Patents by Inventor Hidenobu Murofushi

Hidenobu Murofushi 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: 20200165411
    Abstract: To provide a curable composition capable of obtaining a cured product which has a high Abbe number, is excellent in transparency and crack resistance, and is capable of suppressing a decrease in transparency over a long period of time; and such a cured product. This curable composition comprises solid silica fine particles A, of which an organic component is at most 5 mass % and the median diameter is from 5 to 20 nm, (meth)acrylate B which has an alicyclic condensed ring, and of which the glass transition temperature of the homopolymer is from 90 to 350° C., epoxy(meth)acrylate C which has no aromatic ring, and in which the amount of substance of ethylenically unsaturated groups is from 0.1 to 3.
    Type: Application
    Filed: January 30, 2020
    Publication date: May 28, 2020
    Applicant: AGC Inc.
    Inventors: Keisuke TAKAGI, Tomoaki SAKURADA, Hidenobu MUROFUSHI
  • Publication number: 20200157256
    Abstract: To provide a curable composition whereby it is possible to obtain a cured product having a high Abbe number and being excellent in transparency, crack resistance and releasability; and such a cured product. A curable composition comprises, in specific ratios, surface-modified metal oxide particles (A) having (meth)acryloyl-group-containing surface-modifying groups on the surface of the metal oxide particles, a compound (B) having a fluorine atom and at least one (meth)acryloyl group, a compound (C) having a urethane bond or —OCH2CH(OH)CH2—, having at least two (meth)acryloyl groups and having a mass-average molecular weight of at least 1,000, a compound (D) having no unsaturated bond-containing ring structure and having at least one (meth)acryloyl group, and a polymerization initiator (E).
    Type: Application
    Filed: May 30, 2018
    Publication date: May 21, 2020
    Applicant: AGC Inc.
    Inventors: Keisuke TAKAGI, Jun YOSHIDA, Hidenobu MUROFUSHI
  • Publication number: 20200139328
    Abstract: To provide methods for producing a wet gel and a xerogel, in which variation in gel thickness is little even without highly controlling the levelness of the mold and the gels are less likely to break at the time of gelation or demolding. The method for producing a wet gel comprises, in such a state that a second liquid layer 14 made of a second liquid containing a gel raw material, is present on a first liquid layer 12 made of a first liquid, letting the second liquid layer 14 be gelled. The method for producing a xerogel comprises drying the wet gel thereby produced or a solvent-substituted gel obtainable by subjecting said wet gel to solvent substitution.
    Type: Application
    Filed: January 9, 2020
    Publication date: May 7, 2020
    Applicant: AGC Inc.
    Inventor: Hidenobu MUROFUSHI
  • Patent number: 10457756
    Abstract: To provide a fluorinated compound capable of obtaining a cured product which is excellent in heat resistance and mold release and has a high Abbe number; a curable composition containing such a compound; and a cured product which is excellent in heat resistance and mold release and has a high Abbe number. The fluorinated compound is represented by the following formula (A): [Z—OCH2CF2CF2CF2OCFHCF2—X—]nQ??(A) where n is an integer of at least 1, Q is a n-valent organic group, X is —O—, —NH— or —S—, and Z is a group having at least one polymerizable functional group.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: October 29, 2019
    Assignee: AGC Inc.
    Inventors: Jun Yoshida, Keisuke Takagi, Hidenobu Murofushi, Tomoaki Sakurada
  • Publication number: 20180282465
    Abstract: To provide surface-modified metal oxide particles which are readily dispersed in a liquid fluorinated compound having a high fluorine atom content, and a method for producing them; a dispersion liquid having a high Abbe number and being excellent in transparency; and a curable composition from which a cured product having a high Abbe number and being excellent in transparency can be obtained, and its cured product. Surface-modified metal oxide particles (A) comprising metal oxide particles having a refractive index of at least 1.9 and on their surface, specific fluoroalkyl group-containing surface-modifying groups and specific (meth)acryloyl group-containing surface-modifying groups; a dispersion liquid containing the surface-modified metal oxide particles (A) and a fluorinated compound which has a fluorine atom content of at least 20 mass % and which is liquid at 25° C.
    Type: Application
    Filed: June 6, 2018
    Publication date: October 4, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Keisuke TAKAGI, Jun Yoshida, Hidenobu Murofushi
  • Publication number: 20180273656
    Abstract: To provide a curable composition whereby it is possible to obtain a cured product having a high Abbe number and being excellent in transparency, crack resistance and releasability; and such a cured product. A curable composition comprises, in specific ratios, surface-modified metal oxide particles (A) having (meth)acryloyl-group-containing surface-modifying groups on the surface of the metal oxide particles, a compound (B) having a fluorine atom and at least one (meth)acryloyl group, a compound (C) having a urethane bond or —OCH2CH(OH)CH2—, having at least two (meth)acryloyl groups and having a mass-average molecular weight of at least 1,000, a compound (D) having no unsaturated bond-containing ring structure and having at least one (meth)acryloyl group, and a polymerization initiator (E).
