Patents by Inventor Kazuaki Tabata

Kazuaki Tabata 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: 9216909
    Abstract: An aerogel with excellent thermal insulation performance, average particle size of 1 to 20 ?m and globular shape; and a method of manufacturing it efficiently, is provided. The aerogel has specific surface area by BET method of 400 to 1000 m2/g; pore volume and peak pore radius by BJH method of 3 to 8 mL/g and 10 to 30 nm, respectively; average particle size and average circularity by image analysis method of 1 to 20 ?m and no less than 0.8, respectively. The method includes the steps of: preparing an aqueous silica sol; dispersing the sol into a hydrophobic solvent, thereby forming a W/O emulsion; causing gelation of the sol, thereby converting the emulsion into a dispersion of a gel; replacing water in the gel with a solvent having a small surface tension; treating the gel with a hydrophobing agent; and removing the solvent used in the solvent replacement.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: December 22, 2015
    Assignee: TOKUYAMA CORPORATION
    Inventors: Tadahiro Fukuju, Hiroshi Numa, Kazuaki Tabata
  • Patent number: 8905339
    Abstract: Provided is a liquid developer-preparing apparatus preparing a liquid developer obtained by dispersing toner particles in a liquid, the apparatus including, a tank that stores a dispersion including a liquid and toner particles, a pulverizing device that pulverizes the toner particles in the dispersion sent from the tank; a liquid-sending route in which the dispersion circulates between the tank and the pulverizing device, a liquid-sending device that is provided to the liquid-sending route and sends the dispersion, a pressure gauge that is provided to the liquid-sending route and measures a liquid-sending pressure of the dispersion, and a determination device that determines whether or not the toner particles in the dispersion have been pulverized to a target volume average particle size.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: December 9, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuaki Tabata, Hiroyuki Moriya
  • Patent number: 8721992
    Abstract: A micro fluidic device comprises a micro channel in which a plurality of fluids form laminar flows and are supplied, wherein an inner wall of the micro channel comprise a protruding part that is substantially parallel to the flows of the fluids and protrudes in directions substantially vertical to interfaces formed by the plurality of fluids.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: May 13, 2014
    Assignee: Fuji Xerox Co., Ltd
    Inventors: Takayuki Yamada, Masaki Hirota, Kazuaki Tabata, Seiichi Takagi
  • Patent number: 8679336
    Abstract: A microchannel device is provided, the microchannel device containing a microfluidic channel including a sub fluidic channel in which at least one filtration diaphragm is provided, wherein the microfluidic channel has at least a supply port, a first discharge port and a second discharge port, the supply port and the first discharge port are connected through the filtration diaphragm, the supply port and the second discharge port are connected without the filtration diaphragm, and the filtration diaphragm is provided parallel to a fluidic channel direction of the microfluidic channel.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: March 25, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuya Hongo, Takayuki Yamada, Seiichi Takagi, Hiroshi Kojima, Masaki Hirota, Kazuaki Tabata, Tetsuo Ohta
  • Patent number: 8667673
    Abstract: A method for fabricating a laminated structure includes (i) preparing a first substrate having electroconductivity, (ii) forming a first electroconductive film having a prescribed hardness on the first substrate by an electroforming, (iii) forming a second electroconductive film having a hardness that is lower than the prescribed hardness on the first electroconductive film by an electroforming, (iv) patterning the first electroconductive film and the second electroconductive film to a prescribed pattern to form a plurality of electroconductive film patterns, and (v) subjecting the first substrate and a second substrate repeatedly to pressure contact and release to transfer sequentially the plurality of electroconductive film patterns on the first substrate onto the second substrate.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: March 11, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takayuki Yamada, Kazuaki Tabata
  • Publication number: 20130186991
    Abstract: Provided is a liquid developer-preparing apparatus preparing a liquid developer obtained by dispersing toner particles in a liquid, the apparatus including, a tank that stores a dispersion including a liquid and toner particles, a pulverizing device that pulverizes the toner particles in the dispersion sent from the tank; a liquid-sending route in which the dispersion circulates between the tank and the pulverizing device, a liquid-sending device that is provided to the liquid-sending route and sends the dispersion, a pressure gauge that is provided to the liquid-sending route and measures a liquid-sending pressure of the dispersion, and a determination device that determines whether or not the toner particles in the dispersion have been pulverized to a target volume average particle size.
