Patents by Inventor Masahide ITO

Masahide ITO 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: 11965556
    Abstract: A method for measuring indentation resistance includes: obtaining a first curve indicating a yield shear stress in a depth direction of a raceway surface of a material forming a rolling bearing in a state before the raceway surface is subjected to machining, a second curve indicating a static shear stress in the depth direction of the raceway surface in a state in which the raceway surface is subjected to the machining, and a third curve indicating a static shear stress in the depth direction of the raceway surface in a state in which rolling elements are in contact with the raceway surface and a static load is applied to the raceway surface; and obtaining a correlation between an area and an indentation depth of the raceway ring by defining a region surrounded by exceeding the first curve and the second curve and falling below the third curve as the area.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: April 23, 2024
    Assignee: NSK LTD.
    Inventors: Hirofumi Ito, Takahito Shimada, Masahide Natori, Hideyuki Hidaka, Hayato Ishigami, Hiroki Komata
  • Patent number: 9471277
    Abstract: Data measured by PS-OCT is corrected in a non-linear manner to enhance the quantitative analysis capability of PS-OCT and permit accurate quantitative diagnosis, including diagnosis of disease stage of lesions, as a useful means for computer diagnosis. Even when retardation per PS-OCT 1 contains error and becomes noise and its distribution is not normal or symmetrical around the true value, measured data is converted using a distribution conversion function obtained by analyzing the characteristics of noise via Monte Carlo simulation to remove the systematic error and estimate the true value otherwise buried in noise and thereby correct the PS-OCT 1 image more clearly.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: October 18, 2016
    Assignee: UNIVERSITY OF TSUKUBA
    Inventors: Yoshiaki Yasuno, Lian Duan, Masahide Ito
  • Patent number: 8879070
    Abstract: The scanning speed of a sample in Doppler OCT, etc., is increased to enable quick measurement of blood flow rate, blood flow volume, etc.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: November 4, 2014
    Assignee: University of Tsukuba
    Inventors: Yoshiaki Yasuno, Shuichi Makita, Masahide Ito
  • Patent number: 8818657
    Abstract: The shift control unit shifts the sub-transmission mechanism while changing the speed ratio of the variator in response to a change in the speed ratio of the sub-transmission mechanism so that the through speed ratio does not change after the through speed ratio is caused to reach the final through speed ratio by changing only the speed ratio of the variator if the speed ratio corresponding to the shift instruction from the driver is between a first speed ratio at which the sub-transmission mechanism is in the second gear position at the high speed side and the speed ratio of the variator is lowest and a second speed ratio at which the sub-transmission mechanism is in the first gear position at the low speed side and the speed ratio of the variator is highest when the manual mode is selected.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: August 26, 2014
    Assignee: Jatco Ltd
    Inventors: Hiroyasu Tanaka, Masahide Ito, Masato Mori, Takashi Eguchi, Ryousuke Nonomura, Seiichiro Takahashi, Mamiko Inoue
  • Patent number: 8718883
    Abstract: In a manual mode, a gear position of a continuously variable transmission is selected based on an input operation from a driver, a final through speed ratio is set based on the selected gear position and a variator and a sub-transmission mechanism are controlled to realize the final through speed ratio. Whether an input torque to the sub-transmission mechanism is positive or negative is determined based on an input torque to the sub-transmission mechanism when the manual mode is selected.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: May 6, 2014
    Assignee: Jatco Ltd
    Inventors: Hiroyasu Tanaka, Masahide Ito, Masato Mori, Takashi Eguchi, Ryousuke Nonomura, Seiichiro Takahashi, Mamiko Inoue
  • Publication number: 20140115022
    Abstract: Data measured by PS-OCT is corrected in a non-linear manner to enhance the quantitative analysis capability of PS-OCT and permit accurate quantitative diagnosis, including diagnosis of disease stage of lesions, as a useful means for computer diagnosis. Even when retardation per PS-OCT 1 contains error and becomes noise and its distribution is not normal or symmetrical around the true value, measured data is converted using a distribution conversion function obtained by analyzing the characteristics of noise via Monte Carlo simulation to remove the systematic error and estimate the true value otherwise buried in noise and thereby correct the PS-OCT 1 image more clearly.
