Patents by Inventor Masahiro Takashima

Masahiro Takashima 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: 11971683
    Abstract: Provided an electrophotographic electro-conductive member that can stably suppress an occurrence of fogging in an electrophotographic image. The member comprises a support having an electro-conductive outer surface, and an electro-conductive layer on the outer surface of the support, the electro-conductive layer having a matrix including a cross-linked product of a first rubber, and domains dispersed in the matrix, the domains each includes a cross-linked product of a second rubber and an electro-conductive particle, at least some of the domains is exposed to the outer surface of the electro-conductive member to constitute protrusions on an outer surface of the member, the outer surface of the electro-conductive member is constituted by the matrix and the domains exposed to the outer surface of the electrophotographic electro-conductive member, the electrophotographic electro-conductive member has an impedance of 1.0×103? or more and 1.0×108? or less, and some of the domains satisfy two specific requirements.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: April 30, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoru Nishioka, Kazuhiro Yamauchi, Hiroaki Watanabe, Takumi Furukawa, Yasuhiro Fushimoto, Masahiro Kurachi, Kenji Takashima, Yuichi Kikuchi, Kana Sato
  • Publication number: 20240010517
    Abstract: Provided is a method of manufacturing a composite hydroxide that can appropriately control a BET specific surface area. The method of manufacturing a composite hydroxide containing at least nickel (Ni) and cobalt (Co), wherein a first metal-containing aqueous solution containing A mol % of nickel (Ni) and B mol % of cobalt (Co), a second metal-containing aqueous solution containing C mol % of nickel (Ni) and D mol % of cobalt (Co), wherein A>C, B<D, A+B=100, and C+D=100, an aqueous solution of an alkali metal, and an aqueous solution containing an ammonium-ion supplying material, are separately fed into a reaction vessel; and a solution in the reaction vessel is maintained to have a pH value based on a liquid temperature at 25° C. within a range of 10.0 or higher and 13.0 or lower and a concentration of ammonium ion within a range of 1.0 g/L, or more and 10.0 g/L or less.
    Type: Application
    Filed: September 29, 2022
    Publication date: January 11, 2024
    Applicant: TANAKA CHEMICAL CORPORATION
    Inventors: Kazuki KATAGIRI, Yasutaka IIDA, Masahiro TAKASHIMA
  • Publication number: 20220158184
    Abstract: The present disclosure provides a precursor of a positive electrode active material, capable of obtaining the positive electrode active material that can exhibit a high discharge capacity and high charge/discharge efficiency, by being mounted on a secondary battery using a non-aqueous electrolyte, and the positive electrode active material obtained from the precursor, as well as a method for producing the positive electrode active material. The nickel composite hydroxide particles that are precursors of a positive electrode active material of a non-aqueous electrolyte secondary battery, having a void ratio of 45.0% or more and 55.0% or less.
    Type: Application
    Filed: January 31, 2022
    Publication date: May 19, 2022
    Applicants: TANAKA CHEMICAL CORPORATION, SANYO ELECTRIC CO., LTD.
    Inventors: Taiki YASUDA, Kazuki KATAGIRI, Takaaki MASUKAWA, Masahiro TAKASHIMA, Takeshi CHIBA, Yasunobu KAWAMOTO, Takahiro SAKAMOTO, Masahiro KINOSHITA
  • Publication number: 20210328216
    Abstract: A composite hydroxide in which reactivity of a lithium compound is equalized with another composite hydroxide having a large particle diameter. The composite hydroxide includes at least one metal selected from the group consisting of nickel, cobalt, and manganese, the composite hydroxide being a precursor of a positive electrode active material for a non-aqueous electrolyte secondary battery, wherein a secondary particle diameter with a cumulative volume percentage of 50% by volume (D50) is 4.0 ?m or less, tapped density (g/ml)/secondary particle diameter with cumulative volume percentage of 50% by volume (D50) (?m) is 0.60 g/ml·?m or more, and a specific surface area measured by a BET method is 15.0 m2/g or less.
    Type: Application
    Filed: July 1, 2021
    Publication date: October 21, 2021
    Applicant: TANAKA CHEMICAL CORPORATION
    Inventors: Kazuki KATAGIRI, Takaaki MASUKAWA, Masahiro TAKASHIMA
  • Patent number: 9857556
    Abstract: Disclosed is an apparatus for auto focus, which includes a first frame having a magnet, a second frame having an auto focus (AF) coil for moving the first frame in an optical axis direction and a yoke giving an attractive force to the magnet, and a plurality of balls arranged in the optical axis direction and located between the first frame and the second frame so that the first frame and the second frame are maintained to be spaced apart from each other. An entire height of the plurality of balls is equal to or higher than a height of the magnet on the basis of the optical axis direction.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: January 2, 2018
    Assignee: JAHWA electronics Co., Ltd.
