Patents by Inventor Takahiro Muramatsu

Takahiro Muramatsu 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: 8801055
    Abstract: A door lock mechanism 100 comprises a door handle 110 including a turning grip part 110A, an open rod 120 which engages with the turning of the grip part 110A and opens a door by moving in a first direction, a key rod 140 which is linked to a key cylinder 115 and locks the door by moving in a second direction, a first engaging part 150 which is attached to open rod 120 and protrudes in a direction which intersects a movement direction of open rod 120, a second engaging part 160 which is attached to key rod 140 and protrudes in a direction which intersects a movement direction of key rod 140, and a displacement restricting part 170 which is fixed to the vehicle body and positioned further to the inside of the vehicle than first engaging part 150 and second engaging part 160.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: August 12, 2014
    Assignee: Suzuki Motor Corporation
    Inventor: Takahiro Muramatsu
  • Patent number: 8361940
    Abstract: A low sulfated ash, tow sulfur, low phosphorus, low zinc lubricating, oil composition preferably employable for internal combustion engines using a low sulfur hydrocarbon fuel comprises a base oil having a saturated component of 85 wt. % or more, a viscosity index of 110 or more, and a sulfur content of 0.01 wt. % or less; an alkaline earth metal-containing detergent; a nitrogen-containing ashless dispersant of a weight average molecular weight of 4,500 or more; a phenolic or amine oxidation inhibitor; and a basic nitrogen-containing compound-oxymolybdenum complex.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: January 29, 2013
    Assignee: Chevron Japan Ltd.
    Inventors: Morikuni Nakazato, Yoshitaka Takeuchi, Takahiro Muramatsu
  • Publication number: 20110271721
    Abstract: A door lock mechanism 100 comprises a door handle 110 including a turning grip part 110A, an open rod 120 which engages with the turning of the grip part 110A and opens a door by moving in a first direction, a key rod 140 which is linked to a key cylinder 115 and locks the door by moving in a second direction, a first engaging part 150 which is attached to open rod 120 and protrudes in a direction which intersects a movement direction of open rod 120, a second engaging part 160 which is attached to key rod 140 and protrudes in a direction which intersects a movement direction of key rod 140, and a displacement restricting part 170 which is fixed to the vehicle body and positioned further to the inside of the vehicle than first engaging part 150 and second engaging part 160.
    Type: Application
    Filed: November 10, 2010
    Publication date: November 10, 2011
    Applicant: SUZUKI MOTOR CORPORATION
    Inventor: Takahiro MURAMATSU
  • Publication number: 20090005278
    Abstract: A lubricating oil composition for internal combustion engines comprising a base oil having and lubricating viscosity and additives composed of a) a salt of an alkali metal or alkaline earth metal and an alkylsalicylate and/or an alkylcarboxylate, b) a nitrogen atom-containing ashless dispersant and/or a nitrogen atom-containing dispersive viscosity index improver, c) a neutral salt of a fatty acid and a fatty amine, and d) oxidation inhibitor, is effective for lubricating diesel engines using a low sulfur-content fuel, even though it has a low sulfated ash content, a low sulfur content and a low phosphorus content.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 1, 2009
    Inventors: Yoshitake Takeuchi, Takahiro Muramatsu, Yoshito Yamashita, Morikuni Nakazato
  • Publication number: 20080076686
    Abstract: A low sulfated ash, tow sulfur, low phosphorus, low zinc lubricating, oil composition preferably employable for internal combustion engines using a low sulfur hydrocarbon fuel comprises a base oil having a saturated component of 85 wt. % or more, a viscosity index of 110 or more, and a sulfur content of 0.01 wt. % or less; an alkaline earth metal-containing detergent; a nitrogen-containing ashless dispersant of a weight average molecular weight of 4,500 or more; a phenolic or amine oxidation inhibitor; and a basic nitrogen-containing compound-oxymolybdenum complex.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 27, 2008
    Inventors: Morikuni Nakazato, Yoshitaka Takeuchi, Takahiro Muramatsu
  • Publication number: 20010044391
    Abstract: A lubricating oil composition comprising a zinc dithiophosphate and a zinc saturated aliphatic monocarboxylate dissolved in a base oil, wherein the zinc dithiophosphate and zinc saturated aliphatic monocarboxylate are in the ratio of equivalents from 6:1 to 45:1.
    Type: Application
    Filed: February 12, 1998
    Publication date: November 22, 2001
    Inventors: MICHIO SHIGA, TAKAHIRO MURAMATSU, HIROMICHI MATSUURA
  • Patent number: 5569405
    Abstract: An engine oil composition having a base oil, an ashless dispersant, a metal-containing detergent, zinc dithiophosphate and a sulfur-containing phenol derivative. Examples of sulfur-containing phenol derivative include 2,4-bis{(octylthio)methyl}-o-cresol, 2,2-thiodiethylenebis{3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate}, and tridecyl 2-(3,5-di-ti-butyl-4-hydroxybenzylthio)acetate.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: October 29, 1996
    Assignee: Chevron Chemical Company
    Inventors: Morikuni Nakazato, Takahiro Muramatsu, Shigeru Iwamoto
  • Patent number: 5551401
    Abstract: An air suction system for an internal combustion engine in which one of two air intake port sections is provided with an air intake control valve to provide enhanced atomization and ensure a sufficient airflow. The air suction system, according to an embodiment of the invention, has a passage cross-section of a first injection passage portion which is greater in area than that of a second injection passage portion. The first and second injection passage portions respectively communicate with the first and second intake port sections. In a variation, the first and second injection passage portions have passage cross-sections adjacent to the first and second nozzle hole portions of smaller cross-sectional area, and the first and second injection passage portions have passage cross-sections adjacent the first and second intake port sections of larger cross-sectional area.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: September 3, 1996
    Assignee: Suzuki Motor Corporation
    Inventors: Hideki Komada, Takahiro Muramatsu, Yuji Yamamoto