Patents by Inventor Takayuki Nagatsuka

Takayuki Nagatsuka 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).

  • Patent number: 8044068
    Abstract: Disclosed is an aminopyrrolidine compound represented by the formula [I] or a pharmaceutically acceptable salt thereof. The compound or the salt is useful as a prophylactic/therapeutic agent for mode disorder such as depression, anxiety disorder, anorexia, cachexia, pain and drug dependence, whose action relies on the MC4 receptor antagonistic effect.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: October 25, 2011
    Assignees: Taisho Pharmaceutical Co., Ltd, Nissan Chemical Industries, Ltd.
    Inventors: Taketoshi Okubo, Toshihito Kumagai, Takaaki Ishii, Toshio Nakamura, Kumi Abe, Yuri Amada, Tomoko Ishizaka, Xiang-Min Sun, Yoshinori Sekiguchi, Shigetada Sasako, Takanori Shimizu, Takayuki Nagatsuka
  • Patent number: 7781483
    Abstract: This invention relates to benzopyran compounds of formula (I) wherein X is NR6, Y is a bond, SO or SO2, Z is C1-4alkyl group or phenyl group, W is hydrogen atom, hydroxy group, C1-6 alkoxy group, a halogen atom, C1-4alkyl group or C1-6alkylsulfonylamino group, R1 and R2 are independently of each other C1-3alkyl group, R3 is hydrogen atom, hydroxy group or methoxy group, m is an integer of 0 to 4, n is an integer of 0 to 4, V is a single bond, CR7R8, NR9, O, S, SO or SO2, R4 is hydrogen atom or C1-6alkyl group, R5 is hydrogen atom, C1-6alkyl group, C3-8cycloalkyl group, C3-8cycloalkenyl group, C6-14aryl group or C2-9heteroaryl group. These compounds are useful as an anti-arrhythmic agent.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: August 24, 2010
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Toru Tsukagoshi, Takayuki Nagatsuka, Tomoyuki Matsuda, Norio Hashimoto
  • Patent number: 7689475
    Abstract: A manufacturer and retailer, which supply and sell articles such as business expendables or the like, stock articles in considerable quantities in their warehouses. However, such stocks are not always appropriate due to diversity of articles and difficulty in demand prediction, and articles cannot be delivered in a short term. A main server controls stock reserve of a branch warehouse on the basis of the check result of the urgency level of received order information, which is received from a user's information processing apparatus via a communication line, and the comparison result between the order quantity indicated by the received order information, and a non-reserved stock quantity.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: March 30, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Rikio Shiba, Takayuki Nagatsuka, Yukihiko Shimizu
  • Publication number: 20090291940
    Abstract: Disclosed is an aminopyrrolidine compound represented by the formula [I] or a pharmaceutically acceptable salt thereof. The compound or the salt is useful as a prophylactic/therapeutic agent for mode disorder such as depression, anxiety disorder, anorexia, cachexia, pain and drug dependence, whose action relies on the MC4 receptor antagonistic effect.
    Type: Application
    Filed: March 30, 2007
    Publication date: November 26, 2009
    Applicants: Taisho Pharmaceutical Co., Ltd., Nissan Chemical Industries, Ltd.
    Inventors: Taketoshi Okubo, Toshihito Kumagai, Takaaki Ishii, Toshio Nakamura, Kumi Abe, Yuri Amada, Tomoko Ishizaka, Xiang-Min Sun, Yoshinori Sekiguchi, Shigetada Sasako, Takanori Shimizu, Takayuki Nagatsuka
  • Patent number: 7386603
    Abstract: Contents are distributed on the basis of information of a hobby and an address of the user and the like. The distribution of the contents is controlled also on the basis of a result of comparison of a reception intensity regarding contents of 3 or more levels set on the user side and a distribution intensity set as attributes into the contents on a distributing side.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: June 10, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Rikio Shiba, Katsuhiko Tanaka, Takayuki Nagatsuka, Yukihiko Shimizu
  • Publication number: 20070299130
    Abstract: This invention relates to benzopyran compounds of formula (I) wherein X is NR6, Y is a bond, SO or SO2, Z is C1-4alkyl group or phenyl group, W is hydrogen atom, hydroxy group, C1-6 alkoxy group, a halogen atom, C1-4alkyl group or C1-6alkylsulfonylamino group, R1 and R2 are independently of each other C1-3alkyl group, R3 is hydrogen atom, hydroxy group or methoxy group, m is an integer of 0 to 4, n is an integer of 0 to 4, V is a single bond, CR7R8, NR9, O, S, SO or SO2, R4 is hydrogen atom or C1-6alkyl group, R5 is hydrogen atom, C1-6alkyl group, C3-8cycloalkyl group, C3-8cycloalkenyl group, C6-14aryl group or C2-9heteroaryl group. These compounds are useful as an anti-arrhythmic agent.
