Patents by Inventor Yasuo Kurachi

Yasuo Kurachi 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: 10899923
    Abstract: Provided is a resin composition having improved fluidity in a molten state maintained without lowering heat resistance, containing: a polymer being a reaction product of a first organic compound having a phenolic hydroxyl group and a second organic compound having a glycidyl group, Mw of the polymer being no greater than 10,000; and a thermoplastic resin other than the polymer. A proportion of the polymer contained in the resin composition is from 0.1% to 30% by mass. A melting point of the thermoplastic resin is no less than 200° C. The thermoplastic resin has a benzene ring in a molecule. The polymer and the thermoplastic resin have blended to form a homogeneous phase. Also provided are a molded product formed from the aforementioned resin composition, and a production method of a molded product including: kneading the resin composition by chaotic mixing; and molding a kneaded product obtained after the kneading.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: January 26, 2021
    Assignee: Asahi Yukizai Corporation
    Inventors: Yasuhiro Matumoto, Takanori Inoue, Yasuo Kurachi
  • Publication number: 20200157738
    Abstract: A high-strength fiber bundle sufficiently impregnated with a thermoplastic resin, without impairing mechanical strength. A high-strength fiber composite cable is produced by impregnating a bundle of carbon fibers with a matrix resin. The matrix resin is obtained by mixing, with a thermoplastic resin, such as polyphenylene sulfide, an oligomer having a weight-average molecular weight of less than 10,000, obtained by causing a reaction between an organic compound having a phenolic hydroxyl group and an organic compound having a glycidyl ether group. The matrix resin, which has a viscosity low in comparison with that of the thermoplastic resin serving as a base material, readily impregnates the bundle of carbon fibers with certainty.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Applicants: TOKYO ROPE MANUFACTURING CO., LTD., KENSYU & CO., LTD.
    Inventors: Yukito YAMAMOTO, Takuya KATAYAMA, Shunji HACHISUKA, Yasuo KURACHI
  • Publication number: 20190300698
    Abstract: Provided is a resin composition having improved fluidity in a molten state maintained without lowering heat resistance, containing: a polymer being a reaction product of a first organic compound having a phenolic hydroxyl group and a second organic compound having a glycidyl group, Mw of the polymer being no greater than 10,000; and a thermoplastic resin other than the polymer. A proportion of the polymer contained in the resin composition is from 0.1% to 30% by mass. A melting point of the thermoplastic resin is no less than 200° C. The thermoplastic resin has a benzene ring in a molecule. The polymer and the thermoplastic resin have blended to form a homogeneous phase. Also provided are a molded product formed from the aforementioned resin composition, and a production method of a molded product including: kneading the resin composition by chaotic mixing; and molding a kneaded product obtained after the kneading.
    Type: Application
    Filed: October 27, 2017
    Publication date: October 3, 2019
    Applicant: Asahi Yukizai Corporation
    Inventors: Yasuhiro MATUMOTO, Takanori INOUE, Yasuo KURACHI
  • Publication number: 20170152368
    Abstract: Provided is a resin composition including a polycarbonate and a phosphorus-containing compound, wherein a content rate of the phosphorus-containing compound in the resin composition is less than 14 percent by mass, wherein the phosphorus-containing compound includes a phosphazene derivative represented by general formula (1) below and a phosphoric acid ester, wherein a content rate of the phosphazene derivative in the resin composition is 0.1 percent by mass or greater but less than 3.0 percent by mass, and wherein a resin specific gravity (D0) of the resin composition before burned in a UL94V test and a resin specific gravity (D1) of the resin composition after burned in the UL94V test satisfy a relationship of D1/D0>0.85, where in general formula (1), R1 and R2 each independently represent an aromatic ring-containing group free of a halogen atom, and m represents any of from 3 through 8.