    Type: Application
    Filed: July 9, 2012
    Publication date: July 25, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kazuaki TABATA, Hiroyuki MORIYA
  • Publication number: 20130189521
    Abstract: An aerogel with excellent thermal insulation performance, average particle size of 1 to 20 ?m and globular shape; and a method of manufacturing it efficiently, is provided. The aerogel has specific surface area by BET method of 400 to 1000 m2/g; pore volume and peak pore radius by BJH method of 3 to 8 mL/g and 10 to 30 nm, respectively; average particle size and average circularity by image analysis method of 1 to 20 ?m and no less than 0.8, respectively. The method includes the steps of: preparing an aqueous silica sol; dispersing the sol into a hydrophobic solvent, thereby forming a W/O emulsion; causing gelation of the sol, thereby converting the emulsion into a dispersion of a gel; replacing water in the gel with a solvent having a small surface tension; treating the gel with a hydrophobing agent; and removing the solvent used in the solvent replacement.
    Type: Application
    Filed: October 24, 2011
    Publication date: July 25, 2013
    Applicant: TOKUYAMA CORPORATION
    Inventors: Tadahiro Fukuju, Hiroshi Numa, Kazuaki Tabata
  • Patent number: 8418719
    Abstract: A microchannel device includes; a microchannel that forms two or more different fluids as a multiphase flow, and a section shape of the multiphase flow having in at least one portion a first shape in which plural polygons are two-dimensionally arranged, and adjacent to one another, a second shape in which a polygon is inscribed in one of a circle and an ellipse, or circumscribes one of a circle and an ellipse, or a third shape in which at least plural circles and polygons are two-dimensionally arranged, and adjacent to one another.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: April 16, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuaki Tabata, Takayuki Yamada, Masaki Hirota
  • Patent number: 8360243
    Abstract: A liquid transporting apparatus includes: a microchannel; a transporting liquid supply port through which transporting liquid is supplied to the microchannel; a partition wall as defined herein, and that has an opening; a first split channel that is provided on an upper side of the partition wall; a second split channel that is provided on a lower side of the partition wall; a particle dispersion supply port through which a particle dispersion is supplied to a middle portion of a width direction of the first split channel; and at least one drain port through which the fluid is discharged from downstreams of the first and second split channels, and a pattern that generates an upward-directed flow with respect to a vertical direction in a middle portion of a section of the microchannel is formed in an inner wall of the microchannel or in the partition wall.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: January 29, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takayuki Yamada, Hiroshi Kojima, Kazuaki Tabata, Masaki Hirota, Kazuya Hongo
  • Patent number: 8349273
    Abstract: A microreactor device comprises: a microchannel that sends one or more fluids; and a section that isolates vibrations to a first portion of the microchannel.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: January 8, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuaki Tabata, Yoshihisa Yamazaki, Masaki Hirota, Takayuki Yamada, Daisuke Nagao
  • Patent number: 7993934
    Abstract: A reaction method using a microreactor, comprises: forming, in a microchannel, an at least two-layered laminar flow in n kinds (n is an integer of 3 or more) of a fluid 1, a fluid 2, . . . , and a fluid n at least two kinds of which are mutually incompatible; and pulsating at least one kind of the fluids.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: August 9, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuaki Tabata, Masaki Hirota, Takayuki Yamada
  • Publication number: 20110168210
    Abstract: A micro-nano bubble generating method comprises: introducing a liquid into a microchannel, in which the microchannel is defined by a microchannel wall an entirety or a portion of which is formed by a porous wall having through pores with radii of 10 to 1,000 nm; and supplying a gas directly into the microchannel from outside the porous wall by a pressurized-gas supplying section, to allow micro-nano bubbles to be contained in the liquid.
    Type: Application
    Filed: August 22, 2008
    Publication date: July 14, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kazuaki TABATA, Masato MIKAMI, Masaki HIROTA
  • Publication number: 20110073530
    Abstract: A liquid transporting apparatus includes: a microchannel; a transporting liquid supply port through which transporting liquid is supplied to the microchannel; a partition wall as defined herein, and that has an opening; a first split channel that is provided on an upper side of the partition wall; a second split channel that is provided on a lower side of the partition wall; a particle dispersion supply port through which a particle dispersion is supplied to a middle portion of a width direction of the first split channel; and at least one drain port through which the fluid is discharged from downstreams of the first and second split channels, and a pattern that generates an upward-directed flow with respect to a vertical direction in a middle portion of a section of the microchannel is formed in an inner wall of the microchannel or in the partition wall.
