Patents by Inventor Kazumasa Yamada

Kazumasa Yamada 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: 10544425
    Abstract: By a QTL analysis and so forth using 4-HPPD inhibitor-susceptible rice and 4-HPPD inhibitor-resistant rice, a hypothetical gene (HIS1 gene) of an iron/ascorbate-dependent oxidoreductase gene located on a short arm of chromosome 2 of rice has been identified as a 4-HPPD inhibitor-resistance gene. Further, it has also been revealed that a homologous gene (HSL1 gene) of the HIS1 gene is located on chromosome 6 of rice. Furthermore, it has been found out that utilizations of these genes make it possible to efficiently produce a plant having increased resistance or susceptibility to a 4-HPPD inhibitor and to efficiently determine whether a plant has resistance or susceptibility to a 4-HPPD inhibitor.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: January 28, 2020
    Assignees: Incorporated Administrative Agency National Agriculture Agriculture and Food Research Organization, TOYAMA PREFECTURE, SDS BIOTECH K.K.
    Inventors: Hiroshi Kato, Hideo Maeda, Yoshihiro Sunohara, Ikuo Ando, Masahiro Oshima, Motoshige Kawata, Hitoshi Yoshida, Sakiko Hirose, Makiko Kawagishi, Yojiro Taniguchi, Kazumasa Murata, Hiroaki Maeda, Yuji Yamada, Keisuke Sekino, Akihiko Yamazaki
  • Patent number: 10290875
    Abstract: An electrode material for a secondary cell includes a porous carbon material having an absolute value of a differential value of a mass using a temperature as a parameter exceeding 0 at 360° C. and being 0.016 or more at 290° C. provided by thermally analyzing a mixture of the porous carbon material and S8 sulfur at a mass ratio of 1:2.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: May 14, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shun Yamanoi, Seiichiro Tabata, Hironori Iida, Kenji Kishimoto, Yosuke Saito, Shinichiro Yamada, Kazumasa Takeshi, Koichiro Hinokuma
  • Publication number: 20170105935
    Abstract: Provided is a pharmaceutical composition excellent in capability of an accelerated penetration into an affected area. The pharmaceutical composition capable of accelerated penetration into the affected area is formed by dispersing nano-bubbles, which are negatively charged and are given high internal pressures due to their surface tension, in the pharmaceutical composition in a form of a liquid or a gel including a predetermined drug.
    Type: Application
    Filed: December 2, 2016
    Publication date: April 20, 2017
    Applicants: NAKASHIMA KOGYO CORPORATION, NATIONAL CENTER FOR GERIATRICS AND GERONTOLOGY
    Inventors: Yoji NAKASHIMA, Misako NAKASHIMA, Koichiro IOHARA, Kazumasa YAMADA
  • Publication number: 20140178992
    Abstract: A membrane separation culture device includes an upper structure including a vessel in which at least a portion of the bottom thereof is formed with a separation membrane having pores that allow stem cells to permeate therethrough, and a lower structure including a vessel that retains a fluid in which the membrane of the upper structure is immersed.
    Type: Application
    Filed: March 30, 2012
    Publication date: June 26, 2014
    Applicant: National Center for Geriatrics and Gerontology
    Inventors: Misako Nakashima, Koichiro Iohara, Kazumasa Yamada, Masaaki Shimagaki, Masahiro Osabe
  • Patent number: 6644940
    Abstract: A restarting device of a pump including a center rod defining fluid delivering chambers and driving chambers 11b and 12b. The restarting device of the pump further includes: a change-over valve 2 for switching a direction for the center rod to move, and a restarting hydraulic circuit 3 which, when a supply of the driving fluid from the change-over valve 2 to the driving chambers 11b and 12b in both sides is stopped, detects the supply of the driving fluid into the driving chambers 11b and 12b in both sides having been stopped and then causes the driving fluid to flow into the change-over valve, thereby restarting the supply of the driving fluid into the driving chambers 11b and 12b.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: November 11, 2003
    Assignee: Yamada Corporation
    Inventor: Kazumasa Yamada
  • Publication number: 20020076340
    Abstract: An object of the present invention is to provide a restarting device of a pump for restarting an operation of the pump automatically in such an event that the operation of the pump is shut down due to a change-over valve stopping in an intermediate position, which valve has been moved forth and back to switch a direction for a center rod of the pump to move.
    Type: Application
    Filed: December 5, 2001
    Publication date: June 20, 2002
    Inventor: Kazumasa Yamada
  • Patent number: 6126403
    Abstract: A diaphragm pump is provided with a diaphragm defining a pump chamber and a drive chamber in the pump housing, a driving fluid is supplied to the drive chamber and a pump fluid is expelled from the pump chamber. The diaphragm pump is provided with pressure control means which, when the pressure in the pump chamber surpasses the pressure in the drive chamber neighboring the pump chamber across the diaphragm, controls the pressure of the driving fluid based upon output signals from pressure sensors in such a manner that the pressure in the fluid chamber will become higher than the pressure in the neighboring drive chamber. This makes it possible to prevent a diaphragm reversal phenomenon, wherein a diaphragm that should expand toward the pump chamber contracts toward the drive chamber instead during reciprocation of the diaphragm.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: October 3, 2000
    Assignee: Yamada T.S. Co., Ltd.