    Type: Application
    Filed: May 30, 2018
    Publication date: September 27, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Keisuke TAKAGI, Jun YOSHIDA, Hidenobu MUROFUSHI
  • Publication number: 20180264784
    Abstract: A laminated glass includes, in the following order, a first glass plate, a first transparent adhesive layer, a transparent heat-insulating layer having interconnected pores, a second transparent adhesive layer, and a second glass plate. The laminated glass has a value of A in the expression (1) of 7.0×105 or smaller and a value of B in the expression (2) of 35 or larger. In the expressions, D is a pore diameter (nm) of the interconnected pores of the transparent heat-insulating layer, P is a porosity of the transparent heat-insulating layer, di is a thickness (mm) of the transparent heat-insulating layer, dg is a sum (mm) of a thickness of the first glass plate and a thickness of the second glass plate, and da is a sum (mm) of a thickness of the first transparent adhesive layer and a thickness of the second transparent adhesive layer; [ Math . ? 1 ] A = D 3 ? Pd i ( 1 ) B = d g + 3.3 ? d e + 0.75 ? d i ? ( D + 260.8 0.
    Type: Application
    Filed: May 22, 2018
    Publication date: September 20, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Chieko MUROFUSHI, Hidenobu MUROFUSHI
  • Publication number: 20180072830
    Abstract: To provide a fluorinated compound capable of obtaining a cured product which is excellent in heat resistance and mold release and has a high Abbe number; a curable composition containing such a compound; and a cured product which is excellent in heat resistance and mold release and has a high Abbe number. The fluorinated compound is represented by the following formula (A): [Z—OCH2CF2CF2CF2OCFHCF2—X-]nQ??(A) where n is an integer of at least 1, Q is a n-valent organic group, X is —O—, —NH— or —S—, and Z is a group having at least one polymerizable functional group.
    Type: Application
    Filed: November 20, 2017
    Publication date: March 15, 2018
    Applicant: Asahi Glass Company, Limited
    Inventors: Jun YOSHIDA, Keisuke TAKAGI, Hidenobu MUROFUSHI, Tomoaki SAKURADA
  • Patent number: 7083705
    Abstract: The invention provides a process for producing a fluorine-containing compound from an inexpensive material. Namely, Compound I such as RACH2OH is reacted with Compound II such as XCORB to form Compound III such as RACH2OCORB, followed by fluorination in a liquid phase to form Compound IV such as RAFCF2OCORBF, which is converted to Compound V such as RAFCOF and/or Compound VI such as RBFCOF. RA is an alkyl group or the like, RB is a perhalogenoalkyl group or the like, RAF and RBF are fluorinated RA and RB, and X is halogen.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: August 1, 2006
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Hidenobu Murofushi
  • Patent number: 7071272
    Abstract: The present invention provides a method for preparing a compound of CF3CF2CF2OCF?CF2 by pyrolyzing a compound expressed by CF3CF2CF2OCF(CF3)COOCF2CF(CF3)OCF2CF2CF3 in a gas phase at a temperature of from 200° C. to 500° C.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: July 4, 2006
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Masakuni Sato, Hidenobu Murofushi, Koichi Yanase, Yasuhiro Suzuki
  • Patent number: 7058271
    Abstract: A plastic optical fiber low in attenuation in a high order mode and small in mode dispersion, is presented. The plastic optical fiber comprises at least a core and a clad surrounding the core, characterized in that the core has a refractive index which gradually decreases from the core center towards the outside in the radial direction of the plastic optical fiber, and the refractive index of the clad is lower than the refractive index of the core center and higher than the refractive index of the core periphery.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: June 6, 2006
    Assignees: Asahi Glass Company, Limited
    Inventors: Yasuhiro Koike, Takaaki Ishigure, Hidenobu Murofushi, Yuji Watanabe, Tsuyoshi Onishi
  • Patent number: 7053237
    Abstract: A process for producing a fluorinated ester through a small number of steps, is presented. The process for producing a fluorinated ester, comprises a transesterification step in which RAF—COOCF2—RAF and RA—CH2OH are subjected to a transesterification reaction to obtain RAF—COOCH2—RA, and a fluorination step in which the obtained compound is fluorinated to obtain a reaction product containing RAF—COOCF2—RAF. Here, in the formulae, RA is a monovalent organic group, and RAF is the same group as RA or a monovalent organic group obtained by fluorination of RA.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: May 30, 2006
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Hidenobu Murofushi, Masakuni Sato, Masahiro Ito, Koichi Yanase, Yasuhiro Suzuki
  • Publication number: 20050261516
    Abstract: A process for producing a fluorinated ester through a small number of steps, is presented. The process for producing a fluorinated ester, comprises a transesterification step in which RAF—COOCF2—RAF and RA—CH2OH are subjected to a transesterification reaction to obtain RAF—COOCH2—RA, and a fluorination step in which the obtained compound is fluorinated to obtain a reaction product containing RAF—COOCF2—RAF. Here, in the formulae, RA is a monovalent organic group, and RAF is the same group as RA or a monovalent organic group obtained by fluorination of RA.
