Patents by Inventor Kenji Echizen

Kenji Echizen 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).

  • SEPARATOR FOR BATTERIES
    Publication number: 20230411791
    Abstract: A battery separator includes a polyolefin porous membrane; and a heat-resistant porous layer provided thereon, wherein the heat-resistant porous layer contains barium sulfate particles and an organic synthetic resin component, the barium sulfate particles contain 20% by volume or less of particles having a diameter of 0.5 ?m or less and 10% by volume or less of particles having a diameter of 3.0 ?m or more, the heat-resistant porous layer contains 70% by volume or more and 98% by volume or less of the barium sulfate particles when the total of the barium sulfate particles and the organic synthetic resin component is taken as 100% by volume, an average thickness of the heat-resistant porous layer is 2 ?m or more and 10 ?m or less, a moisture ratio of the separator is 400 ppm or less, and a content of hydrogen sulfide is 0.2×10?3 mg/m2 or less.
    Type: Application
    Filed: December 22, 2020
    Publication date: December 21, 2023
    Inventors: Hirokazu Ninomiya, Kenji Echizen, Kaho Furuyama
  • SEPARATOR FOR BATTERIES AND METHOD FOR PRODUCING SAME
    Publication number: 20220328928
    Abstract: A battery separator includes: a polyolefin porous film; and a heat-resistant porous layer provided on at least one surface of the polyolefin porous film. The heat-resistant porous layer contains barium sulfate particles and an organic synthetic resin component. The barium sulfate particles are contained in the heat-resistant porous layer in an amount of 70 volume % or more and 96 volume % or less, and are contained in the heat-resistant porous layer in an amount of 1.8 g/m2 or more and 19.8 g/m2 or less. An amount of increase in an air permeability resistance per 1 ?m thickness of the heat-resistant porous layer is 10.0 sec/100 ccAir or less, a shrinkage rate when the heat-resistant porous layer has been left under an atmosphere of 130° C. for 1 hour is 8.0% or less, and a concentration of hydrogen sulfide is 0.3 ppm by volume or less.
    Type: Application
    Filed: August 7, 2020
    Publication date: October 13, 2022
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Tatsunori HAGIHARA, Kenji ECHIZEN, Hirokazu NINOMIYA, Naoki MIZUNO
  • Lubricant composition and article, disk molding stamper, disk molding apparatus, disk forming method, method of forming lubrication coating
    Patent number: 8029262
    Abstract: A boundary lubricant film 1 is formed on a stamper 22 contact portion of a stationary mirror 21 and/or a stationary mirror 21 contact portion of the stamper 22. The boundary lubricant film 1 contains one of kinds of phosphate esters. A material is injected into a cavity 14. As a result, a disc substrate for an optical disc is molded.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: October 4, 2011
    Assignee: Sony Corporation
    Inventors: Takeshi Gouko, Kenji Echizen, Mikio Sato, Akio Koshita
  • Disk forming method
    Patent number: 7700011
    Abstract: A boundary lubricant film 1 is formed on a stamper 22 contact portion of a stationary mirror 21 and/or a stationary mirror 21 contact portion of the stamper 22. The boundary lubricant film 1 contains one of kinds of phosphate esters. A material is injected into a cavity 14. As a result, a disc substrate for an optical disc is molded.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: April 20, 2010
    Assignee: Sony Corporation
    Inventors: Takeshi Gouko, Kenji Echizen, Mikio Sato, Akio Koshita
  • INK, INK CARTRIDGE, AND INKJET RECORDING METHOD
    Publication number: 20090066766
    Abstract: An ink according to the present invention is an ink including a pigment, water, and a water-soluble organic solvent, characterized in that the absorption coefficient Ka to a recording medium is in the range of 9-84.2 ml/m2 sec1/2; and the aforesaid ink is used in a recording apparatus in which a nozzle is placed in a perpendicular direction to the conveyance direction of the aforesaid recording medium, and a head supporting this nozzle is fixed; thus, superior ink fixation properties and printing quality can be obtained.
    Type: Application
    Filed: October 18, 2005
    Publication date: March 12, 2009
    Applicant: SONY CORPORATION
    Inventors: Hiroyuki Nakashinden, Kenji Echizen
  • LUBRICANT COMPOSITION AND ARTICLE, DISK MOLDING STAMPER, DISK MOLDING APPARATUS, DISK FORMING METHOD, METHOD OF FORMING LUBRICATION COATING
    Publication number: 20080230955
    Abstract: A boundary lubricant film 1 is formed on a stamper 22 contact portion of a stationary mirror 21 and/or a stationary mirror 21 contact portion of the stamper 22. The boundary lubricant film 1 contains one of kinds of phosphate esters. A material is injected into a cavity 14. As a result, a disc substrate for an optical disc is molded.
    Type: Application
    Filed: May 30, 2008
    Publication date: September 25, 2008
    Applicant: SONY CORPORATION
    Inventors: Takeshi Gouko, Kenji Echizen, Mikio Sato, Akio Koshita
  • LUBRICANT COMPOSITION AND ARTICLE, DISK MOLDING STAMPER, DISK MOLDING APPARATUS, DISK FORMING METHOD, METHOD OF FORMING LUBRICATION COATING
    Publication number: 20060258548
    Abstract: A boundary lubricant film 1 is formed on a stamper 22 contact portion of a stationary mirror 21 and/or a stationary mirror 21 contact portion of the stamper 22. The boundary lubricant film 1 contains one of kinds of phosphate esters. A material is injected into a cavity 14. As a result, a disc substrate for an optical disc is molded.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 16, 2006
    Inventors: Takeshi Gouko, Kenji Echizen, Mikio Sato, Akio Koshita