Patents by Inventor Masakazu Tamura

Masakazu Tamura 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: 10907724
    Abstract: A driving force transmission device includes: a gear; a case receiving the gear; a baffle plate positioned between a side surface of the gear and the case, the baffle plate including a downstream side end portion positioned at a most downstream position in a rotation direction of the gear, the case including a rib protruding toward the downstream side end portion, a clearance positioned between a surface of the rib and a surface of the baffle plate, the rib including a linear portion crossing a rotation direction of the gear.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: February 2, 2021
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Mitsuhiro Akiyama, Shogo Fujii, Tahei Toyoshima, Masakazu Tamura
  • Publication number: 20200347924
    Abstract: A continuously variable transmission includes a variator having a belt wound around a pair of pulleys, and a case forming a container chamber for the variator. The pulleys include fixed pulleys and movable pulleys. The belt includes elements stacked to be arranged in an annular form, and rings binding the element stacked. A circumference wall portion of the case is provided with a monitoring hole enabling flank faces of the elements to be monitored.
    Type: Application
    Filed: December 6, 2018
    Publication date: November 5, 2020
    Applicant: JATCO Ltd
    Inventors: Kazuyoshi KOBAYASHI, Masao ARIMATSU, Masayuki FURUYA, Kenichi YAMAMOTO, Shogo FUJII, Masakazu TAMURA, Kazuya NUMATA, Hirohisa YUKAWA
  • Publication number: 20200263782
    Abstract: A power transmission device includes: a gear; a case receiving the gear; and a baffle plate positioned between the gear and the case; the baffle plate including a guide portion arranged to guide an oil scooped up by the gear, into between the baffle plate and the case, and the guide portion being disposed above an oil level within the case, the guide portion being adjacent to an axial side surface of the gear, the guide portion being positioned in the baffle plate on an upstream side in a rotation direction of the gear, and the guide portion including a first bent portion which is positioned on a tip end side, and which is bent in a direction from the case toward the gear.
    Type: Application
    Filed: November 1, 2018
    Publication date: August 20, 2020
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Tahei TOYOSHIMA, Shingo YAMAMOTO, Kazuyuki HANDA, Masaki SHIBUYA, Tomohiro NAGATA, Masakazu TAMURA, Atsuyuki IDE, Yasuyuki HORIE, Hideyuki MAMIYA, Akira KAKIMI
  • Publication number: 20200263781
    Abstract: A driving force transmission device includes: a gear; a case receiving the gear; a baffle plate positioned between a side surface of the gear and the case, the baffle plate including a downstream side end portion positioned at a most downstream position in a rotation direction of the gear, the case including a rib protruding toward the downstream side end portion, a clearance positioned between a surface of the rib and a surface of the baffle plate, the rib including a linear portion crossing a rotation direction of the gear.
    Type: Application
    Filed: November 1, 2018
    Publication date: August 20, 2020
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Mitsuhiro AKIYAMA, Shogo FUJII, Tahei TOYOSHIMA, Masakazu TAMURA
  • Patent number: 10731159
    Abstract: The present invention provides a compound represented by the formula (Ia) as a novel cationic lipid that forms a lipid particle and also provides a lipid particle comprising the compound. The present invention further provides a nucleic acid lipid particle containing the lipid particle, and a pharmaceutical composition containing the nucleic acid lipid particle as an active ingredient.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: August 4, 2020
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Makoto Koizumi, Yoshiyuki Onishi, Takako Niwa, Masakazu Tamura, Yuji Kasuya
  • Publication number: 20200207837
    Abstract: The present invention provides a novel peptide which comprises an amino acid sequence represented by SEQ ID NO: 23, and specifically inhibits the protease activity of a target molecule.
    Type: Application
    Filed: September 6, 2018
    Publication date: July 2, 2020
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Daisuke Nishimiya, Masakazu Tamura
  • Publication number: 20200080086
    Abstract: The present invention provides a compound represented by the formula (Ia) as a novel cationic lipid that forms a lipid particle and also provides a lipid particle comprising the compound. The present invention further provides a nucleic acid lipid particle containing the lipid particle, and a pharmaceutical composition containing the nucleic acid lipid particle as an active ingredient.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 12, 2020
    Inventors: Makoto KOIZUMI, Yoshiyuki ONISHI, Takako NIWA, Masakazu TAMURA, Yuji KASUYA
  • Patent number: 10533176
    Abstract: The present invention provides a compound represented by the formula (Ia) as a novel cationic lipid that forms a lipid particle and also provides a lipid particle comprising the compound. The present invention further provides a nucleic acid lipid particle containing the lipid particle, and a pharmaceutical composition containing the nucleic acid lipid particle as an active ingredient.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: January 14, 2020
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Makoto Koizumi, Yoshiyuki Onishi, Takako Niwa, Masakazu Tamura, Yuji Kasuya
  • Publication number: 20180051285
    Abstract: The present invention provides a compound represented by the formula (Ia) as a novel cationic lipid that forms a lipid particle and also provides a lipid particle comprising the compound. The present invention further provides a nucleic acid lipid particle containing the lipid particle, and a pharmaceutical composition containing the nucleic acid lipid particle as an active ingredient.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 22, 2018
    Inventors: Makoto KOIZUMI, Yoshiyuki ONISHI, Takako NIWA, Masakazu TAMURA, Yuji KASUYA
  • Patent number: 9803199
    Abstract: The present invention provides a compound represented by the formula (Ia) as a novel cationic lipid that forms a lipid particle and also provides a lipid particle comprising the compound. The present invention further provides a nucleic acid lipid particle containing the lipid particle, and a pharmaceutical composition containing the nucleic acid lipid particle as an active ingredient.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: October 31, 2017
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Makoto Koizumi, Yoshiyuki Onishi, Takako Niwa, Masakazu Tamura, Yuji Kasuya
  • Patent number: 9599227
    Abstract: A lip seal includes: a lip part (1) forming a ring shape alone or with plural members and provided in sliding contact with the entire periphery of a surface of a shaft (0); an elastic arm part (2) and a flexible wall (3) supporting the lip part (1) at a sliding contact position; key parts (4) connecting the elastic arm part (2) and the flexible wall (3) to a housing (10), respectively, and a pressure regulation chamber (A) forming a ring shape alone or with plural members and using the elastic arm part (2) and the flexible wall (3) as partition walls. The flexible wall (3) is deformed by the increase and decrease in pressure in the pressure regulation chamber (A) to change the lip part (1) at least radially.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: March 21, 2017
    Assignee: WARTSILA JAPAN LTD.
