Patents by Inventor Hirofumi Masuda

Hirofumi Masuda 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).

  • Publication number: 20220395579
    Abstract: The present invention provides a novel antibody-pyrrolodiazepine derivative and a novel antibody-pyrrolodiazepine derivative conjugate using the same, and a novel CLDN6 and/or CLDN9 antibody.
    Type: Application
    Filed: June 26, 2022
    Publication date: December 15, 2022
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Narihiro TODA, Yusuke OTA, Fuminao DOI, Masaki MEGURO, Ichiro HAYAKAWA, Shinji ASHIDA, Takeshi MASUDA, Takashi NAKADA, Mitsuhiro IWAMOTO, Naoya HARADA, Tomoko TERAUCHI, Daisuke OKAJIMA, Kensuke NAKAMURA, Hiroaki UCHIDA, Hirofumi HAMADA
  • Publication number: 20220389141
    Abstract: An acrylic rubber including: a polymer composition of: 70 to 99.9% by weight of a bonding unit derived from at least one (meth) acrylic acid ester selected from (meth) acrylic acid alkyl ester and (meth) acrylic acid alkoxyalkyl ester; 0.1 to 10% by weight of a bonding unit derived from a monomer containing a reactive group; and 0 to 20% by weight of a bonding unit derived from other monomer, wherein ash content is 0.15% by weight or less, total amount of sodium and sulfur in the ash is 60% by weight or more, a ratio of sodium to sulfur by weight ratio is in the range of 0.5 to 2.5, ratio of Z-average molecular weight to weight average molecular weight is 1.3 or more, and weight average molecular weight is in the range of 1,000,000 to 5,000,000.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 8, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Nobuhiro TSUNEKUNI
  • Patent number: 11491462
    Abstract: An object of the present invention is to provide a ligand-immobilized sea-island composite fiber in which generation of fine particles due to peeling of a sea component from an island component and generation of fine particles due to destruction of a fragile sea component are both suppressed. The present invention provides a sea-island composite fiber comprising a sea component and island components, in which a value (L/S) obtained by dividing the average total length (L) of the perimeter of all island components in a cross section perpendicular to the fiber axis by the average cross-sectional area (S) of the cross section is from 1.0 to 50.0 ?m?1, a distance from the surface to the outermost island component is 1.9 ?m or less, and an amino group-containing compound is covalently bonded to a polymer constituting the sea component at a charge density of 0.1 ?mol or more and less than 500 ?mol per 1 gram dry weight.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: November 8, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Ryo Matsunaga, Junichi Kasuya, Yoshiyuki Ueno, Hirofumi Yamanaka, Yasunori Kanemori, Masato Masuda, Joji Funakoshi
  • Publication number: 20220315683
    Abstract: Acrylic rubber bale excellent in storage stability and processability, a method for producing the same, a rubber mixture obtained by mixing the acrylic rubber bale, and a cross-linked product of the rubber mixture are provided. The acrylic rubber bale includes an acrylic rubber having a reactive group and a weight average molecular weight (Mw) of 100,000 to 5,000,000, wherein an amount of gel insoluble in methyl ethyl ketone is 50% by weight or less, and a specific gravity is 0.8 or more.
    Type: Application
    Filed: June 5, 2020
    Publication date: October 6, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Takafumi KAWANAKA
  • Publication number: 20220267491
    Abstract: An acrylic rubber bale excellent in storage stability and processability, a method for producing the same, a rubber mixture obtained by mixing the acrylic rubber bale, and a rubber cross-linked product of the rubber mixture are provided. The acrylic rubber bale according to the present invention includes an acrylic rubber having a reactive group and a weight average molecular weight (Mw) of 100,000 to 5,000,000, wherein an amount of gel insoluble in methyl ethyl ketone is 50% by weight or less, and pH is 6 or less.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 25, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Takafumi KAWANAKA
  • Publication number: 20220259345
    Abstract: Acrylic rubber bale excellent in storage stability and processability, a method for producing the same, a rubber mixture obtained by mixing the acrylic rubber bale, and a cross-linked product of the rubber mixture are provided. The acrylic rubber bale includes an acrylic rubber having a reactive group and a weight average molecular weight (Mw) of 100,000 to 5,000,000, wherein an amount of gel insoluble in methyl ethyl ketone is 60% by weight or less, and a specific gravity is 0.8 or more.
