Patents by Inventor Hiroyuki Niikura

Hiroyuki Niikura 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: 20240150561
    Abstract: An object of the present invention is to provide a resin composition having reduced deterioration in molding processability. The present invention provides a resin composition including polyethylene-based resin, an inorganic substance powder, zinc stearate, and stearic acid in predetermined ratios.
    Type: Application
    Filed: March 10, 2022
    Publication date: May 9, 2024
    Inventor: Hiroyuki NIIKURA
  • Publication number: 20220275168
    Abstract: Provided is a molded product in which blocking is reduced without impairing printability. Provided is a resin composition including: a polyolefin-based resin and an inorganic substance powder in a mass ratio of 50:50 to 10:90, in which the inorganic substance powder comprises calcium carbonate, the calcium carbonate comprises a first calcium carbonate having an average particle diameter of 0.5 ?m or more and less than 2.0 ?m measured by an air permeation method in accordance with JIS M-8511 and a second calcium carbonate having an average particle diameter of 2.0 ?m or more and less than 9.0 ?m measured by the air permeation method in accordance with JIS M-8511, and a mass ratio of the first calcium carbonate and the second calcium carbonate is 90:10 to 98:2.
    Type: Application
    Filed: May 8, 2020
    Publication date: September 1, 2022
    Inventors: Gouki SASAKAWA, Hiroyuki NIIKURA
  • Publication number: 20150297795
    Abstract: The object is to provide a carrier showing superior adhesion property and detachability, which is suitable for transferring a cell sheet. A carrier for transferring a cell sheet for transplantation comprising a cell sheet-adhesive coating layer that can respond to a non-cytotoxic condition and a support layer consisting of a base material acceptable as a medical material is provided. By applying a cell sheet adhering to the coating layer of the carrier to a transplantation site and providing the non-cytotoxic condition, the carrier can be detached and removed with maintaining the cell sheet at the transplantation site.
    Type: Application
    Filed: August 26, 2013
    Publication date: October 22, 2015
    Applicant: NIKKAN INDUSTRIES CO., LTD.
    Inventors: Toyoji Hibi, Koji Kato, Hiroyuki Niikura, Jun Watanabe, Masanori Kojima
  • Patent number: 7097437
    Abstract: A rotary fluid machine is provided that includes a rotor chamber (14), a rotor (41), vanes (48) guided by vane channels formed in the rotor (41), and pistons (47) slidably fitted in cylinders (44) provided in the rotor (41). Rollers (71) provided on support shafts (48d) of the vane (48) are rollably engaged with annular channels (74) of a casing (11) so as to interconvert reciprocation of the pistons (47) and rotational movement of the rotor (41). By capturing water of a hydrostatic bearing, which supports the vane (48) in the vane channel in a floating state, by a U-shaped lubricating water guide channel (43g) formed on the end face of a rotor segment (43) and discharging it into the annular channels (74), the water is prevented from flowing into the rotor chamber (14) and decreasing the temperature of steam, thereby preventing the output of the rotary fluid machine from being degraded.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: August 29, 2006
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yasunari Kimura, Hiroyuki Niikura, Tsutomu Takahashi, Hiroshi Ichikawa
  • Patent number: 6953083
    Abstract: A condenser is provided that makes a liquid droplet of a liquid phase medium drop effectively, the liquid phase medium residing in a lower end opening of a medium passage of the condenser, thereby preventing any degradation in the performance of the condenser. In the condenser, vapor, which is supplied to a cooling pipe (14) connected to cooling fins (16), is cooled, condensed into water, and recovered in a water-collecting tray (21) provided beneath the cooling pipe (14), and a needle-shaped member (24) provided so as to face the lower end opening of the cooling pipe (14) ruptures the droplet that, due to surface tension, resides in the lower end opening of the cooling pipe (14) and makes it drop into the water-collecting tray (21).
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: October 11, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yasunobu Kawakami, Tsutomu Takahashi, Hiroyoshi Taniguchi, Hiroyuki Niikura, Kiyoshi Katahira
  • Patent number: 6945050
    Abstract: A rotary fluid machine is provided that includes a rotor chamber (14), a rotor (41), vanes (48) guided by vane channels formed in the rotor (41), and pistons (47) slidably fitted in cylinders (44) provided in the rotor (41). Rollers (71), which have a greaseless bearing structure and are provided on support shafts (48d) of the vane (48), are rollably engaged with annular channels (74) of a casing (11) so as to interconvert reciprocation of the pistons (47) and rotational movement of the rotor (41). By guiding water for a hydrostatic bearing that supports the vane (48) in the vane channel in a floating state from a recess (48e) of the vane (48) to a hydrostatic bearing (71) of the roller (71) via water passages (W19 to W22), an outer member (71b) of the roller (71) is supported in a floating manner relative to an inner member (71a).
