Patents by Inventor Masashi Kawamura

Masashi Kawamura 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: 9921501
    Abstract: A toner having a toner particle which contains a binder resin, a fatty acid metal salt, and a resin having an ionic functional group, in which the fatty acid metal salt is a fatty acid metal salt of a polyvalent metal with valency of 2 or higher and a fatty acid with carbon atom number of at least 8 and not more than 28, and the acid dissociation constant pKa of the resin having an ionic functional group is at least 6.0 and not more than 9.0.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: March 20, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shinsuke Mochizuki, Kenichi Nakayama, Masashi Kawamura, Tsuneyoshi Tominaga, Kunihiko Nakamura, Tsutomu Shimano, Takayuki Toyoda, Shiro Kuroki
  • Patent number: 9857711
    Abstract: Provided is a toner including toner particles each containing: a binder resin, a crystalline polyester, and a colorant, in which: the colorant includes a compound represented by the following formula (1); and the binder resin and the crystalline polyester satisfy the following formula (2): in the formula (1), R1, R2, and R3 each independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and Ar represents an aryl group. ?SP=|SP1?SP2|?0.43??Formula (2).
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: January 2, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yu Yoshida, Masashi Kawamura, Yuhei Terui, Takayuki Toyoda, Takeshi Sekiguchi
  • Patent number: 9834683
    Abstract: The present invention provides a compound and a pigment dispersant, each of which improves the dispersibility of various types of pigments in a non-aqueous solvent and also provides a pigment composition, a pigment dispersion, and a toner, each of which has a preferable coloring power. The compound includes a polymer which has a monomer unit having a specific structure and also includes a specific partial structure.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: December 5, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chiaki Nishiura, Yuki Tsujii, Yasuaki Murai, Takayuki Toyoda, Waka Hasegawa, Masanori Seki, Masashi Kawamura, Masashi Hirose, Ayano Mashida
  • Patent number: 9829814
    Abstract: A toner having a toner particle that contains a binder resin, a pigment, a pigment dispersant, and a crystalline polyester, wherein the pigment dispersant has a specific pigment adsorption segment and a polymer moiety and a hydrophobic parameter HP1 for the pigment dispersant and a hydrophobic parameter HP2 for the crystalline polyester satisfy the formula ?0.28?(HP1?HP2)?0.15.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: November 28, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yu Yoshida, Yuhei Terui, Haruko Kubo, Masashi Kawamura, Yasuaki Murai, Takayuki Toyoda
  • Publication number: 20170299972
    Abstract: A toner having a toner particle containing a binder resin and a crystalline material, wherein when “a” is an endothermic quantity deriving from the crystalline material in a DSC of the toner and “b” is an endothermic quantity deriving from the crystalline material in a DSC of the toner that has been held for 10 hours in an environment with a temperature of 55° C. and a humidity of 8% RH, the “a” and “b” satisfy a relationship a/b?0.85; in a dynamic viscoelastic measurement of a non-melt-molded pellet of the toner, the toner has a temperature range A for which G??1×105 Pa and tan ?<1 are satisfied; and in a dynamic viscoelastic measurement of a melt-molded pellet of the toner, the toner has a temperature range B for which tan ?>1 is satisfied within the temperature range A.
    Type: Application
    Filed: April 13, 2017
    Publication date: October 19, 2017
    Inventors: Masatake Tanaka, Nobuhisa Abe, Hidekazu Fumita, Masashi Kawamura, Shiro Kuroki, Kenji Ookubo
  • Publication number: 20170269488
    Abstract: A toner having a toner particle which contains a binder resin, a fatty acid metal salt, and a resin having an ionic functional group, in which the fatty acid metal salt is a fatty acid metal salt of a polyvalent metal with valency of 2 or higher and a fatty acid with carbon atom number of at least 8 and not more than 28, and the acid dissociation constant pKa of the resin having an ionic functional group is at least 6.0 and not more than 9.0.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 21, 2017
    Inventors: Shinsuke Mochizuki, Kenichi Nakayama, Masashi Kawamura, Tsuneyoshi Tominaga, Kunihiko Nakamura, Tsutomu Shimano, Takayuki Toyoda, Shiro Kuroki
  • Publication number: 20170263336
    Abstract: According to one embodiment, a memory includes a magnetoresistive element, a reference cell, a sense amplifier comparing a first current flowing in the magnetoresistive element with a second current flowing in the reference cell, a first transistor having a first control terminal controlling a value of the first current, a second transistor having a second control terminal controlling a value of the second current, and a controller applying a first potential to the first control terminal and a second potential to the second control terminal in a first operation, and applying the first potential to the first control terminal and a third potential larger than the second potential to the second control terminal in a second operation.
    Type: Application
    Filed: September 15, 2016
    Publication date: September 14, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiko NAKAYAMA, Masashi KAWAMURA, Katsuhiko HOYA, Mikio MIYATA, Minoru AMANO
  • Publication number: 20170225206
    Abstract: Systems, apparatus, methods, and articles of manufacture provide for cleaning a mobile device and other types of portable user devices. In one embodiment, a controller of a mobile device cleaning system may control a sterilization device for cleaning a mobile device (e.g., a phone). In one embodiment, one or more display devices may provide information to observers during a cleaning process.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 10, 2017
    Inventors: Andrew Deitchman, Masashi Kawamura, Jamie Carreiro
  • Publication number: 20170213498
    Abstract: “A wearable device, such as a wristband device with an art showing function, comprises a data communication device for receiving art data and a display device. In addition the device comprises also a data processing and controlling unit, which is configured to instruct said display device to show said art based on said received art data.
