Patents by Inventor Tomoyuki Kawamura

Tomoyuki 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: 20210155569
    Abstract: Provided is a method for producing at least one of an unsaturated aldehyde and an unsaturated carboxylic acid from an alkene by an oxidation reaction, in which a n-layered catalyst layer (n?2) is provided in a gas flow direction in a reaction tube, two or more kinds of catalysts having different activities are used; and the catalysts are packed in such a manner that dT?20° C. is satisfied, when a difference between a temperature PTn of an exothermic peak in a n-th layer as counted from a gas inlet and a minimum value mTn-1 of a temperature of a catalyst layer which appears between an exothermic peak in a (n?1)th layer and an exothermic peak in a n-th layer from the gas inlet is represented as dT (=PTn?mTn-1), and the change rate of dT is 2.5 or less at a reaction bath temperature within a range of ±6° C. of a reaction bath temperature at which the highest yield is obtained.
    Type: Application
    Filed: April 10, 2019
    Publication date: May 27, 2021
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Ryota HIRAOKA, Shogo YASUDA, Tomoyuki KAWAMURA, Takanori NAKANO
  • Patent number: 10851040
    Abstract: A method for producing at least one oxidation product selected from the group consisting of acrolein and acrylic acid is provided. This method can alleviate concerns about deterioration of a gas-phase oxidation catalyst and reaction runaway in a restart period after a shutdown, and can allow the reaction to proceed in a stable state. Using a fixed-bed reactor filled with a gas-phase oxidation catalyst, at least one source gas selected from the group consisting of propylene and acrolein is subjected to a gas-phase contact oxidation reaction while a heating medium is caused to contact with or circulate through the fixed-bed reactor and thereby to heat the fixed-bed reactor. The temperature of the heating medium when the load is maximum in the restart period after the shutdown is controlled to be lower than the temperature of the heating medium when the load is maximum in an initial start-up period.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: December 1, 2020
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki Kawamura, Tomoaki Kobayashi, Tatsuhiko Kurakami, Hideo Yoshida
  • Publication number: 20200048175
    Abstract: A method for producing at least one oxidation product selected from the group consisting of acrolein and acrylic acid is provided. This method can alleviate concerns about deterioration of a gas-phase oxidation catalyst and reaction runaway in a restart period after a shutdown, and can allow the reaction to proceed in a stable state. Using a fixed-bed reactor filled with a gas-phase oxidation catalyst, at least one source gas selected from the group consisting of propylene and acrolein is subjected to a gas-phase contact oxidation reaction while a heating medium is caused to contact with or circulate through the fixed-bed reactor and thereby to heat the fixed-bed reactor. The temperature of the heating medium when the load is maximum in the restart period after the shutdown is controlled to be lower than the temperature of the heating medium when the load is maximum in an initial start-up period.
    Type: Application
    Filed: March 29, 2017
    Publication date: February 13, 2020
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki KAWAMURA, Tomoaki KOBAYASHI, Tatsuhiko KURAKAMI, Hideo YOSHIDA
  • Patent number: 10300463
    Abstract: Provided is a catalyst for manufacturing an unsaturated aldehyde and/or an unsaturated carboxylic acid, which is prepared by a method in which a molybdenum component raw material is composed of only an ammonium molybdate, the weight of water for dissolution is 8.5 times or less relative to the weight of molybdenum contained in the ammonium molybdate; and a bismuth component raw material is composed of only bismuth nitrate, the weight of a nitric acid aqueous solution for dissolution is 2.3 times or more relative to the weight of bismuth contained in the bismuth nitrate, and a nitric acid concentration in the nitric acid aqueous solution for dissolving the bismuth nitrate is 10% by weight or more.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: May 28, 2019
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki Kawamura, Motohiko Sugiyama, Ryota Hiraoka
  • Publication number: 20180186712
    Abstract: Provided is a method for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid, which enables one to achieve an operation stably over a long period of time while improving an effective yield, even in a high-load reaction, and in the method for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid, multilayer filling of stacking two or more catalyst layers each containing a complex metal oxide catalyst in the axial direction of the tube under specified conditions is performed, and the catalyst layer on the most gas outlet side in the tube axis contains a catalyst containing a compound represented by a specified formulation formula.
