which the teeth whitening fluid is supplied, and a second supply port through which the humidified gas is supplied, the second supply port being separated from the first supply port. The mouthpiece further includes a first supply passage configured to guide the teeth whitening fluid to the first supply port, and a second supply passage configured to guide the humidified gas to the second supply port, the second supply passage being separated from the first supply passage.
    Type: Application
    Filed: May 25, 2015
    Publication date: December 15, 2016
    Inventors: Risa OTSUKA, Masayoshi NAGAYAMA
  • Publication number: 20160135936
    Abstract: A tooth bleaching device provided with: a production device that produces an active component for bleaching a tooth; a mouthpiece in which a supply opening, through which the active component produced by the production device is supplied inside the oral cavity, is formed; and a connecting part that connects the production device and the mouthpiece.
    Type: Application
    Filed: June 4, 2014
    Publication date: May 19, 2016
    Inventors: Masayoshi NAGAYAMA, Risa OTSUKA
  • Publication number: 20120233791
    Abstract: Provided is a brush body for selectively applying localized currents, for oral care, to oral interstices such as periodontal pockets. Said brush body has a plurality of bristle bundles in a brush head. A bristle bundle contains a bristle having a core and a sheath. The core comprises a conductive member and the sheath comprises an insulating member that covers that core. At the tip portion of the bristle, the core protrudes further than the sheath and acts as an electrode.
    Type: Application
    Filed: December 20, 2010
    Publication date: September 20, 2012
    Applicant: Panasonic Electric Works Co., Ltd
    Inventors: Satoshi Uchida, Masayoshi Nagayama
  • Publication number: 20120233790
    Abstract: A brush body has bristle bundles embedded in a brush head. A bristle contained in the bristle bundles includes a core which consists of a conductive member, and a sheath which consists of an insulating member and covers the core. The core is exposed at the tip portion of the bristle and functions as an electrode for passing current into the mouth. The embedding of the bristle bundles in an electrically conductive base arranged in the brush head electrically connects the core to the base.
    Type: Application
    Filed: December 20, 2010
    Publication date: September 20, 2012
    Applicant: Panasonic Corporation
    Inventors: Satoshi Uchida, Masayoshi Nagayama
  • Patent number: 8145325
    Abstract: A mouth cleaning device includes a head portion provided with bristles and an electrode; and a grip portion provided with an electrode. Further, the mouth cleaning device includes a boosting circuit for boosting an output voltage of a battery serving as a power source and applying the boosted voltage to the electrodes of the head portion and the grip portion; and a current limit circuit for limiting a current flowing from one electrode to the other via a human body.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: March 27, 2012
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Shinichi Taniguchi, Suehisa Kishimoto, Tomohiro Kunita, Hiroaki Shimizu, Atsushi Takahashi, Masayoshi Nagayama, Yumi Hanato, Wataru Sanematsu, Yukihiro Masuda
  • Publication number: 20110304194
    Abstract: A brush body of a toothbrush includes bristle bundles, each formed by a plurality of filaments. Each filament includes a core, which contains a conductive material, and an insulative sheath, which covers a side of the core. Each bristle bundle includes a basal portion at which basal ends of the cores are fused, solidified, and integrated with one another. The bristle bundle also includes a distal portion, which is formed by a distal end of each core. A ratio of the conductive material at the basal portion is equal to a ratio of the conductive material at the distal portion.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 15, 2011
    Applicant: Panasonic Electric Works Co., Ltd.
    Inventors: Satoshi Uchida, Masayoshi Nagayama
  • Publication number: 20110232014
    Abstract: A brush body and toothbrush that allows for current to easily flow from conductive bristles to oral tissues or enhance ionization of electrolytic medicinal components. The brush body includes a mixed bristle bundle arranged on an anchoring surface and including a plurality of conductive bristles and a plurality of insulative bristles. A reference plane is set on the anchoring surface. The conductive bristles have a height from the reference plane, and the insulative bristles have a height from the reference plane that differs from the height of the conductive bristles.
    Type: Application
    Filed: March 25, 2011
    Publication date: September 29, 2011
    Applicant: Panasonic Electric Works Co., LTD.
    Inventors: Satoshi Uchida, Masayoshi Nagayama
  • Publication number: 20080086189
    Abstract: A mouth cleaning device includes a head portion provided with bristles and an electrode; and a grip portion provided with an electrode. Further, the mouth cleaning device includes a boosting circuit for boosting an output voltage of a battery serving as a power source and applying the boosted voltage to the electrodes of the head portion and the grip portion; and a current limit circuit for limiting a current flowing from one electrode to the other via a human body.
    Type: Application
    Filed: October 3, 2007
    Publication date: April 10, 2008
    Applicant: Matsushita Electric Works, Ltd.
    Inventors: Shinichi Taniguchi, Suehisa Kishimoto, Tomohiro Kunita, Hiroaki Shimizu, Atsushi Takahashi, Masayoshi Nagayama, Yumi Hanato, Wataru Sanematsu, Yukihiro Masuda
  • Patent number: 4372319
    Abstract: A low frequency therapeutic instrument of the present invention which performs therapies by applying low frequency pulses to a human body can automatically elevate the voltage of low frequency output gradually from a low voltage by detecting contact connections with a patient of an output terminal for applying a low frequency to the patient so as to reduce any shock to the patient at the time of starting the therapy.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: February 8, 1983
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tsutomu Ichinomiya, Mamoru Hosoe, Masayoshi Nagayama, Hirotaka Chousa, Rokusaburo Kimura