    Type: Application
    Filed: February 25, 2005
    Publication date: December 27, 2007
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Toru Tsukagoshi, Takayuki Nagatsuka, Tomoyuki Matsuda, Norio Hashimoto
  • Publication number: 20030018775
    Abstract: Contents are distributed on the basis of information of a hobby and an address of the user and the like. The distribution of the contents is controlled also on the basis of a result of comparison of a reception intensity regarding contents of 3 or more levels set on the user side and a distribution intensity set as attributes into the contents on a distributing side.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 23, 2003
    Inventors: Rikio Shiba, Katsuhiko Tanaka, Takayuki Nagatsuka, Yukihiko Shimizu
  • Publication number: 20020147667
    Abstract: A manufacturer and retailer, which supply and sell articles such as business expendables or the like, stock articles in considerable quantities in their warehouses. However, such stocks are not always appropriate due to diversity of articles and difficulty in demand prediction, and articles cannot be delivered in a short term. A main server controls stock reserve of a branch warehouse on the basis of the check result of the urgency level of received order information, which is received from a user's information processing apparatus via a communication line, and the comparison result between the order quantity indicated by the received order information, and a non-reserved stock quantity.
    Type: Application
    Filed: April 2, 2002
    Publication date: October 10, 2002
    Inventors: Rikio Shiba, Takayuki Nagatsuka, Yukihiko Shimizu
  • Publication number: 20020055883
    Abstract: Collection methods of toner cartridges involve stores or manufactures dispatching recovery vehicles, users taking toner cartridges to stores, or users sending toner cartridges by packing them in special boxes, but all these methods are troublesome and costly. To deal with this situation, an ordering screen provided to the user who orders goods via an Internet contains an entry field for specifying whether to use a collection service for the goods to be ordered. When this field is filled in and the information as to whether to use the collection service is transmitted, a main server calculates expected collection quantities based on the transmitted information and then draws up collection plans based on the calculated information.
    Type: Application
    Filed: October 15, 2001
    Publication date: May 9, 2002
    Inventors: Rikio Shiba, Takayuki Nagatsuka, Yukihiko Shimizu
  • Publication number: 20020010611
    Abstract: On designated dates from customers for sales of articles, a collecting request of used items for recycling, or the like through the Internet, and a service is added and the designated dates from the customers are concentrated on a specific date, thereby enabling trucks for delivery or collection for recycling to be efficiently used.
    Type: Application
    Filed: May 30, 2001
    Publication date: January 24, 2002
    Inventors: Yoshihisa Yamaji, Takayuki Nagatsuka, Yukihiko Shimizu, Rikio Shiba
  • Patent number: 5972554
    Abstract: A toner for developing electrostatic images is formed of toner particles comprising a binder resin and a colorant, and inorganic fine powder. The toner further contains: a phenol-aldehyde condensate mixture comprising an acyclic condensate and a cyclic condensate, respectively, of a phenol compound with an aldehyde compound, and the phenol-aldehyde condensate mixture contains 10-80 mol % of condensate components having 4-6 phenolic units. The phenol-aldehyde condensate mixture may be contained in or externally added to the toner particles. Because of the inclusion of an acyclic condensate and appropriate amount of condensate components having 4-6 phenolic units, the phenol-aldehyde condensate mixture may exhibit a good dispersibility in the binder resin and a good charge control performance.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: October 26, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Nagatsuka, Hirohide Tanikawa, Makoto Unno
  • Patent number: 5582902
    Abstract: A laminate film suitable for providing a transparency for an OHP (overhead projector) is formed by disposing an absorbing layer on a substrate. The absorbing layer functions to allow addition of a wax component to a toner so as to improve the color mixing characteristic and anti-offset characteristic of the toner without causing a wax exudation trace which is liable to occur in a fixed toner image if the absorbing layer is not provided.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: December 10, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kanbayashi, Takeshi Menjo, Takayuki Nagatsuka, Takashige Kasuya, Tatsuya Nakamura, Tatsuhiko Chiba, Kohji Inaba
  • Patent number: 5558967
    Abstract: A toner and a two-component developer for developing electrostatic images are disclosed. The toner comprises toner particles and the two-component developer comprises the toner and a carrier. The toner particle has a two-layer structure of a core layer and a surface layer, produced by suspension polymerization. The core layer and surface layer are mainly comprised of a resin having a low softening point and a resin having a high softening point, respectively. In the surface layer, a polyester resin having a specific acid value and a specific molecular weight is included to impart an appropriate water absorption to the toner. Due to the appropriate water absorption and superior fluidity, the toner can achieve a speedy rise of charge to give electrostatic charges in a stable quantity over a long period of time, and it can give a high image density and images with superior fine-line reproduction and highlight reproduction.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: September 24, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Nagatsuka, Takashige Kasuya, Tatsuya Nakamura, Makoto Kanbayashi, Tatsuhiko Chiba
