Patents by Inventor Kiyoshi Kawamura

Kiyoshi Kawamura 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: 20190275218
    Abstract: A suction discharge unit of a suction discharge device includes a first unit and a second unit. The second unit controls the pressure inside the first unit. The first unit includes a storage chamber and a water sealing chamber. The water sealing chamber includes a first chamber communicating with the storage chamber, and a second chamber is sealed from the first chamber by sealing water. A negative pressure control unit is disposed in the second chamber. The negative pressure control unit includes a liquid retaining part retaining a liquid, a control member including control holes, and a support tube supporting the control member. The negative pressure control unit controls the pressure of the first chamber by causing gas to flow from the second chamber into the first chamber via the control holes and the liquid based on the pressure of the second chamber and the pressure of the first chamber.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 12, 2019
    Inventors: Kiyoshi KURIHARA, Susumu TAKEUCHI, Kenichiro KAWAMURA, Hiroaki WADA
  • Publication number: 20190148649
    Abstract: A compound having a structure wherein at least 8-position or 9-position of fluoranthene is replaced by a nitrogen atom, a material for organic electroluminescence devices including the compound, and an organic electroluminescence device and an electronic equipment each including the material are provided. The compound is represented by formula (1): wherein A represents CR0 or N; R0 to R8 each independently represent a hydrogen atom or a substituent; at least one selected from R0 to R8 represents a substituent other than hydrogen atom; and groups selected from R0 to R8 which are bonded to adjacent carbon atoms may be bonded to each other to form a saturated or unsaturated ring structure.
    Type: Application
    Filed: January 16, 2019
    Publication date: May 16, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Takashi KASHIWAMURA, Kiyoshi Ikeda, Hironori Kawakami, Masahiro Kawamura
  • Patent number: 9944634
    Abstract: The present invention relates to pyrazolopyridine derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: April 17, 2018
    Assignee: RaQualia Pharma Inc.
    Inventors: Kiyoshi Kawamura, Tatsuya Yamagishi, Yoshimasa Arano, Mikio Morita
  • Patent number: 9901571
    Abstract: The present invention relates to novel compounds of a formula (I) or a pharmaceutically acceptable salt or solvate thereof, processes for their preparation, pharmaceutical compositions comprising them and their use in therapy, for example as modulators of the growth hormone secretagogue receptor (also referred to as the ghrelin receptor or GHSR-1a receptor) and/or for the treatment and/or prophylaxis of a disorder mediated by the ghrelin receptor.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: February 27, 2018
    Assignee: RaQualia Pharma Inc.
    Inventors: Yasuhiro Iwata, Kiyoshi Kawamura, Masaki Sudo, Kaoru Shimada, Shinichi Koizumi, Nobuyuki Takahashi, Keiko Obata, Makiko Kuroda
  • Patent number: 9873695
    Abstract: The present invention relates to novel compounds of formula (I) or a pharmaceutically acceptable salt or solvate thereof, processes for their preparation, pharmaceutical compositions containing them and their use in therapy, for example as modulators of the growth hormone secretagogue receptor (also referred to as the ghrelin receptor or GHSR1a receptor) and/or for the treatment and/or prophylaxis of a disorder mediated by the ghrelin receptor.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: January 23, 2018
    Assignee: RaQualia Pharma Inc.
    Inventors: Yasuhiro Iwata, Kiyoshi Kawamura, Masaki Sudo, Kaoru Shimada, Shinichi Koizumi, Nobuyuki Takahashi, Keiko Obata, Makiko Kuroda
  • Publication number: 20170304277
    Abstract: The present invention relates to novel compounds of a formula (I) or a pharmaceutically acceptable salt or solvate thereof, processes for their preparation, pharmaceutical compositions comprising them and their use in therapy, for example as modulators of the growth hormone secretagogue receptor (also referred to as the ghrelin receptor or GHSR-1a receptor) and/or for the treatment and/or prophylaxis of a disorder mediated by the ghrelin receptor.
    Type: Application
    Filed: November 2, 2015
    Publication date: October 26, 2017
    Applicant: RaQualia Pharma Inc.
    Inventors: Yasuhiro IWATA, Kiyoshi KAWAMURA, Masaki SUDO, Kaoru SHIMADA, Shinichi KOIZUMI, Nobuyuki TAKAHASHI, Keiko OBATA, Makiko KURODA
  • Publication number: 20170197961
    Abstract: The present invention relates to novel compounds of formula (I) or a pharmaceutically acceptable salt or solvate thereof, processes for their preparation, pharmaceutical compositions containing them and their use in therapy, for example as modulators of the growth hormone secretagogue receptor (also referred to as the ghrelin receptor or GHSRla receptor) and/or for the treatment and/or prophylaxis of a disorder mediated by the ghrelin receptor.
    Type: Application
    Filed: August 5, 2015
    Publication date: July 13, 2017
    Applicant: RaQualia Pharma Inc.
    Inventors: Yasuhiro IWATA, Kiyoshi KAWAMURA, Masaki SUDO, Kaoru SHIMADA, Shinichi KOIZUMI, Nobuyuki TAKAHASHI, Keiko OBATA, Makiko KURODA
  • Patent number: 9701658
    Abstract: The present invention relates to amide derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: July 11, 2017
    Assignee: RaQualia Pharma Inc.