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: September 20, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yasunari Kimura, Tsuneo Endoh, Hiroyuki Niikura, Tsutomu Takahashi
  • Patent number: 6884051
    Abstract: An outer periphery of an output shaft integral with a rotor of an expander of a vane-type operated by a high-pressure vapor is supported at its opposite ends by a static-pressure bearing mounted at one end thereof in a floated state provided by a liquid film of a pressurized liquid-phase fluid supplied from a pressurized liquid-phase fluid feed bore through a pressurized liquid-phase fluid passage, and by a static-pressure bearing mounted at the other end thereof in a floated state provided by a liquid film of a pressurized liquid-phase fluid supplied from a pressurized liquid-phase fluid feed bore through pressurized liquid-phase fluid passages. Vanes supported radially in the rotor for reciprocal movement are supported in floated states by a liquid film of a pressurized liquid-phase fluid supplied through pressurized liquid-phase fluid passages extending radially outwards within the rotor.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: April 26, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Niikura, Hiroyoshi Taniguchi, Tsuyoshi Baba, Kensuke Honma, Hiroyuki Horimura, Tsuneo Endoh, Yasunobu Kawakami, Yasunari Kimura, Ryuji Sano, Kenji Matsumoto
  • Publication number: 20050076641
    Abstract: A rotary fluid machine is provided that includes a rotor chamber (14), a rotor (41), vanes (48) guided by vane channels formed in the rotor (41), and pistons (47) slidably fitted in cylinders (44) provided in the rotor (41). Rollers (71), which have a greaseless bearing structure and are provided on support shafts (48d) of the vane (48), are rollably engaged with annular channels (74) of a casing (11) so as to interconvert reciprocation of the pistons (47) and rotational movement of the rotor (41). By guiding water for a hydrostatic bearing that supports the vane (48) in the vane channel in a floating state from a recess (48e) of the vane (48) to a hydrostatic bearing (71) of the roller (71) via water passages (W19 to W22), an outer member (71b) of the roller (71) is supported in a floating manner relative to an inner member (71a).
    Type: Application
    Filed: September 20, 2002
    Publication date: April 14, 2005
    Inventors: Yasunari Kimura, Tsuneo Endoh, Hiroyuki Niikura, Tsutomu Takahashi
  • Publication number: 20050063855
    Abstract: A rotary fluid machine is provided that includes a rotor chamber (14), a rotor (41) housed within the rotor chamber (14), vanes (48) guided by vane channels formed in the rotor (41), and pistons (47) slidably fitted in cylinders (44) provided in the rotor (41). High temperature water of a hydrostatic bearing supporting the vane (48) in the vane channel in a floating state is retained by a plurality of pockets (48f) recessed in the surface of the vane (48), and the high temperature water retained by the pockets (48f) is supplied to the rotor chamber (14) during an expansion stroke as a result of radially outward movement of the vane (48) accompanying rotation of the rotor (41). The high temperature water supplied to the rotor chamber (14) is gasified into steam, and the pressure energy thereof improves the performance of the rotary fluid machine.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 24, 2005
    Inventors: Hiroyuki Niikura, Hiroshi Ichikawa, Yasunari Kimura, Yuichiro Tajima
  • Publication number: 20050031480
    Abstract: A rotary fluid machine is provided that includes a rotor chamber (14), a rotor (41), vanes (48) guided by vane channels formed in the rotor (41), and pistons (47) slidably fitted in cylinders (44) provided in the rotor (41). Rollers (71) provided on support shafts (48d) of the vane (48) are rollably engaged with annular channels (74) of a casing (11) so as to interconvert reciprocation of the pistons (47) and rotational movement of the rotor (41). By capturing water of a hydrostatic bearing, which supports the vane (48) in the vane channel in a floating state, by a U-shaped lubricating water guide channel (43g) formed on the end face of a rotor segment (43) and discharging it into the annular channels (74), the water is prevented from flowing into the rotor chamber (14) and decreasing the temperature of steam, thereby preventing the output of the rotary fluid machine from being degraded.
