Patents by Inventor Masakazu Umehara

Masakazu Umehara 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: 9486828
    Abstract: First and second coaters, first and second edge determiners, and first and second moving mechanisms are provided. The first and second coaters apply a coating solution for forming a heat-resistant protection layer onto both surfaces of a substrate on each of which an active material layer is previously formed. The first and second edge determiners determine the locations of lateral edges of the active material layers formed on both surfaces of the substrate to be coated by the respective first and second coaters. The first and second moving mechanisms move the location of the substrate along the width thereof based on the locations of the lateral edges determined by the first and second edge determiners, respectively. The locations of regions of both surfaces of the substrate to be coated are separately adjusted.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: November 8, 2016
    Assignees: FUJI KIKAI KOGYO CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidenobu Miura, Masakazu Umehara
  • Publication number: 20160250658
    Abstract: A gravure kiss coater 1 includes a paint feeder 30 placed along a small-diameter gravure roll 10 having an outside diameter D in a range of 45-150 mm. The paint feeder 30 includes a doctor blade 32, a case 31, and a coating feed path 34,35. A distal end 32a of the doctor blade 32 is directed in a direction opposite to a direction of rotation of the small-diameter gravure roll 10, and the small-diameter gravure roll 10 is capable of contacting the substrate S within a range of rotation angles equal to or less than 90° from the distal end 32a of the doctor blade 32.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 1, 2016
    Inventors: Hidenobu MIURA, Masakazu UMEHARA
  • Publication number: 20160190533
    Abstract: An electrode body includes a positive and a negative electrode, and insulating layer. The positive electrode includes a positive electrode current collector and a positive electrode mixture layer formed both sides of the positive electrode current collector. The negative electrode includes a negative electrode current collector and a negative electrode mixture layer formed both sides of the negative electrode current collector. The insulating layer is provided between the positive and the negative electrode. The insulating layer includes a first and a second insulating layer. The first insulating layer contains ceramic particles and resin particles. A mass ratio of the ceramic particles to the resin particles is 100:0 to 50:50. The second insulating layer is formed of resin particles. The first insulating layer is arranged between the positive electrode mixture layer and the second insulating layer or between the negative electrode mixture layer and the second insulating layer.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 30, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masakazu UMEHARA
  • Publication number: 20160181652
    Abstract: An electrode body includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed on the positive electrode current collector. The negative electrode includes a negative electrode current collector, a negative electrode mixture layer disposed on the negative electrode current collector and an insulation layer disposed on the negative electrode mixture layer and containing insulation particles. An insulation layer containing the insulation particles is formed on a side surface of width-direction end of the negative electrode so as to cover the side surface of the end portion.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 23, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masakazu UMEHARA
  • Publication number: 20160129472
    Abstract: A double-sided coater 1 includes a first coater 5a coating a surface not contacting a guide roll 4b, and a second coater 5b coating another surface contacting the guide roll 4b. Each of the first and second coaters 5a and 5b includes a gravure kiss coater including a small-diameter gravure roll 10 and a coating liquid supplier 30. The guide roll 4b guides a substrate S from a vertical direction to a horizontal direction to allow the first coater 5a to coat the substrate S from a lateral point while the substrate S travels vertically, and to allow the second coater 5b to coat the substrate S from a lower point while the substrate S travels horizontally.
    Type: Application
    Filed: May 7, 2014
    Publication date: May 12, 2016
    Applicants: FUJI KIKAI KOGYO CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidenobu MIURA, Masakazu UMEHARA
  • Publication number: 20150086707
    Abstract: A method for manufacturing a battery provided with an electrode sheet including a separator layer integrally formed on an active material layer. The method includes: a coating step in which a liquid dispersion in which resin particles are dispersed is coated onto the active material layer, forming an undried separator layer; and a heat drying step in which the undried separator layer is dried by heating, forming the separator layer. The heat-drying step is a step for heat drying the undried separator layer at a temperature within a surface melting temperature range in which a surface portion of the resin particles melts, but a center portion does not melt.