    Type: Application
    Filed: April 25, 2012
    Publication date: April 24, 2014
    Applicant: UNIVERSITY OF TSUKUBA
    Inventors: Yoshiaki Yasuno, Lian Duan, Masahide Ito
  • Patent number: 8676454
    Abstract: The shift control unit executes a control to cause the through speed ratio to follow the final through speed ratio by changing only the speed ratio of the variator if a shift instruction is given from the driver a plurality of times in a row when the manual mode is selected, and advances the start of a change in the speed ratio of the sub-transmission mechanism or accelerates the progression of the change of the speed ratio as compared with the case where the manual mode is not selected when the speed ratio of the variator is maximized or minimized and the through speed ratio cannot follow the final through speed ratio.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: March 18, 2014
    Assignee: JATCO Ltd
    Inventors: Hiroyasu Tanaka, Masahide Ito, Masato Mori, Takashi Eguchi, Ryousuke Nonomura, Seiichiro Takahashi, Mamiko Inoue
  • Patent number: 8666616
    Abstract: A transmission control unit reduces a hydraulic pressure of a release-side frictional engagement element which is to be released of a sub-transmission mechanism and reduces this reduction amount as an input torque to the sub-transmission mechanism increases at the time of starting a shift when a manual mode is selected, the input torque is positive and the sub-transmission mechanism is to be shifted down.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: March 4, 2014
    Assignee: Jatco Ltd
    Inventors: Hiroyasu Tanaka, Masahide Ito, Masato Mori, Takashi Eguchi, Ryousuke Nonomura, Seiichiro Takahashi, Mamiko Inoue
  • Publication number: 20120120408
    Abstract: The scanning speed of a sample in Doppler OCT, etc., is increased to enable quick measurement of blood flow rate, blood flow volume, etc.
    Type: Application
    Filed: June 7, 2010
    Publication date: May 17, 2012
    Applicant: UNIVERSITY OF TSUKUBA
    Inventors: Yoshiaki Yasuno, Shuichi Makita, Masahide Ito
  • Publication number: 20120059558
    Abstract: In a manual mode, a gear position of a continuously variable transmission is selected based on an input operation from a driver, a final through speed ratio is set based on the selected gear position and a variator and a sub-transmission mechanism are controlled to realize the final through speed ratio. Whether an input torque to the sub-transmission mechanism is positive or negative is determined based on an input torque to the sub-transmission mechanism when the manual mode is selected.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 8, 2012
    Inventors: Hiroyasu TANAKA, Masahide Ito, Masato Mori, Takashi Eguchi, Ryousuke Nonomura, Seiichiro Takahashi, Mamiko Inoue
  • Publication number: 20120059556
    Abstract: The shift control unit shifts the sub-transmission mechanism while changing the speed ratio of the variator in response to a change in the speed ratio of the sub-transmission mechanism so that the through speed ratio does not change after the through speed ratio is caused to reach the final through speed ratio by changing only the speed ratio of the variator if the speed ratio corresponding to the shift instruction from the driver is between a first speed ratio at which the sub-transmission mechanism is in the second gear position at the high speed side and the speed ratio of the variator is lowest and a second speed ratio at which the sub-transmission mechanism is in the first gear position at the low speed side and the speed ratio of the variator is highest when the manual mode is selected.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 8, 2012
    Inventors: Hiroyasu TANAKA, Masahide Ito, Masato Mori, Takashi Eguchi, Ryousuke Nonomura, Seiichiro Takahashi, Mamiko Inoue
  • Publication number: 20120059559
    Abstract: The shift control unit executes a control to cause the through speed ratio to follow the final through speed ratio by changing only the speed ratio of the variator if a shift instruction is given from the driver a plurality of times in a row when the manual mode is selected, and advances the start of a change in the speed ratio of the sub-transmission mechanism or accelerates the progression of the change of the speed ratio as compared with the case where the manual mode is not selected when the speed ratio of the variator is maximized or minimized and the through speed ratio cannot follow the final through speed ratio.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 8, 2012
    Inventors: Hiroyasu TANAKA, Masahide Ito, Masato Mori, Takashi Eguchi, Ryousuke Nonomura, Seiichiro Takahashi, Mamiko Inoue
  • Publication number: 20120059557
    Abstract: A transmission control unit reduces a hydraulic pressure of a release-side frictional engagement element which is to be released of a sub-transmission mechanism and reduces this reduction amount as an input torque to the sub-transmission mechanism increases at the time of starting a shift when a manual mode is selected, the input torque is positive and the sub-transmission mechanism is to be shifted down.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 8, 2012
    Inventors: Hiroyasu TANAKA, Masahide Ito, Masato Mori, Takashi Eguchi, Ryousuke Nonomura, Seiichiro Takahashi, Mamiko Inoue
  • Publication number: 20100294002
    Abstract: The present invention provides a method for manufacturing an optical fiber preform, which provides an optical fiber with stable transmission loss characteristics, and improves manufacturing efficiency. The method for manufacturing an optical fiber preform comprises dehydrating the optical fiber soot preform by lowering the optical fiber soot preform within the muffle tube and passing through a heating region, pulling up the dehydrated optical fiber soot preform to the predetermined position, and sintering the optical fiber soot preform by lowering the optical fiber soot preform again within the muffle tube and passing through the heating region where temperature of the heating region is higher than temperature of the heating region in dehydrating; wherein A?B is satisfied where A is pull-up speed (mm/minute) of the optical fiber soot preform during the pulling up and B is gas flow rate (mm/minute) within the muffle tube at room temperature during the pulling up. Furthermore, 1.5×A?B is satisfied.
    Type: Application
    Filed: May 14, 2010
    Publication date: November 25, 2010
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masahide ITO, Jun TERADA, Shinji YOKOYAMA, Mitsuhiro KAWASAKI