    Type: Application
    Filed: May 12, 2016
    Publication date: July 5, 2018
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Motohiko SUGIYAMA, Ryota HIRAOKA, Tomoyuki KAWAMURA, Shogo YASUDA
  • Publication number: 20180029018
    Abstract: Provided is a catalyst for manufacturing an unsaturated aldehyde and/or an unsaturated carboxylic acid, which is prepared by a method in which a molybdenum component raw material is composed of only an ammonium molybdate, the weight of water for dissolution is 8.5 times or less relative to the weight of molybdenum contained in the ammonium molybdate; and a bismuth component raw material is composed of only bismuth nitrate, the weight of a nitric acid aqueous solution for dissolution is 2.3 times or more relative to the weight of bismuth contained in the bismuth nitrate, and a nitric acid concentration in the nitric acid aqueous solution for dissolving the bismuth nitrate is 10% by weight or more.
    Type: Application
    Filed: February 25, 2016
    Publication date: February 1, 2018
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki KAWAMURA, Motohiko SUGIYAMA, Ryota HIRAOKA
  • Patent number: 9580376
    Abstract: Provided is a method of subjecting an alkene to partial oxidation by using a fixed bed multitubular reactor, thereby producing an unsaturated aldehyde and/or an unsaturated carboxylic acid each corresponding to the alkene, wherein a plurality of catalyst layers formed by N division (N is N?2) with respect to a gas flow direction of a reaction tube are provided, and when a change (° C.) of hot spot temperature per 1° C. change of reaction bath temperature in the catalyst layer is designated as Sn, at least one of the plurality of catalyst layers is regulated to Sn?6.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: February 28, 2017
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tomoyuki Kawamura, Tatsuhiko Kurakami, Yuuta Nakazawa, Toru Kawaguchi, Motohiko Sugiyama
  • Publication number: 20170002488
    Abstract: Provided is a noise-absorbing sheet that is highly effective at absorbing noise from magnetic and/or electric fields, the noise-absorbing effect being effective in wider bandwidths. A noise-absorbing sheet upon which at least two layers are stacked, wherein the noise absorbing sheet is characterized in that a magnetic layer containing a magnetic material and a layer of a noise-absorbing fabric in which a metal is deposited on constituent fibers are layered on said sheet, and the common logarithmic value of the surface resistivity of at least one side of the noise-absorbing fabric is 0 to 6.
    Type: Application
    Filed: November 21, 2014
    Publication date: January 5, 2017
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Tomoya TANAKA, Chie OKAMURA, Shinichi OKAJIMA, Tomoyuki KAWAMURA, Kazufumi KATO
  • Publication number: 20160145180
    Abstract: Provided is a method of subjecting an alkene to partial oxidation by using a fixed bed multitubular reactor, thereby producing an unsaturated aldehyde and/or an unsaturated carboxylic acid each corresponding to the alkene, wherein a plurality of catalyst layers formed by N division (N is N?2) with respect to a gas flow direction of a reaction tube are provided, and when a change (° C.) of hot spot temperature per 1° C. change of reaction bath temperature in the catalyst layer is designated as Sn, at least one of the plurality of catalyst layers is regulated to Sn?6.
    Type: Application
    Filed: July 17, 2014
    Publication date: May 26, 2016
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki KAWAMURA, Tatsuhiko KURAKAMI, Yuuta NAKAZAWA, Toru KAWAGUCHI, Motohiko SUGIYAMA
  • Patent number: 8487126
    Abstract: The objective of the present invention is to provide a process for simple and efficient preparation of an intermediate compound to synthesize a gadolinium complex having a substituent for improving a retention property in blood time and specificity to an intended organ. The objective of the present invention is also to provide an intermediate compound produced by the said production process. The process for preparation of the diethylenetriaminepentaacetic acid derivative (I): wherein R1 to R5 are independently C1-6 alkyl groups; comprising the steps of: reacting a diethylenetriaminepentaacetic acid pentaester with a halogenated ally compound in an aprotic solvent; removing the excess halogenated ally compound (III); and reacting a reaction product of the diethylenetriaminepentaacetic acid pentaester and the halogenated ally compound with a base in a solvent.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: July 16, 2013
    Assignee: The University of Tokushima
    Inventors: Hisao Nemoto, Tomoyuki Kawamura, Kenji Yatsuzuka, Masaki Kamiya
  • Publication number: 20120203027
    Abstract: The objective of the present invention is to provide a process for simple and efficient preparation of an intermediate compound to synthesize a gadolinium complex having a substituent for improving a retention property in blood time and specificity to an intended organ. The objective of the present invention is also to provide an intermediate compound produced by the said production process. The process for preparation of the diethylenetriaminepentaacetic acid derivative (I): wherein R1 to R5 are independently C1-6 alkyl groups; comprising the steps of: reacting a diethylenetriaminepentaacetic acid pentaester with a halogenated ally compound in an aprotic solvent; removing the excess halogenated ally compound (III); and reacting a reaction product of the diethylenetriaminepentaacetic acid pentaester and the halogenated ally compound with a base in a solvent.