    Type: Application
    Filed: May 17, 2012
    Publication date: March 26, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masakazu Umehara
  • Publication number: 20150007769
    Abstract: First and second coaters, first and second edge determiners, and first and second moving mechanisms are provided. The first and second coaters apply a coating solution for forming a heat-resistant protection layer onto both surfaces of a substrate on each of which an active material layer is previously formed. The first and second edge determiners determine the locations of lateral edges of the active material layers formed on both surfaces of the substrate to be coated by the respective first and second coaters. The first and second moving mechanisms move the location of the substrate along the width thereof based on the locations of the lateral edges determined by the first and second edge determiners, respectively. The locations of regions of both surfaces of the substrate to be coated are separately adjusted.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 8, 2015
    Inventors: Hidenobu MIURA, Masakazu UMEHARA
  • Patent number: 8790419
    Abstract: The present invention provides a method of manufacturing a cell separator in which a protective layer mainly composed of at least one type of granular ceramic is formed on a surface of a porous sheet base material. The method includes preparation of a water-based paste obtained by mixing a solid material containing the granular ceramic and a binder with an aqueous solvent to which at least one type of alcohol has been added, and formation of a protective layer in a state in which the alcohol has been eliminated by coating the prepared water-based paste onto a surface of the porous sheet base material, and further includes formation of the protective layer so that the solids content in the protective layer is higher than the solids content in the water-based paste by an amount of elimination of the alcohol, and is at least 55% by mass.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: July 29, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masakazu Umehara
  • Publication number: 20130309566
    Abstract: A secondary battery 100 comprises a positive electrode current collector 221 and a positive electrode active material layer 223 applied on the positive electrode current collector 221 and containing at least a positive electrode active material. The lithium-ion secondary battery 100 further comprises a negative electrode current collector 241 provided so as to oppose the positive electrode current collector 221 and a negative electrode active material layer 243 applied on the negative electrode current collector 241 and containing at least a negative electrode active material. The lithium-ion secondary battery 100 is also formed with a porous insulating layer 245 which contains stacked resin particles having insulating properties and is formed so as to cover at least one of the positive electrode active material layer 223 and the negative electrode active material layer 243 (in this case, negative electrode active material layer 243).
    Type: Application
    Filed: January 28, 2011
    Publication date: November 21, 2013
    Inventor: Masakazu Umehara
  • Publication number: 20130236791
    Abstract: Disclosed is a method for producing a battery in which a separator layer having a high surface smoothness has been formed on a surface of at least one of the positive electrode and the negative electrode. This production method includes the steps of preparing a separator layer-forming coating having a viscosity of from 500 mPa·s to 5,000 mPa·s by mixing together at least insulating particles, a binder and a solvent; and applying the coating onto a surface of at least one of a positive electrode active material layer of a positive electrode and a negative electrode active material layer of a negative electrode.
    Type: Application
    Filed: November 24, 2010
    Publication date: September 12, 2013
    Inventors: Shingo Ogane, Masakazu Umehara
  • Publication number: 20120100411
    Abstract: The present invention provides a method of manufacturing a cell separator in which a protective layer mainly composed of at least one type of granular ceramic is formed on a surface of a porous sheet base material. The method includes preparation of a water-based paste obtained by mixing a solid material containing the granular ceramic and a binder with an aqueous solvent to which at least one type of alcohol has been added, and formation of a protective layer in a state in which the alcohol has been eliminated by coating the prepared water-based paste onto a surface of the porous sheet base material, and further includes formation of the protective layer so that the solids content in the protective layer is higher than the solids content in the water-based paste by an amount of elimination of the alcohol, and is at least 55% by mass.