    Inventors: Nobuhiro Himeno, Mashiba Kyogoku, Masakazu Tamura
  • Publication number: 20160257951
    Abstract: The present invention provides a compound represented by the formula (Ia) as a novel cationic lipid that forms a lipid particle and also provides a lipid particle comprising the compound. The present invention further provides a nucleic acid lipid particle containing the lipid particle, and a pharmaceutical composition containing the nucleic acid lipid particle as an active ingredient.
    Type: Application
    Filed: July 7, 2014
    Publication date: September 8, 2016
    Inventors: Makoto KOIZUMI, Yoshiyuki ONISHI, Takako NIWA, Masakazu TAMURA, Yuji KASUYA
  • Patent number: 9200309
    Abstract: To provide a method for screening using cultured cells, intended to find a compound which increases the amount of sphingosine-1-phosphate or dihydrosphingosine-1-phosphate by SPL inhibitory activity rapidly, simply and highly sensitively. Provided are: a rapid and simple measurement method employing a scintillation proximity assay (SPA); a method with greatly improved detection sensitivity to the activity of a compound by controlling the concentration of the vitamin B6 group in a culture medium to be used in assaying; and others.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: December 1, 2015
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Mamoru Otoyo, Masakazu Tamura
  • Publication number: 20130277919
    Abstract: A sealing device includes: a sealing ring (1) slidably in hermetic contact with a surface of a shaft (A); a hollow partition wall (2) in contact with the sealing ring (1); and a housing (B) holding the sealing ring (1) and supporting the hollow partition wall (2). The sealing ring (1) is formed of an elastic material, and includes a lip part (1a) in sliding contact with the entire periphery of the surface of the shaft (A), an elastic arm part (1b) supporting the lip part (1a) at a sliding contact position, and a key part (1c) connecting the elastic arm part (1b) and the housing (B). The straining force on the shaft (A) is adjusted by expansion and contraction of the hollow partition wall (2).
    Type: Application
    Filed: January 12, 2012
    Publication date: October 24, 2013
    Applicant: WARTSILA JAPAN LTD.
    Inventors: Nobuhiro Himeno, Mashiba Kyogoku, Masakazu Tamura
  • Publication number: 20130264777
    Abstract: A lip seal includes: a lip part (1) forming a ring shape alone or with plural members and provided in sliding contact with the entire periphery of a surface of a shaft (0); an elastic arm part (2) and a flexible wall (3) supporting the lip part (1) at a sliding contact position; key parts (4) connecting the elastic arm part (2) and the flexible wall (3) to a housing (10), respectively, and a pressure regulation chamber (A) forming a ring shape alone or with plural members and using the elastic arm part (2) and the flexible wall (3) as partition walls. The flexible wall (3) is deformed by the increase and decrease in pressure in the pressure regulation chamber (A) to change the lip part (1) at least radially.
    Type: Application
    Filed: December 14, 2011
    Publication date: October 10, 2013
    Applicant: WARTSILA JAPAN LTD.
    Inventors: Nobuhiro Himeno, Mashiba Kyogoku, Masakazu Tamura
  • Publication number: 20130102008
    Abstract: To provide a method for screening using cultured cells, intended to find a compound which increases the amount of sphingosine-1-phosphate or dihydrosphingosine-1-phosphate by SPL inhibitory activity rapidly, simply and highly sensitively. Provided are: a rapid and simple measurement method employing a scintillation proximity assay (SPA); a method with greatly improved detection sensitivity to the activity of a compound by controlling the concentration of the vitamin B6 group in a culture medium to be used in assaying; and others.
    Type: Application
    Filed: June 24, 2011
    Publication date: April 25, 2013
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Mamoru Otoyo, Masakazu Tamura
  • Patent number: 5750255
    Abstract: A high strength rock wool obtained by preliminarily calcining the starting material comprising industrial wastes such as shot and the like generated in the course of the production of a rock wool in a calcination temperature region of from 1,000.degree. to 1,250.degree. C. for a time of at least 1 minute but within 60 minutes in an oxidizing atmosphere, immediately crushing and pulverizing the resulting block-shaped calcined product, introducing the resulting particle-shaped calcined product into an electric furnace to melt the same and fiberizing the resulting melt by a spinner wheels and a process for producing the same. The said rock wool has a high strength appropriate to utilize in a thermal insulation material, a sound absorbing material and various reinforcing fibers.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: May 12, 1998
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Shizuo Yoshida, Masakazu Tamura, Eiichi Sakamoto, Akira Okada, Atsushi Yamasawa