    Type: Application
    Filed: September 20, 2002
    Publication date: February 10, 2005
    Inventors: Yasunari Kimura, Hiroyuki Niikura, Tsutomu Takahashi, Hiroshi Ichikawa
  • Patent number: 6845618
    Abstract: In a Rankine cycle system for an internal combustion engine, including an evaporator (3) for generating a vapor, an expander (4) for converting a heat energy of the vapor into a mechanical energy, a condenser (5) for cooling the vapor discharged from the expander (4) to restore it into water, a tank (6) for storage of the water from the condenser (5), and supply pumps (7, 8) for supplying the water in said tank (6) to the evaporator (3) in a pressurizing manner, the water in the tank (6) is supplied via a water jacket (105) of the internal combustion engine (1) to a dispensing valve (106) by the lower-pressure pump (7). A portion of the water dispensed by the dispensing valve (106) is further pressurized and supplied to the evaporator (3) by the higher-pressure pump (8), and another portion of the water dispensed by the dispensing valve (106) is discharged to the tank (6) after dissipating its heat in an auxiliary (110) such as a heater for heating a vehicle compartment and the like.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: January 25, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Niikura, Hiroyoshi Taniguchi, Makoto Uda, Kiyoshi Katahira
  • Patent number: 6761030
    Abstract: A waste heat recovering device for a multi-cylinder internal combustion engine, wherein among a plurality of exhaust pipes extending from cylinders of a multi-cylinder internal combustion engine, a plurality of exhaust pipes unlikely to cause exhaust interference are collected to form one or more collecting pipes. A heat exchanger for recovering heat of exhaust gas is provided in the one or more collecting pipes. Therefore, a waste heat recovering device can be provided, in which the number of heat exchangers is reduced compared to the number of cylinders of the multi-cylinder internal combustion engine to reduce rest periods of the heat exchanger and reduce spaces occupied by the heat exchanger.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: July 13, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Niikura, Tsuneo Endoh, Yuichi Itoh, Naoki Ohta
  • Patent number: 6725662
    Abstract: In a drive system, there is provided a waste heat recovering device forming a Rankine cycle by an evaporator for heating water with waste heat of an internal combustion engine to generate high-pressure vapor, the internal combustion engine being connected to a transmission, a displacement-type expander for converting high-pressure vapor generated by the evaporator to an output with constant torque, a condenser for liquefying low-pressure vapor discharged from the expander, and a feed pump for supplying water liquefied by the condenser to the evaporator. The expander is connected to a power generator/motor via a planetary gear mechanism, and the expander is connected to an output shaft of the internal combustion engine via the planetary gear mechanism and a belt-type continuously variable transmission.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: April 27, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tsuyoshi Baba, Hiroyuki Niikura, Yasunobu Kawakami, Hiroyuki Horimura, Tsuneo Endoh
  • Publication number: 20040050052
    Abstract: In a Rankine cycle system for an internal combustion engine, including an evaporator (3) for generating a vapor, an expander (4) for converting a heat energy of the vapor into a mechanical energy, a condenser (5) for cooling the vapor discharged from the expander (4) to restore it into water, a tank (6) for storage of the water from the condenser (5), and supply pumps (7, 8) for supplying the water in said tank (6) to the evaporator (3) in a pressurizing manner, the water in the tank (6) is supplied via a water jacket (105) of the internal combustion engine (1) to a dispensing valve (106) by the lower-pressure pump (7). A portion of the water dispensed by the dispensing valve (106) is further pressurized and supplied to the evaporator (3) by the higher-pressure pump (8), and another portion of the water dispensed by the dispensing valve (106) is discharged to the tank (6) after dissipating its heat in an auxiliary (110) such as a heater for heating a vehicle compartment and the like.
    Type: Application
    Filed: October 6, 2003
    Publication date: March 18, 2004
    Inventors: Hiroyuki Niikura, Hiroyoshi Taniguchi, Makoto Uda, Kiyoshi Katahira
  • Publication number: 20030165393
    Abstract: An outer periphery of an output shaft (23) integral with a rotor (31) of an expander of a vane-type operated by a high-pressure vapor is supported at its opposite ends by a static-pressure bearing (25) mounted at one end thereof in a floated state provided by a liquid film of a pressurized liquid-phase fluid supplied from a pressurized liquid-phase fluid feed bore (129) through a pressurized liquid-phase fluid passage (W5), and by a static-pressure bearing (25) mounted at the other end thereof in a floated state provided by a liquid film of a pressurized liquid-phase fluid supplied from a pressurized liquid-phase fluid feed bore (129) through pressurized liquid-phase fluid passages (W6, W7, W9, W10. W11 and W12). Vanes (42) supported radially in the rotor (31) for reciprocal movement are supported in floated states by a liquid film of a pressurized liquid-phase fluid supplied through pressurized liquid-phase fluid passages (W14) extending radially outwards within the rotor (31).