    Type: Application
    Filed: March 24, 2010
    Publication date: March 31, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takayuki YAMADA, Hiroshi KOJIMA, Kazuaki TABATA, Masaki HIROTA, Kazuya HONGO
  • Publication number: 20100282397
    Abstract: A laminated structure includes: a plurality of first electroconductive films each having a prescribed hardness; and a plurality of second electroconductive films each having a hardness that is lower than the prescribed hardness. The first and second electroconductive films are laminated alternately.
    Type: Application
    Filed: July 21, 2010
    Publication date: November 11, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takayuki YAMADA, Kazuaki TABATA
  • Patent number: 7799414
    Abstract: A laminated structure includes: a plurality of first electroconductive films each having a prescribed hardness; and a plurality of second electroconductive films each having a hardness that is lower than the prescribed hardness. The first and second electroconductive films are laminated alternately.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: September 21, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takayuki Yamada, Kazuaki Tabata
  • Patent number: 7770738
    Abstract: A classifying device for classifying particles using a centrifugal force contains a microchannel includes a curved portion including a first tubular channel and a second tubular channel; and a diaphragm that is provided within the curved portion, and that is located at a position between the first tubular channel and the second tubular channel; and wherein the diaphragm has at least a first apertured group formed in a central region of the diaphragm and a second apertured group formed in a first end region and a second end region of the diaphragm, the first apertured group and the second apertured group communicate the first tubular channel with the second tubular channel along a direction of the centrifugal force, the first apertured group has a mesh, and the second apertured group has a mesh that is different in size from the mesh of the first apertured group.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: August 10, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuaki Tabata, Hiroshi Kojima, Kazuya Hongo, Takayuki Yamada, Seiichi Takagi, Tetsuo Ohta, Masaki Hirota
  • Publication number: 20100122957
    Abstract: A microchannel device is provided, the microchannel device containing a microfluidic channel including a sub fluidic channel in which at least one filtration diaphragm is provided, wherein the microfluidic channel has at least a supply port, a first discharge port and a second discharge port, the supply port and the first discharge port are connected through the filtration diaphragm, the supply port and the second discharge port are connected without the filtration diaphragm, and the filtration diaphragm is provided parallel to a fluidic channel direction of the microfluidic channel.
    Type: Application
    Filed: April 13, 2009
    Publication date: May 20, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kazuya HONGO, Takayuki YAMADA, Seiichi TAKAGI, Hiroshi KOJIMA, Masaki HIROTA, Kazuaki TABATA, Tetsuo OHTA
  • Patent number: 7708950
    Abstract: A microfluidic device includes a processing layer and a temperature control layer. The processing layer applies a predetermined process to a subject fluid. The temperature control layer is disposed adjacent to the processing layer to give a predetermined temperature environment to the processing layer.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: May 4, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takayuki Yamada, Kazuaki Tabata, Mutsuya Takahashi, Yoshihisa Yamazaki
  • Publication number: 20100072116
    Abstract: A classifying device for classifying particles using a centrifugal force contains a microchannel includes a curved portion including a first tubular channel and a second tubular channel; and a diaphragm that is provided within the curved portion, and that is located at a position between the first tubular channel and the second tubular channel; and wherein the diaphragm has at least a first apertured group formed in a central region of the diaphragm and a second apertured group formed in a first end region and a second end region of the diaphragm, the first apertured group and the second apertured group communicate the first tubular channel with the second tubular channel along a direction of the centrifugal force, the first apertured group has a mesh, and the second apertured group has a mesh that is different in size from the mesh of the first apertured group.
    Type: Application
    Filed: February 24, 2009
    Publication date: March 25, 2010
    Applicant: FUJI XEROX CO., LTD
    Inventors: Kazuaki TABATA, Hiroshi KOJIMA, Kazuya HONGO, Takayuki YAMADA, Seiichi TAKAGI, Tetsuo OHTA, Masaki HIROTA
  • Patent number: 7632470
    Abstract: A microstructure includes first and second plates. The first plate defines a recess. The second plate is bonded to the first plate to block an opening of the recess to thereby form a closed vacuum space or a closed space filled with inert gas.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: December 15, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuaki Tabata, Takayuki Yamada, Mutsuya Takahashi, Yoshihisa Yamazaki