Patents by Inventor Hidefumi Harada

Hidefumi Harada 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: 20150267006
    Abstract: The present invention is to provide a process for preparing a highly polymerized aromatic polycarbonate resin, which comprises the steps of a highly polymerizing step for reacting an aromatic polycarbonate prepolymer and an aliphatic diol compound in the presence of a transesterification catalyst to obtain a highly polymerized aromatic polycarbonate resin, a cyclic carbonate removal step for removing at least part of the cyclic carbonate by-produced in the above highly polymerizing step out of the reaction system, and a recycle step of hydrolyzing the cyclic carbonate removed in the cyclic carbonate removal step to obtain an aliphatic diol compound and using the obtained aliphatic diol compound as at least a part of the aliphatic diol compound to be used in the highly polymerizing step.
    Type: Application
    Filed: November 15, 2013
    Publication date: September 24, 2015
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yoshinori Isahaya, Atsushi Hirashima, Hidefumi Harada, Maki Ito, Jun-ya Hayakawa, Takehiko Isobe, Taichi Tokutake, Hongyu Liu, Yousuke Shinkai
  • Publication number: 20150232613
    Abstract: The present invention provides a method for producing a branched aromatic polycarbonate resin that is molecular weight-increased, which comprises subjecting an aromatic polycarbonate prepolymer and a linking agent comprising a trifunctional or more of an aliphatic polyol compound to transesterification reaction in the presence of a transesterification catalyst under a reduced pressure condition.
    Type: Application
    Filed: August 7, 2013
    Publication date: August 20, 2015
    Inventors: Yoshinori Isahaya, Atsushi Hirashima, Hidefumi Harada, Maki Ito, Jun-ya Hayakawa, Takehiko Isobe, Taichi Tokutake, Yousuke Shinkai
  • Publication number: 20150133611
    Abstract: A high molecular weight polycarbonate resin is continuously produced by subjecting an aromatic polycarbonate prepolymer and an aliphatic diol compound to a linking and highly polymerizing reaction. Even an aliphatic diol compound having a comparatively low boiling point can be allowed to efficiently contribute to the linking and highly polymerizing reaction. An aromatic polycarbonate prepolymer is produced by a polycondensation reaction between an aromatic dihydroxy compound and a diester carbonate, adding an aliphatic diol compound having an aliphatic group bonding to a terminal hydroxyl group to obtain a prepolymer mixture, and subjecting the resulting prepolymer mixture to a linking and highly polymerizing reaction under reduced pressure.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 14, 2015
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yoshinori Isahaya, Atsushi Hirashima, Hidefumi Harada, Maki Ito, Jun-ya Hayakawa, Takehiko Isobe, Taichi Tokutake, Yousuke Shinkai
  • Patent number: 8969505
    Abstract: A branched aromatic polycarbonate resin having a degree of branching (N value) controlled within a specific range is manufactured by subjecting an aromatic polycarbonate prepolymer that has a branched structure introduced using a specific amount of a branching agent to molecular-weight-increasing linking reaction with an aliphatic diol compound in the presence of a transesterification catalyst under the condition of a reduced pressure. The amount (A) of the branching agent used is adjusted on the basis of the correlation between the amount (A) of the branching agent used and the N value of the branched aromatic polycarbonate resin.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: March 3, 2015
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yoshinori Isahaya, Atsushi Hirashima, Hidefumi Harada, Maki Ito, Jun-ya Hayakawa, Takehiko Isobe, Taichi Tokutake, Yousuke Shinkai
  • Patent number: 8939631
    Abstract: A control apparatus is provided with a substrate disposed inside a main case and on which light sources are mounted. A surface panel in which light-source display windows are formed at positions opposite the light sources, is also disposed in the main case. The outer rim of the surface of the surface panel facing the main case is affixed to the front-surface rim of the main case with an insulating part sandwiched therebetween.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: January 27, 2015
    Assignee: Azbil Corporation
    Inventors: Noriya Uchiumi, Hidefumi Harada, Hiroshi Koga
  • Publication number: 20140371404
    Abstract: The present invention provides an improved method for continuously producing a high-molecular-weight polycarbonate resin by carrying out a linking and highly-polymerizing reaction of an aromatic polycarbonate prepolymer with an aliphatic diol compound wherein the retention time of the reaction mixture in the linking and highly-polymerizing reactor is shortened to achieve excellent performance.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 18, 2014
    Inventors: Yoshinori Isahaya, Atsushi Hirashima, Hidefumi Harada, Maki Ito, Jun-ya Hayakawa, Takehiko Isobe, Taichi Tokutake, Yousuke Shinkai
  • Publication number: 20140206826
    Abstract: The present inventions provide a novel polycarbonate copolymer having high fluidity and high molecular weight which is formed of a structural unit derived from an aliphatic diol compound and a structural unit derived from an aromatic dihydroxy compound, having a structure represented by the formula (III): having the content of the structural unit derived from the aliphatic diol compound of 1-30 mol %, having the Q-value (280° C., 160 kg load) in the range from 0.02 to 1.