    Inventor: Kazumasa Yamada
  • Patent number: 5758565
    Abstract: A diaphragm assembly has a center disk in which use of a metal member is not required. The center disk comprises first and second center disk members, made of resin, embracing a resin diaphragm between them. The first center disk member has an inwardly directed inner flange on an inner peripheral wall defining a resin charging space, and the second center disk member comprises a resin-molded body, formed by charging a resin, and has an outwardly directed outer flange. A portion of the diaphragm is clamped between the inner flange and the outer flange.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: June 2, 1998
    Assignee: Yamada T.S. Co., Ltd.
    Inventor: Kazumasa Yamada
  • Patent number: 5743169
    Abstract: A diaphragm assembly has a center disk in which use of a metal member is not required. The center disk comprises first and second center disk members, made of resin, embracing a resin diaphragm between them. The first center disk member has an inwardly directed inner flange on an inner peripheral wall defining a resin charging space, and the second center disk member comprises a resin-molded body, formed by charging a resin, and has an outwardly directed outer flange. A portion of the diaphragm is clamped between the inner flange and the outer flange.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: April 28, 1998
    Assignee: Yamada T.S. Co., Ltd.
    Inventor: Kazumasa Yamada
  • Patent number: 5120202
    Abstract: The objective of the present invention is to provide a reciprocation switching device for a pump which will solve problems of conventional devices such as that, because coil springs are used for activating by their snap action valve operators or switching operators serving to control the pressure of pump working fluid in relation to reciprocating action of the pump, such devices require the numerous number of parts including spring fitting shafts, the structure to attach such fitting shafts, parts for spring holders, etc.; and that the assembling of those parts is troublesome. A device according to the present invention uses one or two wire springs made into a C-like shape as the springs for the aforementioned purpose and calls for fitting said springs directly between the spring fitting section(s) and the valve operator or the switching operator.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: June 9, 1992
    Assignee: Yamada Yuki Seizo Co., Ltd.
    Inventors: Minoru Murata, Kazumasa Yamada
  • Patent number: 5002468
    Abstract: The objective of the present invention is to provide a reciprocation switching device for a pump which will solve problems of conventional devices such as that, because coil springs are used for activating by their snap action valve operators or switching operators serving to control the pressure of pump working fluid in relation to reciprocating action of the pump, such devices require the numerous number of parts including spring fitting shafts, the structure to attach such fitting shafts, parts for spring holders, etc.; and that the assembling of those parts is troublesome. A device according to the present invention uses one or two wire springs made into a C-like shape as the springs for the aforementioned purpose and calls for fitting said springs directly between the spring fitting sections(s) and the valve operator or the switching operator.
    Type: Grant
    Filed: January 25, 1989
    Date of Patent: March 26, 1991
    Assignee: Yamada Yuki Seizo Co., Ltd.
    Inventors: Minoru Murata, Kazumasa Yamada
  • Patent number: 5002469
    Abstract: The objective of the present invention is to provide a reciprocation switching device for a pump which will solve problems of conventional devices such as that, because coil springs are used for activating by their snap action valve operators or switching operators serving to control the pressure of pump working fluid in relation to reciprocating action of the pump, such devices require the numerous number of parts including spring fitting shafts, the structure to attach such fitting shafts, parts for spring holders, etc.; and that the assembling of those parts is troublesome. A device according to the present invention uses one or two springs made into a C-like shape as the springs for the aforementioned purpose and calls for fitting said springs directly between the spring fitting section(s) and the valve operator or the switching operator.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: March 26, 1991
    Assignee: Yamada Yuki Seizo Co., Ltd.
    Inventors: Minoru Murata, Kazumasa Yamada
  • Patent number: 4923168
    Abstract: A spool type switching valve to be used for the switching operation of a diaphragm pump or a similar device, which simultaneously insures both preventing abrasion of the detent mechanism and obtaining thorough operation of switching the spool. A spool is movably fitted inside a sleeve and is prevented from standing still at a neutral point by a detent mechanism provided at one of its ends. The detent mechanism comprises a spool operator fitted around a shaft section at one end of the spool as one body, a spring holder at the end of the sleeve retains a pair of C-shaped wire springs of a circular cross-section fitted between the spool operator and the spring holder. As the spool passes the neutral point, spring forces snap the spool to the extremity of its range, thereby preventing stopping of the spool in the neutral position. An axial clearance permits the spool operator to begin moving before the spool moves.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: May 8, 1990
    Assignee: 501 Yamada Yuki Seizo Co., Ltd.
    Inventors: Minoru Murata, Kazumasa Yamada
  • Patent number: 4817503
    Abstract: A pressure chamber of a diaphragm pump having an outer chamber improved so that it is free from stress concentration. The inner wall surface of the pressure chamber is recessed in a mero-spherical shape. In order to support this chamber wall from its rear side, an outer ring rib is provided along the outermost periphery of the outer surface of the chamber, and an inner ring rib is circumferentially disposed at the inner side of the outer ring rib. Further, radial ribs are provided so as to connect together the outer and inner ring ribs in the radial direction.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: April 4, 1989
    Assignee: Yamada Yuki Seizo Co., Ltd.
    Inventor: Kazumasa Yamada