    Type: Application
    Filed: July 16, 2003
    Publication date: November 24, 2005
    Applicant: ASAHI GLASS COMPANY
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Hidenobu Murofushi, Masakuni Sato, Masahiro Ito, Koichi Yanase, Yasuhiro Suzuki
  • Publication number: 20050232561
    Abstract: To provide a novel porous plastic optical transmission article which is easy to produce and excellent in heat resistance, flame retardancy, chemical resistance and solvent resistance and exhibits a low attenuation and a high bandwidth, and a process for its production. A porous plastic optical transmission article which is an optical transmission article made of an amorphous fluoropolymer containing substantially no C—H bond and which has a plurality of pores at least in a hollow tubular portion provided so as to surround the axial core portion of the optical transmission article. For example, an optical fiber, etc.
    Type: Application
    Filed: February 22, 2005
    Publication date: October 20, 2005
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hidenobu Murofushi, Yuji Watanabe, Chikafumi Tanaka, Takaaki Ishigure
  • Patent number: 6951957
    Abstract: The invention provides a process for producing a fluorine-containing compound from an inexpensive material. Namely, Compound I such as RACH2OH is reacted with Compound II such as XCORB to form Compound III such as RACH2OCORB, followed by fluorination in a liquid phase to form Compound IV such as RAFCF2OCORBF, which is converted to Compound V such as RAFCOF and/or Compound VI such as RBFCOF. RA is an alkyl group or the like, RB is a perhalogenoalkyl group or the like, RAF and RBF are fluorinated RA and RB, and X is halogen.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: October 4, 2005
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Hidenobu Murofushi
  • Publication number: 20050207714
    Abstract: A plastic optical fiber low in attenuation in a high order mode and small in mode dispersion, is presented. The plastic optical fiber comprises at least a core and a clad surrounding the core, characterized in that the core has a refractive index which gradually decreases from the core center towards the outside in the radial direction of the plastic optical fiber, and the refractive index of the clad is lower than the refractive index of the core center and higher than the refractive index of the core periphery.
    Type: Application
    Filed: March 9, 2005
    Publication date: September 22, 2005
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Yasuhiro Koike, Takaaki Ishigure, Hidenobu Murofushi, Yuji Watanabe, Tsuyoshi Onishi
  • Publication number: 20050141834
    Abstract: To provide a low attenuation and high bandwidth type optical transmission article. An optical fiber having a sea and islands structure in which a dispersed phase as a low refractive index component is dispersed in a continuous phase as a high refractive index component.
    Type: Application
    Filed: February 28, 2005
    Publication date: June 30, 2005
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventor: Hidenobu Murofushi
  • Publication number: 20050020855
    Abstract: The invention provides a process for producing a fluorine-containing compound from an inexpensive material. Namely, Compound I such as RACH2OH is reacted with Compound II such as XCORB to form Compound III such as RACH2OCORB, followed by fluorination in a liquid phase to form Compound IV such as RAFCF2OCORBF, which is converted to Compound V such as RAFCOF and/or Compound VI such as RBFCOF. RA is an alkyl group or the like, RB is a perhalogenoalkyl group or the like, RAF and RBF are fluorinated RA and RB, and X is halogen.
    Type: Application
    Filed: August 11, 2004
    Publication date: January 27, 2005
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Hidenobu Murofushi
  • Publication number: 20040134419
    Abstract: To provide a device for refining a solid material and a process for refining it, whereby from the supply of the material to the operation for recovery of crystals can be carried out batch-wisely or continuously, and inclusion of foreign matters such as particles can be efficiently prevented. A device for refining an evaporable or sublimable solid material, which comprises a housing, and at least one rotatable roller for evaporation and at least one rotatable roller for precipitation, installed in the housing.
    Type: Application
    Filed: January 5, 2004
    Publication date: July 15, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Kazunori Chiba, Hidenobu Murofushi
  • Patent number: 6670511
    Abstract: A fluorine-containing diene represented by the formula 1: CF2═CF(CF2)nCXYOCF═CF2  Formula 1 wherein each of X and Y which are independent of each other, is an atom selected from a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, provided that X and Y are not simultaneously hydrogen atoms or fluorine atoms, and n is an integer of from 1 to 3.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: December 30, 2003
    Assignee: Asahi Glass Company Limited
    Inventors: Kimiaki Kashiwagi, Hidenobu Murofushi, Norihide Sugiyama, Masakuni Sato, Atsushi Watakabe