    Type: Application
    Filed: July 17, 2020
    Publication date: August 18, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Takafumi KAWANAKA
  • Publication number: 20220259347
    Abstract: An acrylic rubber excellent in water resistance and a method for producing the same are provided. An acrylic rubber composed of: 70 to 99.9 wt % of a bonding unit derived from (meth) acrylic acid ester; 0.1 to 10 wt % of a bonding unit derived from a cross-linkable monomer; and if necessary, 0 to 20 wt % of a bonding unit derived from another monomer, wherein the ash content is 0.5 wt % or less, the total amount of magnesium and phosphorus in the ash is 30 wt % or more, a ratio of the magnesium to the phosphorus ([Mg]/[P]) by weight is 0.4 to 2.5, and Mooney viscosity (ML1+4, 100° C.) of the rubber is 10 to 150 is particularly excellent in water resistance, and a rubber cross-linked product using the same is also excellent in physical properties.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 18, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Takafumi KAWANAKA
  • Publication number: 20220259348
    Abstract: An acrylic rubber bale excellent in strength properties and processability, a method for producing the same, a rubber mixture containing the acrylic rubber bale, a method for producing the same, and a rubber cross-linked product of the same. The acrylic rubber bale includes an acrylic rubber mainly containing a (meth) acrylic acid ester having a weight average molecular weight (Mw) of 1,000,000 to 5,000,000, and a ratio (Mz/Mw) of a Z-average molecular weight (Mz) and a weight average molecular weight (Mw) is 1.3 or more, wherein an amount of gel insoluble in methyl ethyl ketone is 50% by weight or less.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 18, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Takafumi KAWANAKA
  • Patent number: 11414150
    Abstract: An operating device for a human-powered vehicle comprises a base member, an operating member, an electric switch, and a controller. The operating member is movably coupled to the base member. The electric switch is configured to receive a user input in response to a movement of the operating member to operate an additional device. The controller is configured to change a mode of the controller at least between a first mode in which the controller is configured to be under first power consumption and a second mode in which the controller is configured to be under second power consumption different from the first power consumption.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: August 16, 2022
    Assignee: Shimano Inc.
    Inventors: Tomohiro Takimoto, Hirofumi Fukui, Takaya Masuda
  • Publication number: 20220251265
    Abstract: Acrylic rubber bale having remarkably improved storage stability and water resistance without deteriorating cross-linking properties, a method of production, a rubber mixture obtained by mixing the acrylic rubber bale, a method of production, and a rubber cross-linked product obtained by cross-linking the same is provided. The acrylic rubber bale includes an acrylic rubber, and the acrylic rubber is mainly composed of (meth) acrylic acid ester, and has a weight average molecular weight of 100,000 to 5,000,000, and has a ratio of a Z-average molecular weight and a weight average molecular weight of 1.3 or more, where an ash content is 0.6% by weight or less, and the ash contains a periodic table group 2 metal and phosphorus, and a phosphorus content is 10% by weight or more, and the ratio of the periodic table group 2 metal to phosphorus is in the range of 0.6 to 2 molar ratio.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 11, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Takafumi KAWANAKA
  • Publication number: 20220251277
    Abstract: An acrylic rubber sheet excellent in storage stability and water resistance, a method for producing the same, a rubber mixture containing the acrylic rubber sheet and a rubber cross-linked product thereof are provided. The acrylic rubber sheet according to the present invention includes an acrylic rubber having a reactive group and having a weight average molecular weight (Mw), a ratio of a Z-average molecular weight (Mz) and a weight average molecular weight (Mw) in a specific range. The acrylic rubber sheet according to the present invention has an ash content of 0.2% by weight or less, an amount of gel insoluble in methyl ethyl ketone is 50% by weight or less, and a water content of less than 1% by weight, and is excellent in water resistance and highly well-balanced in strength properties and processability.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 11, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Nobuhiro TSUNEKUNI
  • Publication number: 20220251330
    Abstract: An acrylic rubber bale excellent in storage stability and water resistance and a method for producing the same are provided. An acrylic rubber bale, including an acrylic rubber having a reactive group, with a specific ash content, a large proportion of magnesium and phosphorus in the ash, and a specific ratio of magnesium and phosphorus, is highly excellent in storage stability and water resistance. This acrylic rubber bale can be produced by using a specific stabilizer and a specific coagulant in an emulsion polymerization process of an acrylic rubber and performing a process from coagulation process to baling process under specific conditions.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 11, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Nobuhiro TSUNEKUNI
  • Publication number: 20220235190
    Abstract: An acrylic rubber sheet excellent in storage stability and processability, a method for producing the same, an acrylic rubber bale obtained by laminating the sheets, a mixture obtained by mixing the acrylic rubber sheet and the acrylic rubber bale, a method for producing the mixture and a rubber cross-linking product obtained by cross-linking the mixture. The acrylic rubber sheet comprises, an acrylic rubber mainly composed of a (meth) acrylic acid ester and having a weight average molecular weight (Mw) of 100,000 to 5,000,000 and a ratio (Mz/Mw) of a Z-average molecular weight (Mz) and a weight average molecular weight (Mw) is 1.3 or more, and the acrylic rubber sheet contains a phenolic anti-aging agent, and a gel amount is 50 wt % or less. The acrylic rubber sheet is extremely excellent in storage stability and processability and the sheet can be easily produced by the claimed method.