    Type: Application
    Filed: November 21, 2016
    Publication date: June 1, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yasushi AKIBA, Tadakatsu HARADA, Yasuo KURACHI
  • Patent number: 8841368
    Abstract: A method for manufacturing a nonflammable polyester resin composition comprising: making a polymer mixture containing the following (A) to (E) components in a melted state pass through a space between two parallel faces, with a face-to-face distance x being set to 5 mm or less; (A) a polyester resin of 40 to 80% by weight; (B) a polycarbonate resin of 5 to 40% by weight; (C) a rubbery polymer of 5 to 30% by weight; (D) a polyphenylene sulfide resin and/or a phenol resin of 2 to 20% by weight; and (E) a phosphorus-containing acid ester compound and/or a polyamide resin of 0.1 to 25% by weight.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: September 23, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Yasuo Kurachi, Akira Ohira
  • Patent number: 8725051
    Abstract: Disclosed is a heat-producing fixing belt of a cylindrical shape which is composed of a heat-producing layer, an elastic layer, and a releasing layer in this sequential order from the inner side, and the heat-producing layer contains a polyimide resin and fabric containing carbon fiber and a pair of electrodes to supply power to the heat-producing layer making contact with the fabric containing carbon fiber are provided on both ends of the cylindrical shape.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 13, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Eiichi Yoshida, Susumu Sudo, Yasuo Kurachi, Kotaro Takebe, Izumi Mukoyama
  • Patent number: 8470232
    Abstract: The present invention relates to a method for producing an annular belt made of polyimide comprising; a) joining both ends of a sheet made of a polyimide precursor to form an annular belt; and b) performing an imidizing reaction of the polyimide precursor.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: June 25, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Yasuo Kurachi
  • Publication number: 20130045034
    Abstract: Disclosed is a heat-producing fixing belt of a cylindrical shape which is composed of a heat-producing layer, an elastic layer, and a releasing layer in this sequential order from the inner side, and the heat-producing layer contains a polyimide resin and fabric containing carbon fiber and a pair of electrodes to supply power to the heat-producing layer making contact with the fabric containing carbon fiber are provided on both ends of the cylindrical shape.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 21, 2013
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Eiichi YOSHIDA, Susumu SUDO, Yasuo KURACHI, Kotaro TAKEBE, Izumi MUKOYAMA
  • Patent number: 8357761
    Abstract: A polymer composition containing two kinds of polymers and having a difference in its glass transition temperature of 3° C. or lower between before and after heat-treatment by getting it through a space between two parallel faces in a molten state.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: January 22, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Yasuo Kurachi
  • Publication number: 20120235327
    Abstract: Disclosed are a recycled resin manufacturing process and a recycled resin, the process comprising the steps of sorting a molded waste resin product, pulverizing the sorted molded waste resin product into resin flakes, washing the resin flakes, separating the washed resin flakes to remove different kinds of resins, drying the separated resin flakes, classifying the dried resin flakes to remove foreign matter deposited on the flakes, the classifying being carried out employing a classifying apparatus comprising a classifying section and provided therein, a physical field application device having an airflow force field and another physical field other than the airflow force field, and pelletizing the classified resin flakes, wherein the recycled resin has an oligomer content of not more than 1% by mass.
    Type: Application
    Filed: March 5, 2012
    Publication date: September 20, 2012
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Yasuo KURACHI, Akira OHIRA, Ryuji KITANI, Yasuharu SAITA, Masashi MAMINO
  • Publication number: 20120095129
    Abstract: Disclosed is a resin composition comprising (A) a polyester resin or a polycarbonate resin, (B) a polyethylene resin, (C) an aromatic compound other than the polyester resin and the polycarbonate resin, the aromatic compound having a residual carbon rate of not less than 20% by mass, and (D) a flame retardant, wherein the polyethylene resin is dispersed as crystal particles in the resin composition, and the content of the polyethylene resin crystal particles having a major axis diameter of 0.1 to 10 ?m and an aspect ratio of 1 to 10 is not less than 60% by number based on the total polyethylene resin crystal particle number.
    Type: Application
    Filed: October 7, 2011
    Publication date: April 19, 2012
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Masashi MAMINO, Yasuo KURACHI, Ryuji KITANI, Yasuharu SAITA
  • Publication number: 20120051810
    Abstract: A heating fixation belt is disclosed, comprising an insulating resin layer containing fibers, a heating layer containing an electrically conductive material dispersed in a resin and having a pair of feed electrodes provided on both ends and a releasing layer, which are sequentially provided in that order. An image forming apparatus comprising the heating fixation belt is also disclosed.