    Type: Application
    Filed: May 18, 2012
    Publication date: July 24, 2014
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yoshinori Isahaya, Atsushi Hirashima, Hidefumi Harada, Maki Ito, Jun-ya Hayakawa, Takehiko Isobe, Taichi Toku take, Yousuke Shinkai
  • Patent number: 8763467
    Abstract: A pressure sensor device has a sensor detecting pressure of a gas that is introduced from the outside, a heater for heating the sensor, a package containing the sensor and the heater, a circuit portion producing an output signal that represents the pressure of the gas based on the detection output detected by the sensor, and a circuit containing portion containing the circuit portion. The package and the circuit containing portion are structured from separate cases and are disposed separately with a connecting structural member interposed therebetween. The connecting structural member 90 includes electrode lead pins connecting between the sensor within the package and the circuit portion within the circuit containing portion, insulated pipes for covering the outer peripheries of the electrode lead pins, and coil springs covering the outer peripheries of the insulated pipes.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: July 1, 2014
    Assignee: Azbil Corporation
    Inventors: Takuya Ishihara, Hidefumi Harada, Masashi Sekine
  • Publication number: 20130317182
    Abstract: [Problem] To provide a process for manufacturing, easily and using a conventional branching agent, a branched aromatic polycarbonate resin which has both a sufficiently high molecular weight and a desired degree of branching. [Solution] A branched aromatic polycarbonate resin having a degree of branching (N value) controlled within a specific range is manufactured by subjecting an aromatic polycarbonate prepolymer that has a branched structure introduced using a specific amount of a branching agent to molecular-weight-increasing linking reaction with an aliphatic diol compound in the presence of a transesterification catalyst under the condition of a reduced pressure. The amount (A) of the branching agent used in adjusted on the basis of the correlation between the amount (A) of the branching agent used and the N value of the branched aromatic polycarbonate resin.
    Type: Application
    Filed: February 9, 2012
    Publication date: November 28, 2013
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yoshinori Isahaya, Atsushi Hirashima, Hidefumi Harada, Maki Ito, Jun-ya Hayakawa, Takehiko Isobe, Taichi Tokutake, Yousuke Shinkai
  • Publication number: 20120247216
    Abstract: A pressure sensor device has a sensor detecting pressure of a gas that is introduced from the outside, a heater for heating the sensor, a package containing the sensor and the heater, a circuit portion producing an output signal that represents the pressure of the gas based on the detection output detected by the sensor, and a circuit containing portion containing the circuit portion. The package and the circuit containing portion are structured from separate cases and are disposed separately with a connecting structural member interposed therebetween. The connecting structural member 90 includes electrode lead pins connecting between the sensor within the package and the circuit portion within the circuit containing portion, insulated pipes for covering the outer peripheries of the electrode lead pins, and coil springs covering the outer peripheries of the insulated pipes.
    Type: Application
    Filed: March 14, 2012
    Publication date: October 4, 2012
    Applicant: YAMATAKE CORPORATION
    Inventors: Takuya Ishihara, Hidefumi Harada, Masashi Sekine
  • Publication number: 20120155117
    Abstract: A control apparatus is provided with a substrate disposed inside a main case and on which light sources are mounted. A surface panel in which light-source display windows are formed at positions opposite the light sources, is also disposed in the main case. The outer rim of the surface of the surface panel facing the main case is affixed to the front-surface rim of the main case with an insulating part sandwiched therebetween.
    Type: Application
    Filed: August 25, 2010
    Publication date: June 21, 2012
    Applicant: YAMATAKE CORPORATION
    Inventors: Noriya Uchiumi, Hidefumi Harada, Hiroshi Koga
  • Patent number: 7703329
    Abstract: There is provided a pressure sensor having: a sensor chip (30) which detects a pressure; a base plate (20 (21, 22)) which supports the sensor chip (30); and a support diaphragm (50) which is bonded to the base plate (20 (21, 22)) and supports the base plate (20 (21, 22)), wherein the pressure sensor (1) has a structure in which the support diaphragm (50) is joined to a package (10), and the sensor chip (30) and the base plate (20 (21, 22)) are supported in the package through the support diaphragm (50) alone, thereby constantly and accurately detecting a pressure without being affected by a heat stress caused due to heat from the outside.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: April 27, 2010
    Assignee: Yamatake Corporation
    Inventors: Masashi Sekine, Hidefumi Harada
  • Publication number: 20080245154
    Abstract: There is provided a pressure sensor having: a sensor chip (30) which detects a pressure; a base plate (20 (21, 22)) which supports the sensor chip (30); and a support diaphragm (50) which is bonded to the base plate (20 (21, 22)) and supports the base plate (20 (21, 22)), wherein the pressure sensor (1) has a structure in which the support diaphragm (50) is joined to a package (10), and the sensor chip (30) and the base plate (20 (21, 22)) are supported in the package through the support diaphragm (50) alone, thereby constantly and accurately detecting a pressure without being affected by a heat stress caused due to heat from the outside.
