Patents by Inventor Akitake Nakamura

Akitake Nakamura 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).

  • Vinylsulfonic anhydride, method for producing same, and method for producing vinylsulfonyl fluoride
    Patent number: 11649205
    Abstract: The present disclosure is directed to provide a vinylsulfonic anhydride which is useful as a synthetic intermediate for synthesis of a fluorinated monomer. It is also directed to efficiently produce the vinylsulfonic anhydride. It is further directed to efficiently produce a fluorinated monomer using the vinylsulfonic anhydride. A vinylsulfonic anhydride of the present disclosure is expressed by the general formula (1). Further, a process for producing a vinylsulfonic anhydride of the present disclosure includes making a vinylsulfonic acid compound represented by the general formula (2) come in contact and be mixed with an anhydridization agent.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: May 16, 2023
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Nobuyuki Uematsu, Hideki Date, Yasuhiro Nagato, Akitake Nakamura, Kenichi Yakigaya
  • VINYLSULFONIC ANHYDRIDE, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING VINYLSULFONYL FLUORIDE
    Publication number: 20210269395
    Abstract: The present disclosure is directed to provide a vinylsulfonic anhydride which is useful as a synthetic intermediate for synthesis of a fluorinated monomer. It is also directed to efficiently produce the vinylsulfonic anhydride. It is further directed to efficiently produce a fluorinated monomer using the vinylsulfonic anhydride. A vinylsulfonic anhydride of the present disclosure is expressed by the general formula (1). Further, a process for producing a vinylsulfonic anhydride of the present disclosure includes making a vinylsulfonic acid compound represented by the general formula (2) come in contact and be mixed with an anhydridization agent.
    Type: Application
    Filed: June 20, 2019
    Publication date: September 2, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Nobuyuki UEMATSU, Hideki DATE, Yasuhiro NAGATO, Akitake NAKAMURA, Kenichi YAKIGAYA
  • MWF-type zeolite
    Patent number: 10625240
    Abstract: An MWF-type zeolite, wherein, when the heights of peaks around 2?=11.1 and 13.8° in a peak obtained by X-ray diffraction are defined as A and B, respectively, 0.63?B/A?0.80 satisfied.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: April 21, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Saya Maeda, Akitake Nakamura, Takayuki Akaogi
  • MWF-TYPE ZEOLITE
    Publication number: 20180280924
    Abstract: An MWF-type zeolite, wherein, when the heights of peaks around 2?=11.1 and 13.8° in a peak obtained by X-ray diffraction are defined as A and B, respectively, 0.63?B/A?0.80 satisfied.
    Type: Application
    Filed: June 22, 2017
    Publication date: October 4, 2018
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Saya MAEDA, Akitake NAKAMURA, Takayuki AKAOGI
  • Composition and polymer
    Patent number: 9738757
    Abstract: Disclosed is a composition comprising (A) at least one compound selected from the group consisting of an ether compound having two or more ether groups, a trivalent phosphorus compound, and a ketone compound, (B) a boron trihalide, and (C) an episulfide compound.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: August 22, 2017
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Akitake Nakamura, Takeshi Endo
  • Composition and Polymer
    Publication number: 20160222168
    Abstract: Disclosed is a composition comprising (A) at least one compound selected from the group consisting of an ether compound having two or more ether groups, a trivalent phosphorus compound, and a ketone compound, (B) a boron trihalide, and (C) an episulfide compound.
    Type: Application
    Filed: March 25, 2016
    Publication date: August 4, 2016
    Applicant: Asahi Kasei Chemicals Corporation
    Inventors: Akitake Nakamura, Takeshi Endo
  • Process for preparing episulfide compounds
    Patent number: 9359324
    Abstract: Provided is a method for producing an episulfide compound, the method including a step of thiating epoxy groups of (B) an epoxy compound by a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound having two or more hydroxyl groups.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: June 7, 2016
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Akitake Nakamura, Takeshi Endo
  • Composition and polymer
    Patent number: 9334371
    Abstract: Disclosed is a composition comprising (A) at least one compound selected from the group consisting of an ether compound having two or more ether groups, a trivalent phosphorus compound, and a ketone compound, (B) a boron trihalide, and (C) an episulfide compound.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: May 10, 2016
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Akitake Nakamura, Takeshi Endo
  • Process for Preparing Episulfide Compounds
    Publication number: 20150197501
    Abstract: Provided is a method for producing an episulfide compound, the method including a step of thiating epoxy groups of (B) an epoxy compound by a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound having two or more hydroxyl groups.
    Type: Application
    Filed: March 13, 2015
    Publication date: July 16, 2015
    Applicant: Asahi Kasei Chemicals Corporation
    Inventors: Akitake Nakamura, Takeshi Endo
  • Process for preparing episulfide compounds
    Patent number: 9051293
    Abstract: Provided is a method for producing an episulfide compound, the method including a step of thiating epoxy groups of (B) an epoxy compound by a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound having two or more hydroxyl groups.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: June 9, 2015
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Akitake Nakamura, Takeshi Endo
  • Composition and Polymer
    Publication number: 20140121293
    Abstract: Disclosed is a composition comprising (A) at least one compound selected from the group consisting of an ether compound having two or more ether groups, a trivalent phosphorus compound, and a ketone compound, (B) a boron trihalide, and (C) an episulfide compound.
    Type: Application
    Filed: July 18, 2012
    Publication date: May 1, 2014
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Akitake Nakamura, Takeshi Endo
  • Process for Preparing Episulfide Compounds
    Publication number: 20140107350
    Abstract: Provided is a method for producing an episulfide compound, the method including a step of thiating epoxy groups of (B) an epoxy compound by a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound having two or more hydroxyl groups.
    Type: Application
    Filed: April 20, 2012
    Publication date: April 17, 2014
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Akitake Nakamura, Takeshi Endo