  • Patent number: 5508139
    Abstract: A magnetic toner for developing an electrostatic image is disclosed which has a binder resin, a magnetic material and an iron compound of the formula (I). The magnetic toner has a saturation magnetization of 20 to 50 Am.sup.2 /kg and a coercive force of 40 to 200 oersted.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: April 16, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiko Tanaka, Takayuki Nagatsuka, Rika Doi
  • Patent number: 5500321
    Abstract: A color toner for developing electrostatic images is formed of color toner particles each including a binder resin, a polyalkylene, and a colorant. The color toner particles are formed by suspension polymerization. The polyalkylene is characterized by having a crystallinity of 10-50% and a melting enthalpy (as measured by a differential scanning calorimeter) of at most 35 cal/g. The color toner is characterized by an improved fixability without causing offset especially at a relatively low temperature and suitable for providing a transparency film for an overhead projection.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: March 19, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashige Kasuya, Takayuki Nagatsuka, Tatsuya Nakamura, Makoto Kanbayashi, Tatsuhiko Chiba
  • Patent number: 5476745
    Abstract: The present invention provides a process for producing a toner having little remaining polymerizable monomer in it by suspension polymerization. During the latter half of the polymerization reaction, the remaining polymerizable monomers and the aqueous medium are evaporated or removed while supplying the aqueous medium, saturated vapor of the aqueous medium, saturated vapor of a water-soluble solvent, or water-soluble gas to maintain the ratio of solid-liquid constant.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: December 19, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Nakamura, Ichiro Ohsaki, Takayuki Nagatsuka, Makoto Kanbayashi, Tatsuhiko Chiba
  • Patent number: 5407776
    Abstract: A toner for developing an electrostatic image has toner particles.The toner particles are prepared by suspension polymerization and contain at least two components comprised of a high softening point resin-A and a low softening point material-B.The toner particles each have a structure separated into a phase-A mainly composed of the resin-A and a phase-B mainly composed of the material-B. The phase-B is absent in the vicinity of the toner particle surface, ranging from its surface to a depth 0.15 time a toner particle diameter.The toner particles contain an organic solvent, a polymerizable monomer or a mixture thereof in a quantity of not more than 1,000 ppm.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: April 18, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kanbayashi, Takayuki Nagatsuka, Takashige Kasuya, Tatsuya Nakamura, Tatsuhiko Chiba
  • Patent number: 5391450
    Abstract: A novel method for heat-pressure fixing color toner images in which:(1) a toner produced by suspension polymerization and containing a wax of a certain molecular weight and a certain melting point in a certain amount, wherein the wax is enclosed in each particle by a vinyl resin, and THF soluble matters having specific molecular weight distribution and is used in conjunction with(2) a fixing means comprising a fixing roller and a pressure roller in mutual pressure contact, through which the transfer medium comes out in the direction inclined toward the pressure roller, and wherein the surface of the fixing roller comprises a fluorine-containing material.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: February 21, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Nagatsuka, Tatsuya Nakamura, Hiromi Mori, Takaaki Kohtaki
  • Patent number: 5354639
    Abstract: A color toner for developing electrostatic images is formed of color toner particles each including a binder resin, a polyalkylene, and a colorant. The color toner particles are formed by suspension polymerization. The polyalkylene is characterized by having a crystallinity of 10-50% and a melting enthalpy (as measured by a differential scanning calorimeter) of at most 35 cal/g. The color toner is characterized by an improved fixability without causing offset especially at a relatively low temperature and suitable for providing a transparency film for an overhead projection.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: October 11, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashige Kasuya, Takayuki Nagatsuka, Tatsuya Nakamura, Makoto Kanbayashi, Tatsuhiko Chiba
  • Patent number: 5354640
    Abstract: A toner for developing an electrostatic image has toner particles. The toner particles are prepared by suspension polymerization and contain at least two components comprised of a high softening point resin-A and a low softening point material-B. The toner particles each have a structure separated into a phase-A mainly composed of the resin-A and a phase-B mainly composed of the material-B. The phase-B is absent in the vicinity of the toner particle surface, ranging from its surface to a depth 0.15 time a toner particle diameter. The toner particles contain an organic solvent, a polymerizable monomer or a mixture thereof in a quantity of not more than 1,000 ppm.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: October 11, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kanbayashi, Takayuki Nagatsuka, Takashige Kasuya, Tatsuya Nakamura, Tatsuhiko Chiba