    Type: Application
    Filed: June 13, 2005
    Publication date: October 9, 2008
    Inventors: Masashi Sekine, Hidefumi Harada
  • Publication number: 20040015268
    Abstract: A display and control unit has a first communication means for communicating with individual controllers 9 corresponding to plural object control sections 31, a controller selection means 241 for selecting a target individual controller, a LED address display means 231 for displaying a place of the target individual controller, LED state display means 234, 235 for displaying a current state of the object control section, a mode switch means 243 for switching a current state mode, a set state mode, and a display mode, and state set means 245 and 246 for sending set data to the individual controllers during the data set mode.
    Type: Application
    Filed: March 3, 2003
    Publication date: January 22, 2004
    Inventors: Hiroyuki Kato, Ryoichi Mitaku, Hidefumi Harada, Yoshihiro Miyajima, Hirofumi Hirayama
  • Patent number: 6359163
    Abstract: A process for producing a dialkyl carbonate which comprises performing reaction of allophanate represented by the following general formula (1) and an alkyl alcohol represented by the following general formula (2) as raw materials, thereby producing a dialkyl carbonate represented by the following general formula (3). RO—CO—NH—CO—NH2   (1) ROH  (2) RO—CO—OR  (3) wherein R is an alkyl group.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: March 19, 2002
    Assignee: Mitsubishi Gas Chemical Company Inc.
    Inventors: Masamichi Mizukami, Yoshihisa Arai, Hidefumi Harada
  • Publication number: 20010051740
    Abstract: A process for producing a dialkyl carbonate which comprises performing reaction of allophanate represented by the following general formula (1) and an alkyl alcohol represented by the following general formula (2) as raw materials, thereby producing a dialkyl carbonate represented by the following general formula (3).
    Type: Application
    Filed: June 11, 2001
    Publication date: December 13, 2001
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Masamichi Mizukami, Yoshihisa Arai, Hidefumi Harada
  • Patent number: 6031122
    Abstract: A process for producing a dialkyl carbonate which comprises reacting at least one member selected from the group consisting of urea and alkyl carbamate with alcohol in the presence of both a catalyst and a high boiling point organic compound having a boiling point of 180.degree. C. or above.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: February 29, 2000
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Masamichi Mizukami, Yoshihisa Arai, Hidefumi Harada, Takuo Ohshida, Hiroaki Ohgi
  • Patent number: 5980445
    Abstract: A process for producing diaryl carbonate which comprises (A) a step for producing dialkyl carbonate represented by the general formula RO--CO--OR by reacting urea with alkyl alcohol represented by the general formula ROH, (B) a step for producing both alkyl aryl carbonate represented by the general formula RO--CO--OAr and diaryl carbonate represented by the general formula ArO--CO--OAr by reacting dialkyl carbonate produced in the above step (A) with an aromatic hydroxy compound represented by the general formula ArOH, and (C) a step for producing diaryl carbonate represented by the general formula ArO--CO--OAr by allowing to conduct disproportionation reaction of unreacted alkyl aryl carbonate produced in the above step (B), wherein R shows an alkyl group and Ar shows a non-substituted phenyl group or a phenyl group substituted by alkyl group, alkoxy group, aryl group, aryloxy group or halogen.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: November 9, 1999
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Masamichi Mizukami, Yoshihisa Arai, Hidefumi Harada, Takuo Ohshida, Hiroaki Ohgi
  • Patent number: 5736239
    Abstract: The present invention provides a novel coating layer or a film having a flip-flop property, comprising a mica-like red iron oxide of less than 0.25 .mu.m in thickness containing aluminum in solid solution and a solid resin component, with the proportion of said iron oxide being 0.1-20 parts by weight per 100 parts by weight of the solid resin component.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: April 7, 1998
    Assignee: Titan Kogyo Kabushiki Kaisha
    Inventors: Hidefumi Harada, Shigeru Nagaoka
  • Patent number: 5714627
    Abstract: A process for producing an aromatic carbonate which comprises: reacting a dialkyl carbonate represented by general formula (1) with an aromatic carboxylic acid aryl ester represented by general formula (2) in the presence of a catalyst to produce an aromatic carbonate represented by one or both of general formulae (3) and (4):R--OCOO--R (1)Ar'--COO--Ar (2)Ar--OCOO--R (3)Ar--OCOO--Ar (4)wherein R represents an alkyl group having from 1 to 4 carbon atoms, and Ar and Ar' each represents an unsubstituted phenyl group or a phenyl group substituted by a substituent selected from the group consisting of alkyl, alkoxy, aryl, aryloxy and a halogen atom.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: February 3, 1998
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Masamichi Mizukami, Takuo Ohshida, Hiroaki Ohgi, Hidefumi Harada