    Type: Application
    Filed: May 8, 2009
    Publication date: April 26, 2012
    Inventor: Masakazu Umehara
  • Patent number: 8088513
    Abstract: A battery capable of inhibiting temperature increase and an anode used for it are provided. An anode active material layer contains an anode active material and a polymer containing a binder, vinylidene fluoride, as a component. A calorific value by differential scanning calorimetry in charging the anode active material layer is 500 J/g or less in the range from 230 deg C. to 370 deg C., and is preferably 400 J/g or less. Further, a difference between the maximum value of calorific value and a calorific value at 100 deg C. is 1.70 W/g or less, and is preferably 1.60 W/g or less.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: January 3, 2012
    Assignee: Sony Corporation
    Inventors: Masaki Machida, Masakazu Umehara
  • Publication number: 20110212357
    Abstract: This invention provides a battery comprising a separator, which has a shutdown function and, at the same time, can suppress a lowering in output of the battery, a vehicle with the battery mounted thereon, and a battery mounted equipment. A battery (1) comprises a positive electrode plate (31), a negative electrode plate (41), and a separator (20). The separator comprises a porous resin layer (21) formed of a polyolefin-type synthetic resin and an inorganic oxide layer (27) layered on the resin layer (21). First particles (P1), which are independent single crystal particles, and second particles (P2), which are connected particles comprising a plurality of particulate parts formed of a single crystal connected to each other in chains and integrated with each other, are dispersed in each other in the inorganic oxide layer (27).
    Type: Application
    Filed: November 7, 2008
    Publication date: September 1, 2011
    Inventor: Masakazu Umehara
  • Publication number: 20060127765
    Abstract: A battery capable of inhibiting temperature increase and an anode used for it are provided. An anode active material layer contains an anode active material and a polymer containing a binder, vinylidene fluoride, as a component. A calorific value by differential scanning calorimetry in charging the anode active material layer is 500 J/g or less in the range from 230 deg C. to 370 deg C., and is preferably 400 J/g or less. Further, a difference between the maximum value of calorific value and a calorific value at 100 deg C. is 1.70 W/g or less, and is preferably 1.60 W/g or less.
    Type: Application
    Filed: November 29, 2005
    Publication date: June 15, 2006
    Inventors: Masaki Machida, Masakazu Umehara
  • Patent number: 5035315
    Abstract: A method and apparatus for use in production line of foodstuff and other goods which sorts pieces of goods, such as biscuits, continuously supplied, into groups of a predetermined number of pieces each at predetermined intervals. The transfer speed of pieces on an upstream transport path is set to a predetermined constant speed, and the transport speed of pieces at the sorting section is controlled according to a velocity profile consisting of alternately successive cycles of a low speed zone and a high speed zone. Thus, by utilizing the speed difference between the low speed zone and the high speed zone, groups of a specified number of pieces each are formed on the transport plane of the sorting section, and a predetermined interval is provided between adjacent groups of pieces.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: July 30, 1991
    Assignee: Tenchi Kikai Kabushiki Kaisha
    Inventors: Hiroaki Fukusaki, Masakazu Umehara, Hiroyuki Gatayama
  • Patent number: 4249364
    Abstract: A heat-seal type wrapping apparatus which operates by wrapping successive pieces of candy at regular intervals in a plastic film being unwound from a reel and being formed into a cylinder, subjecting the cylinder of plastic film to longitudinal heat seal along its overlapping margins and then to transverse heat seal between adjacent wrapped pieces of candy, and centrally severing the transversely heat-sealed regions. The apparatus comprises a device for preheating the overlapping margins of the film to a suitable temperature prior to the longitudinal heat seal and a device for preheating transverse heat-seal regions to a suitable temperature prior to the transverse heat seal, thereby ensuring satisfactory heat seal both longitudinal and transverse.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: February 10, 1981
    Assignee: Tenchi Kikai Kabushiki Kaisha
    Inventors: Kaoru Kawasaki, Masakazu Umehara