    Type: Application
    Filed: August 22, 2011
    Publication date: March 1, 2012
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Eiichi YOSHIDA, Susumu SUDO, Yasuo KURACHI, Izumi MUKOYAMA
  • Patent number: 8103202
    Abstract: A transfer belt for electrophotography comprises at least a polyphenylene sulfide resin and a conductive agent, preferably further a nylon resin, wherein a deviation in surface resistivity is 1 or less; and an image-forming apparatus comprises a latent-image supporting member, and a transfer member that supports a toner image transferred thereon from the latent-image supporting member and transfer the supported toner image onto an image-receiving material, comprising at least a polyphenylene sulfide resin and a conductive agent, and having a deviation in surface resistivity of 1 or less.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: January 24, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Yasuo Kurachi
  • Patent number: 8029908
    Abstract: A resin composition comprises a polyphenylene sulfide resin and a nylon resin having a ?-parameter of 1.3 or more at 25° C., and has one glass transition temperature, and an image-forming apparatus comprises: a latent-image supporting member, and an intermediate transfer member that supports a toner image transferred thereon from the latent-image supporting member and transfers the supported toner image onto an image-receiving material, wherein the intermediate transfer member comprises a polyphenylene sulfide resin and a nylon resin having a ?-parameter of 1.3 or more at 25° C., and has one glass transition temperature.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: October 4, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Yasuo Kurachi
  • Publication number: 20110230625
    Abstract: Provide is a flame-retardant polyester resin composition exhibiting excellent flame-retardant performance, specifically flame self-extinction performance and excellent mechanical performance such as elastic modulus, bending strength, and impact strength. Also provided is a flame-retardant polyester resin composition exhibiting excellent flame-retardant performance, specifically flame self-extinction performance and excellent mechanical performance such as elastic modulus, bending strength, and impact strength, even when at least one of a polyester resin and a polycarbonate resin obtained from molded products having become waste materials is recycled. A flame-retardant polyester resin composition comprising: (A) 50-80% by mass of a polyethylene terephthalate (PET), (B) 5-40% by mass of a polycarbonate resin, (C) 5-30% by mass of a polymer of a glass transition temperature Tg of less than 35° C., (D) 0.
    Type: Application
    Filed: March 14, 2011
    Publication date: September 22, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Yasuo KURACHI, Akira OHIRA, Hiroshi ONO, Kazuyoshi OTA
  • Publication number: 20110229673
    Abstract: Provide is a flame-retardant polyester resin composition exhibiting excellent flame-retardant performance, specifically flame self-extinction performance and excellent injection moldability and blow moldability by biaxially-stretch blow molding method, by solving problem of poor injection moldability of the conventional polyester. A flame-retardant polyester resin composition comprising: (A) 50-80% by mass of a polyester resin, (B) 10-40% by mass of a polycarbonate resin, (C) 5-30% by mass of a polymer of a glass transition temperature Tg of less than 35° C., and (D) 0.5-5% by mass of a polymer of a carbon residue rate resin of at least 15%.
    Type: Application
    Filed: March 14, 2011
    Publication date: September 22, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Yasuo KURACHI, Akira OHIRA, Hiroshi ONO, Kazuyoshi OTA
  • Patent number: 8007915
    Abstract: A resin composition comprises a polyphenylene sulfide resin and a nylon resin having a ?-parameter of less than 1.3 at 25° C., and has one glass transition temperature, and an image-forming apparatus comprises a latent-image supporting member, and an intermediate transfer member that supports a toner image transferred thereon from the latent-image supporting member, transfers the supported toner image onto an image receiving material, the intermediate transfer member comprising a polyphenylene sulfide resin and a nylon resin having a ?-parameter of less than 1.3 at 25° C., and has one glass transition temperature.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: August 30, 2011
    Assignee: Konica Minolta Business Technoloigies, Inc.
    Inventor: Yasuo Kurachi
  • Publication number: 20110196124
    Abstract: The present invention relates to a method for producing an annular belt made of polyimide comprising; a) joining both ends of a sheet made of a polyimide precursor to form an annular belt; and b) performing an imidizing reaction of the polyimide precursor.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 11, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventor: Yasuo KURACHI
  • Publication number: 20110054092
    Abstract: A method for manufacturing a nonflammable polyester resin composition comprising: making a polymer mixture containing the following (A) to (E) components in a melted state pass through a space between two parallel faces, with a face-to-face distance x being set to 5 mm or less; (A) a polyester resin of 40 to 80% by weight; (B) a polycarbonate resin of 5 to 40% by weight; (C) a rubbery polymer of 5 to 30% by weight; (D) a polyphenylene sulfide resin and/or a phenol resin of 2 to 20% by weight; and (E) a phosphorus-containing acid ester compound and/or a polyamide resin of 0.1 to 25% by weight.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 3, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Yasuo KURACHI, Akira OHIRA
  • Publication number: 20100266785
    Abstract: An intermediate transfer member that is provided with a base member containing polyphenylene sulfide and polyamide, and a semi-conductive inorganic layer having a volume specific resistance in the range from 1×107 ?cm to 1×1013 ?cm, that is formed on the base member, a method for manufacturing such an intermediate transfer member in which the inorganic layer is formed by means a plasma CVD method, and an image-forming apparatus equipped with such an intermediate transfer member.
    Type: Application
    Filed: April 2, 2010
    Publication date: October 21, 2010
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventors: Yasuo Kurachi, Hiroshi Tanaka, Masahiko Adachi, Kouji Nishimura, Toshio Tsukamoto, Katsumi Furusawa, Yoshiyuki Mizumo, Masatoshi Yamaguchi