    Type: Application
    Filed: July 23, 2014
    Publication date: July 27, 2017
    Applicant: WHAT WATCH AG
    Inventors: Igor Basargin, Masashi Kawamura
  • Publication number: 20170212478
    Abstract: A wristwatch device with a time management function for displaying a schedule in the wristwatch device comprising a data communication device for receiving time management data from an outer device comprising database of time management data. The wristwatch device comprises also a display device having indication means, e.g. segments for indicating periods of time or timely arranged events, like calendar bookings. Further the wristwatch device comprises also a data controlling unit configured to read said received time management data and thereby manipulate said indication means of the display device in order to indicate events of time based on said received time management data.
    Type: Application
    Filed: July 22, 2015
    Publication date: July 27, 2017
    Applicant: WHAT WATCH AG
    Inventors: Igor Basargin, Masashi Kawamura
  • Patent number: 9625845
    Abstract: The present invention provides a compound capable of improving the dispersibility of yellow, magenta, cyan, and black pigments in a water-insoluble solvent and a pigment-dispersing agent. The present invention also provides a pigment composition, a pigment dispersion, and a toner, which have satisfactory tinting strength. The present invention relates to a compound having a structure in which an azo skeleton structure is bound to a polymer portion via a linking group in the azo skeleton structure.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: April 18, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ayano Mashida, Yasuaki Murai, Waka Hasegawa, Masanori Seki, Takayuki Toyoda, Masashi Kawamura, Chiaki Nishiura, Yuki Tsujii, Taiki Watanabe, Masashi Hirose
  • Patent number: 9593243
    Abstract: Provided is a compound that improves dispersibility of a pigment in a non-water-soluble solvent, and a pigment dispersing agent, a pigment composition, a pigment dispersion and a toner that use that compound. The present invention relates to a compound in which a polymer and a monoazo compound having a specific structure are bonded. The present invention further relates to a pigment dispersing agent, a pigment composition, a pigment dispersion and a toner containing that compound.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: March 14, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuki Tsujii, Yasuaki Murai, Takayuki Toyoda, Waka Hasegawa, Masanori Seki, Chiaki Nishiura, Masashi Kawamura, Masashi Hirose, Ayano Mashida
  • Publication number: 20160349646
    Abstract: Provided is a toner including toner particles each containing: a binder resin, a crystalline polyester, and a colorant, in which: the colorant includes a compound represented by the following formula (1); and the binder resin and the crystalline polyester satisfy the following formula (2): in the formula (1), R1, R2, and R3 each independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and Ar represents an aryl group. ?SP=|SP1?SP2|?0.
    Type: Application
    Filed: May 9, 2016
    Publication date: December 1, 2016
    Inventors: Yu Yoshida, Masashi Kawamura, Yuhei Terui, Takayuki Toyoda, Takeshi Sekiguchi
  • Patent number: 9470995
    Abstract: To provide an azo compound which improves the dispersibility of an azo pigment in a non-water soluble solvent. The purpose is achieved by an azo compound having a specific structure in which a high molecular weight polymer unit is bonded.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: October 18, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Seki, Yuki Hasegawa, Waka Hasegawa, Masashi Kawamura, Taiki Watanabe, Chiaki Nishiura, Takayuki Toyoda, Ayano Mashida, Yasuaki Murai, Masashi Hirose
  • Publication number: 20160280925
    Abstract: The present invention provides a compound capable of improving the dispersibility of color pigments in a water-insoluble solvent; and a pigment-dispersing agent. The present invention also provides a pigment composition, a pigment dispersion, and a toner, which have satisfactory tinting strength. The present invention provides the compound containing a polymer having a monomer unit having a specific chemical structure, the compound having a moiety also having a specific structure.
    Type: Application
    Filed: August 27, 2014
    Publication date: September 29, 2016
    Inventors: Masashi Kawamura, Yasuaki Murai, Kosuke Mukumoto, Yuki Tsujii, Ayano Mashida, Waka Hasegawa, Masanori Seki, Takayuki Toyoda, Chiaki Nishiura, Masashi Hirose
  • Publication number: 20160262462
    Abstract: Systems, apparatus, methods, and articles of manufacture provide for an electronic garment comprising a plurality of lights that may be controlled to display various types of images and messages. In one embodiment, the electronic garment is configured to be worn by a four-legged animal, such as a dog.
    Type: Application
    Filed: March 14, 2016
    Publication date: September 15, 2016
    Inventors: Masashi Kawamura, Jamie Carreiro, Qanta Shimizu, Eiji Muriochi, Jamie Nami Kim
  • Patent number: D771506
    Type: Grant
    Filed: August 9, 2014
    Date of Patent: November 15, 2016
    Inventors: Igor Basargin, Masashi Kawamura, Daniel Julier
  • Patent number: D773319
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: December 6, 2016
    Inventors: Igor Basargin, Masashi Kawamura, Daniel Julier
  • Patent number: D787547
    Type: Grant
    Filed: August 9, 2014
    Date of Patent: May 23, 2017
    Inventors: Igor Basargin, Masashi Kawamura, Daniel Julier
  • Patent number: D787548
    Type: Grant
    Filed: August 9, 2014
    Date of Patent: May 23, 2017
    Inventors: Igor Basargin, Masashi Kawamura, Daniel Julier