    Inventors: Hee Seung Kim, In Soo Kim, Masahiro Takashima
  • Publication number: 20170357077
    Abstract: Disclosed is an apparatus for auto focus, which includes a first frame having a magnet, a second frame having an auto focus (AF) coil for moving the first frame in an optical axis direction and a yoke giving an attractive force to the magnet, and a plurality of balls arranged in the optical axis direction and located between the first frame and the second frame so that the first frame and the second frame are maintained to be spaced apart from each other. An entire height of the plurality of balls is equal to or higher than a height of the magnet on the basis of the optical axis direction.
    Type: Application
    Filed: January 9, 2017
    Publication date: December 14, 2017
    Applicant: JAHWA electronics Co., Ltd.
    Inventors: Hee Seung KIM, In Soo KIM, Masahiro TAKASHIMA
  • Patent number: 8149284
    Abstract: An imaging unit having: an image pickup element for imaging a subject; a camera shake correction unit for correcting camera shake by moving the image pickup element, wherein the camera shake correction unit includes a stage which carries the image pickup element; and a reference bedplate supporting the camera shake correction unit; at least two guide members which support the stage movably with respect to the reference bedplate in a predetermined direction respectively; and wherein the camera shake correction unit further includes a biasing member for biasing the stage in one direction except the predetermined directions with respect to the reference bedplate, thereby removing mechanical play in at least two directions out of the three dimensional directions of the guide member.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: April 3, 2012
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Hiroshi Hasegawa, Shigeo Homme, Masahiro Takashima
  • Publication number: 20100206620
    Abstract: The present invention relates to a bendable printed board, an image pickup apparatus, and a camera. The bendable printed board is provided with: a first end connected to a moving body movable in an arbitral direction within a predefined plane; a second end connected to a fixed body with slack providing movability to the moving body; and a slit formed on at least a part of a slack portion of the printed board.
    Type: Application
    Filed: April 28, 2010
    Publication date: August 19, 2010
    Applicant: Konica Minolta Opto Inc.
    Inventors: Tougo TERAMOTO, Masahiro Takashima
  • Patent number: 7734083
    Abstract: The present invention relates to a bendable printed board, an image pickup apparatus, and a camera. The bendable printed board is provided with: a first end connected to a moving body movable in an arbitral direction within a predefined plane; a second end connected to fixed body with slack providing movability to the moving body; and a slit formed on at least a part of a slack portion of the printed board.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: June 8, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Tougo Teramoto, Masahiro Takashima
  • Publication number: 20090219400
    Abstract: An imaging unit having: an image pickup element for imaging a subject; a camera shake correction unit for correcting camera shake by moving the image pickup element, wherein the camera shake correction unit includes a stage which carries the image pickup element; and a reference bedplate supporting the camera shake correction unit; at least two guide members which support the stage movably with respect to the reference bedplate in a predetermined direction respectively; and wherein the camera shake correction unit further includes a biasing member for biasing the stage in one direction except the predetermined directions with respect to the reference bedplate, thereby removing mechanical play in at least two directions out of the three dimensional directions of the guide member.
    Type: Application
    Filed: February 20, 2009
    Publication date: September 3, 2009
    Applicant: Konica Minolta Opto, Inc.
    Inventors: Hiroshi Hasegawa, Shigeo Homme, Masahiro Takashima
  • Patent number: 7505218
    Abstract: In a lens barrel in which an imaging optical system can be retracted and protruded, a retaining member to retain an optical element nearest to the imaging element among the imaging optical system is provided, the optical element moves in a receding direction from the imaging element when the imaging optical system is protruded, and moves in an approaching direction to the imaging element when the imaging optical system is retracted by deforming the retaining member.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: March 17, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Masahiro Takashima, Tougo Teramoto, Shigeo Homme
  • Publication number: 20070091476
    Abstract: In a lens barrel in which an imaging optical system can be retracted and protruded, a retaining member to retain an optical element nearest to the imaging element among the imaging optical system is provided, the optical element moves in a receding direction from the imaging element when the imaging optical system is protruded, and moves in an approaching direction to the imaging element when the imaging optical system is retracted by deforming the retaining member.
    Type: Application
    Filed: October 23, 2006
    Publication date: April 26, 2007
    Inventors: Masahiro Takashima, Tougo Teramoto, Shigeo Homme
  • Publication number: 20070019076
    Abstract: The present invention relates to a bendable printed board, an image pickup apparatus, and a camera. The bendable printed board is provided with: a first end connected to a moving body movable in an arbitral direction within a predefined plane; a second end connected to fixed body with slack providing movability to the moving body; and a slit formed on at least a part of a slack portion of the printed board.
    Type: Application
    Filed: June 29, 2006
    Publication date: January 25, 2007
    Applicant: Konica Minolta Opto Inc.
    Inventors: Tougo Teramoto, Masahiro Takashima