    Type: Application
    Filed: September 22, 2010
    Publication date: August 9, 2012
    Applicant: THE UNIVERSITY OF TOKUSHIMA
    Inventors: Hisao Nemoto, Tomoyuki Kawamura, Kenji Yatsuzuka, Masaki Kamiya
  • Patent number: 7952597
    Abstract: There is provided an image display device which can control image retention-preventing means in a static image displaying part, according to a change with the passage of time in a luminance difference. The drive of the image retention-preventing means is cancelled when accumulated elapsed-time during which the luminance difference is returned to approximately an original value elapses.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: May 31, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Hidenao Kubota, Tomoyuki Kawamura
  • Publication number: 20100004852
    Abstract: A navigation device searches for a facility that matches a category input by a user and displays an icon for indicating the searched facility. The navigation device includes a usage determination unit and a display control unit. The usage determination unit determines whether a host vehicle has used the searched facility based on map information and a host vehicle status. If it is determined by the usage determination unit that the host vehicle has used the searched facility, the display control unit executes a control to change a display status of an icon for indicating the facility that was determined as used, and a display status of an icon for indicating another facility in the same category as the facility that was determined as used.
    Type: Application
    Filed: May 8, 2009
    Publication date: January 7, 2010
    Applicant: AISIN AW CO., LTD.
    Inventor: Tomoyuki KAWAMURA
  • Patent number: 7550678
    Abstract: In a plasma display module, a flexible substrate is strengthened and a mounting structure for alleviating stresses is provided, thereby preventing the metal fatigue of wirings. In a PDP (Plasma Display Panel) module, a metal plate and a flexible substrate constituting a driver module are provided. On the flexible substrate, wirings not connected to electrodes of the panel (independent linear patterns) are disposed on an outer side of wirings and near an edge portion of the metal plate to which the flexible substrate is attached.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: June 23, 2009
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Tomoyuki Kawamura, Taizo Ohno, Yoshinori Okada, Takashi Sasaki, Hideki Isohata, Kenji Ishiwata
  • Publication number: 20060238691
    Abstract: In a plasma display module, a flexible substrate is strengthened and a mounting structure for alleviating stresses is provided, thereby preventing the metal fatigue of wirings. In a PDP (Plasma Display Panel) module, a metal plate and a flexible substrate constituting a driver module are provided. On the flexible substrate, wirings not connected to electrodes of the panel (independent linear patterns) are disposed on an outer side of wirings and near an edge portion of the metal plate to which the flexible substrate is attached.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 26, 2006
    Inventors: Tomoyuki Kawamura, Taizo Ohno, Yoshinori Okada, Takashi Sasaki, Hideki Isohata, Kenji Ishiwata
  • Publication number: 20060125849
    Abstract: There is provided an image display device which can control image retention-preventing means in a static image displaying part, according to a change with the passage of time in a luminance difference. The drive of the image retention-preventing means is cancelled when accumulated elapsed-time during which the luminance difference is returned to approximately an original value elapses.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 15, 2006
    Inventors: Hidenao Kubota, Tomoyuki Kawamura
  • Publication number: 20050253825
    Abstract: A video display apparatus includes a brightness modulating circuit that reduces the image brightness of the peripheral area of a display panel as compared to that of the central area of the display panel, and a control circuit that controls the operation of the brightness modulating circuit on the basis of the power consumption of the display panel in which the control circuit controls the brightness modulating circuit to be active when the power consumption of the display panel exceeds a predetermined threshold, and stops the operation of the brightness modulating circuit when it is smaller than the predetermined threshold.
    Type: Application
    Filed: October 14, 2004
    Publication date: November 17, 2005
    Inventors: Tomoyuki Kawamura, Shuichi Yano, Hidenao Kubota, Haruki Takata
  • Patent number: 5298525
    Abstract: This invention provides a method for preventing or treating type I diabetes in a mammal comprising administering the mammal an effective amount of at least one compound of the formula I: ##STR1## The invention also provides pharmaceutical preparations useful for the prevention and/or treatment of type I diabetes comprising an effective amount of at least one compound of the formula previously set forth and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: March 29, 1994
    Assignee: University Technologies International, Inc.
    Inventors: Ji-Won Yoon, Tomoyuki Kawamura
  • Patent number: D417880
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: December 21, 1999
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yuki Wani, Toshinobu Miyazawa, Tomoyuki Kawamura, Keiichi Iizuka, Minoru Inoue
  • Patent number: D420028
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: February 1, 2000
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yuki Wani, Toshinobu Miyazawa, Tomoyuki Kawamura, Keiichi Iizuka, Minoru Inoue