    Inventors: Tatsuya Yamagishi, Kiyoshi Kawamura, Mikio Morita
  • Patent number: 9302991
    Abstract: The present invention relates to arylamide derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: April 5, 2016
    Assignee: RaQualia Pharma Inc.
    Inventors: Tatsuya Yamagishi, Kiyoshi Kawamura, Yoshimasa Arano, Mikio Morita
  • Patent number: 9187475
    Abstract: The present invention relates to pyrrolopyridinone derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: November 17, 2015
    Assignee: RaQualia Pharma Inc.
    Inventors: Kiyoshi Kawamura, Mikio Morita, Tatsuya Yamagishi
  • Publication number: 20150291582
    Abstract: The present invention relates to pyrazolopyridine derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.
    Type: Application
    Filed: October 31, 2013
    Publication date: October 15, 2015
    Applicant: RaQualia Pharma Inc.
    Inventors: Kiyoshi Kawamura, Tatsuya Yamagishi, Yoshimasa Arano, Mikio Morita
  • Publication number: 20150105393
    Abstract: The present invention relates to amide derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.
    Type: Application
    Filed: April 25, 2013
    Publication date: April 16, 2015
    Inventors: Tatsuya Yamagishi, Kiyoshi Kawamura, Mikio Morita
  • Publication number: 20150094306
    Abstract: The present invention relates to pyrrolopyridinone derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.
    Type: Application
    Filed: April 25, 2013
    Publication date: April 2, 2015
    Inventors: Kiyoshi Kawamura, Mikio Morita, Tatsuya Yamagishi
  • Publication number: 20140336377
    Abstract: The present invention relates to arylamide derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.
    Type: Application
    Filed: October 18, 2011
    Publication date: November 13, 2014
    Applicant: RAQUALIA PHARMA INC.
    Inventors: Tatsuya Yamagishi, Kiyoshi Kawamura, Yoshimasa Arano, Mikio Morita
  • Patent number: 8829026
    Abstract: The present invention relates to sulfamoyl benzoic acid heterobicyclic derivatives of the formula (I) or a pharmaceutically acceptable salt thereof or a prodrug thereof, processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of various disorders which are mediated via the TRPMb8 receptor.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: September 9, 2014
    Assignee: RaQualia Pharma Inc.
    Inventors: Kiyoshi Kawamura, Yuji Shishido, Masashi Ohmi
  • Patent number: 8710165
    Abstract: A multibranched polymer represented by the following formula (I), and a method for producing the multibranched polymer: where A represents an organic group having 3 or more branched chains, Xa represents a linking group containing any atom of Groups 14 to 16 in the Periodic Table, Y represents a functional group having a structure capable of having an active halogen atom, Q represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond, m1 represents any integer of 1 to the number of branched chains of A, m2 represents the number of branched chains of A, n1 represents an integer of 0 or 1 or more, and Ra represents an organic group that is not associated with the polymerization reaction.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: April 29, 2014
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Takeshi Niitani, Kiyoshi Kawamura, Akihiro Shirai
  • Publication number: 20130210858
    Abstract: The present invention relates to sulfamoyl benzoic acid heterobicyclic derivatives of the formula (I) or a pharmaceutically acceptable salt thereof or a prodrug thereof, processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of various disorders which are mediated via the TRPM8 receptor.
    Type: Application
    Filed: October 3, 2011
    Publication date: August 15, 2013
    Applicant: Raqualia Pharma Inc.
    Inventors: Kiyoshi Kawamura, Yuji Shishido, Masashi Ohmi
  • Patent number: 8362038
    Abstract: This invention provides a compound of formula (I): wherein R1 represents an alkyl group having from 1 to 4 carbon atoms or a halogen atom, R2 represents an alkyl group having from 1 to 4 carbon atoms, R3 represents a hydrogen atom or a hydroxy group, and A represents an oxygen atom or a group of the formula —C(R4)(R5)— (in which R4 represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms and R5 represents a hydroxy group or an alkoxy group having from 1 to 4 carbon atoms) or a pharmaceutically acceptable salts thereof. These compounds have 5-HT4 receptor agonistic activity, and thus are useful for the treatment of gastroesophageal reflux disease, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome or the like in mammalian, especially humans.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: January 29, 2013
    Assignee: Pfizer Inc.
    Inventors: Tomoki Kato, Kiyoshi Kawamura, Chikara Uchida
  • Patent number: 8252790
    Abstract: Disclosed is a compound represented by general formula (I) or a pharmaceutically acceptable salt thereof, which is useful as a selective antagonist of a 5-HT2B receptor. The compound and salt are useful for treatment or prevention of various diseases and conditions associated with a 5-HT2B receptor.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: August 28, 2012
    Assignee: Raqualia Pharma Inc.
    Inventors: Tatsuya Yamagishi, Kiyoshi Kawamura, Tadashi Inoue, Yuji Shishido, Hiroaki Ito
  • Publication number: 20120094964
    Abstract: The present invention relates to sulfamoyl benzoic acid derivatives of formula (I) or a pharmaceutically acceptable salt thereof, processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of various disorders which are mediated via the TRPM8 receptor.
    Type: Application
    Filed: May 6, 2010
    Publication date: April 19, 2012
    Inventors: Tadashi Inoue, Masashi Ohmi, Kiyoshi Kawamura, Kazuo Ando, Yuji Shishido