    Type: Application
    Filed: February 27, 2003
    Publication date: September 4, 2003
    Inventors: Hiroyuki Niikura, Hiroyoshi Taniguchi, Tsuyoshi Baba, Kensuke Honma, Hiroyuki Horimura, Tsuneo Endoh, Yasunobu Kawakami, Yasunari Kimura, Ryuji Sano, Kenji Matsumoto
  • Publication number: 20030115877
    Abstract: In a drive system, there is provided a waste heat recovering device forming a Rankine cycle by an evaporator for heating water with waste heat of an internal combustion engine to generate high-pressure vapor, the internal combustion engine being connected to a transmission, a displacement-type expander for converting high-pressure vapor generated by the evaporator to an output with constant torque, a condenser for liquefying low-pressure vapor discharged from the expander, and a feed pump for supplying water liquefied by the condenser to the evaporator. The expander is connected to a power generator/motor via a planetary gear mechanism, and the expander is connected to an output shaft of the internal combustion engine via the planetary gear mechanism and a belt-type continuously variable transmission.
    Type: Application
    Filed: November 14, 2002
    Publication date: June 26, 2003
    Inventors: Tsuyoshi Bara, Hiroyuki Niikura, Yasunobu Kawakami, Hiroyuki Horimura, Tsuneo Endoh
  • Publication number: 20030106333
    Abstract: A condenser is provided that makes a liquid droplet of a liquid phase medium drop effectively, the liquid phase medium residing in a lower end opening of a medium passage of the condenser, thereby preventing any degradation in the performance of the condenser. In the condenser, vapor, which is supplied to a cooling pipe (14) connected to cooling fins (16), is cooled, condensed into water, and recovered in a water-collecting tray (21) provided beneath the cooling pipe (14), and a needle-shaped member (24) provided so as to face the lower end opening of the cooling pipe (14) ruptures the droplet that, due to surface tension, resides in the lower end opening of the cooling pipe (14) and makes it drop into the water-collecting tray (21).
    Type: Application
    Filed: December 30, 2002
    Publication date: June 12, 2003
    Inventors: Yasunobu Kawakami, Tsutomu Takahashi, Hiroyoshi Taniguchi, Hiroyuki Niikura, Kiyoshi Katahira
  • Publication number: 20030089110
    Abstract: A waste heat recovering device for a multi-cylinder internal combustion engine, wherein among a plurality of exhaust pipes extending from cylinders of a multi-cylinder internal combustion engine, a plurality of exhaust pipes unlikely to cause exhaust interference are collected to form one or more collecting pipes. A heat exchanger for recovering heat of exhaust gas is provided in the one or more collecting pipes. Therefore, a waste heat recovering device can be provided, in which the number of heat exchangers is reduced compared to the number of cylinders of the multi-cylinder internal combustion engine to reduce rest periods of the heat exchanger and reduce spaces occupied by the heat exchanger.
    Type: Application
    Filed: October 28, 2002
    Publication date: May 15, 2003
    Inventors: Hiroyuki Niikura, Tsuneo Endoh, Yuichi Itoh, Naoki Ohta
  • Patent number: 5390632
    Abstract: An engine cooling system comprises a cooling water circulation circuit interconnecting an engine body and a radiator, a bypass circuit connected to the cooling water circulation circuit to bypass the radiator, an electric-powered water pump disposed in the cooling water circulation circuit adjacent an engine inlet, a flow rate control valve for controlling the flow rate of cooling water flowing through the radiator, an outlet water temperature detector for detecting an engine outlet water temperature in the cooling water circulation circuit, an inlet water temperature detector for detecting an engine inlet water temperature in the cooling water circulation circuit, and a control means for controlling the operation of the water pump in accordance with at least the engine outlet water temperature and controlling the operation of the flow rate control valve in accordance with at least the engine inlet water temperature to thereby properly control the temperature of the cooling water in accordance with the operat
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: February 21, 1995
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hidehito Ikebe, Hiroyuki Niikura, Masaaki Hiratani, Hiroo Shimada, Koji Okazaki, Toshio Yokoyama