    Type: Application
    Filed: June 5, 2020
    Publication date: July 28, 2022
    Applicant: ZEON CORPORATION
    Inventors: Hirofumi MASUDA, Takafumi KAWANAKA
  • Publication number: 20220227672
    Abstract: A ceramic body being configured of mainly BaTiO3-based crystalline particles in which a part of Ba is substituted with at least one rare earth element, wherein the ceramic body contains Ba6Ti17O40 crystalline particles of from 1.0 to 10.0% by mass.
    Type: Application
    Filed: December 9, 2021
    Publication date: July 21, 2022
    Applicant: NGK INSULATORS, LTD.
    Inventors: Toru HAYASE, Hirofumi YAMAGUCHI, Masaaki MASUDA, Yukio MIYAIRI
  • Publication number: 20200239612
    Abstract: An acrylic rubber has a residual calcium content of 60 wt ppm or less and a polymer pH of 7.0 or less, and preferably has a carboxyl group.
    Type: Application
    Filed: January 31, 2018
    Publication date: July 30, 2020
    Applicant: ZEON CORPORATION
    Inventors: Keisuke KOJIMA, Kazuhiro EJIRI, Hirofumi MASUDA
  • Publication number: 20200002523
    Abstract: An acrylic rubber includes a (meth)acrylate ester monomeric unit; and a crosslinkable monomeric unit, wherein a complex viscosity at 60° C. denoted as ?*(60° C.) and a complex viscosity at 100° C. denoted as ?*(100° C.) satisfy the following formula (1) and the following formula (2). ?*(100° C.)/?*(60° C.)<0.8??(1) ?*(100° C.
    Type: Application
    Filed: January 26, 2018
    Publication date: January 2, 2020
    Applicant: ZEON CORPORATION
    Inventors: Ayako FURUKO, Kazuhiro EJIRI, Hirofumi MASUDA
  • Patent number: 8084542
    Abstract: An acrylic rubber comprised of a copolymer comprising 0.1 to 20% by weight of (A) units of a butenedioic acid monoester monomer having an alicyclic structure and 50 to 99.9% by weight of (B) units of at least one kind of monomer selected from acrylic acid ester monomers and methacrylic acid ester monomers. A crosslinkable acrylic rubber composition comprising the acrylic rubber and a crosslinking agent, especially a polyamine crosslinking agent, has good process-stability and good shapability and gives a shaped article having high heat resistance and exhibiting reduced permanent set.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: December 27, 2011
    Assignee: Zeon Corporation
    Inventors: Hirofumi Masuda, Yoshiaki Aimura, Kiyonori Umetsu
  • Publication number: 20090312534
    Abstract: A method is provided for efficiently removing the silicon substituent which protects the 3?-hydroxyl group and the 5?-hydroxyl group of a ribose of a ribonucleic acid derivative in which the 2?-hydroxyl group of the ribose is protected with the following substituent (I) where WG1 represents an electron withdrawing group, and the 3?-hydroxyl group and the 5?-hydroxyl group of the ribose are protected with a silyl protecting group.
    Type: Application
    Filed: February 26, 2007
    Publication date: December 17, 2009
    Applicant: NIPPON SHINYAKU CO., LTD.
    Inventors: Hidetoshi Kitagawa, Hirofumi Masuda
  • Publication number: 20090005512
    Abstract: An acrylic rubber comprised of a copolymer comprising 0.1 to 20% by weight of (A) units of a butenedioic acid monoester monomer having an alicyclic structure and 50 to 99.9% by weight of (B) units of at least one kind of monomer selected from acrylic acid ester monomers and methacrylic acid ester monomers. A crosslinkable acrylic rubber composition comprising the acrylic rubber and a crosslinking agent, especially a polyamine crosslinking agent, has good process-stability and good shapability and gives a shaped article having high heat resistance and exhibiting reduced permanent set.
    Type: Application
    Filed: August 26, 2008
    Publication date: January 1, 2009
    Inventors: Hirofumi Masuda, Yoshiaki Aimura, Kiyonori Umetsu
  • Publication number: 20080021164
    Abstract: A thermoplastic elastomer composition comprised of 20 to 95 wt % of a polyester resin (A) having a melt flow rate of 4 g/10 min to less than 20 g/10 min and 80 to 5 wt % of at least one type of rubber (B) selected from an acryl rubber (B1), hydrogenated nitrile rubber (B2), and polyether rubber (B3), wherein the rubber (B) is dynamically cross-linked. The composition can be shaped and suitably used for a seal part, hose part, boot part, or other auto related rubber part.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 24, 2008
    Inventors: Hirofumi Masuda, Kiyonori Umetsu, Kazuhiro Ejiri