Patents by Inventor Yuri Takahashi
Yuri Takahashi 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).
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Patent number: 11311928Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; refrigerant guide grooves in the press-molding surface to guide a refrigerant ejected from the refrigerant ejection ports to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece; a single connecting groove connected to the refrigerant guide grooves and formed at the outer portion of the press-molding surface into which the refrigerant flows through the refrigerant guide grooves; and discharge ports in the connecting groove. Each of the refrigerant discharge ports is formed at a part of the connecting groove apart from the connecting points between the connecting groove and the refrigerant guide grooves.Type: GrantFiled: January 13, 2020Date of Patent: April 26, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Yuri Takahashi, Takeshi Matsuda, Kenji Nakamura, Chie Okawa, Ichirou Ino, Naoyuki Irie
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Patent number: 11198171Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; and three or more independent refrigerant guide grooves extending in the press-molding surface from the refrigerant ejection ports to guide the refrigerant ejected from the refrigerant ejection port to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece. Each of the refrigerant guide grooves neither branches halfway nor merges with the others of the refrigerant guide grooves to extend from the refrigerant ejection ports to the outer portion of the press-molding surface.Type: GrantFiled: January 13, 2020Date of Patent: December 14, 2021Assignee: MAZDA MOTOR CORPORATIONInventors: Yuri Takahashi, Takeshi Matsuda, Kenji Nakamura, Chie Okawa, Ichirou Ino, Naoyuki Irie
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Publication number: 20200238363Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; refrigerant guide grooves in the press-molding surface to guide a refrigerant ejected from the refrigerant ejection ports to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece; a single connecting groove connected to the refrigerant guide grooves and formed at the outer portion of the press-molding surface into which the refrigerant flows through the refrigerant guide grooves; and discharge ports in the connecting groove. Each of the refrigerant discharge ports is formed at a part of the connecting groove apart from the connecting points between the connecting groove and the refrigerant guide grooves.Type: ApplicationFiled: January 13, 2020Publication date: July 30, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Yuri TAKAHASHI, Takeshi MATSUDA, Kenji NAKAMURA, Chie OKAWA, Ichirou INO, Naoyuki IRIE
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Publication number: 20200238362Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; and three or more independent refrigerant guide grooves extending in the press-molding surface from the refrigerant ejection ports to guide the refrigerant ejected from the refrigerant ejection port to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece. Each of the refrigerant guide grooves neither branches halfway nor merges with the others of the refrigerant guide grooves to extend from the refrigerant ejection ports to the outer portion of the press-molding surface.Type: ApplicationFiled: January 13, 2020Publication date: July 30, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Yuri TAKAHASHI, Takeshi MATSUDA, Kenji NAKAMURA, Chie OKAWA, Ichirou INO, Naoyuki IRIE
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Publication number: 20200206987Abstract: A hot-pressing device includes at least one mold having a molding surface; and at least one mold holder, wherein the hot-pressing device further comprises a refrigerant supply groove provided so as to horizontally extend to at least a mold side or a mold holder side in a contact surface between the at least one mold and the at least one mold holder; and at least one refrigerant supply path opened in corresponding at least one opening disposed on the molding surface, the refrigerant supply path communicating with the refrigerant supply groove and being provided in the inside of the at least one mold so as to extend vertically.Type: ApplicationFiled: November 27, 2019Publication date: July 2, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Takeshi MATSUDA, Masaru TOBO, Yuri TAKAHASHI, Kenji NAKAMURA, Yoshihide HIRAO, Chie OKAWA, Seiji INOUE, Naoyuki IRIE
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Patent number: 7103467Abstract: When the output of the AFR ratio sensor is stable in a steady operating state, the amount of fuel is increased by step inputting to detect a point where the gradient of change in the sensor output exceeds a threshold value as a point of start of change. The time from the timing of increasing the fuel until the point of start of change is detected as a dead time. A response time is calculated until the amount of change in the sensor output reaches a predetermined ratio of the amount of change (AA?BA) of up to the steady value AA of the sensor output after the amount of the fuel is increased from the steady value BA of the sensor output before the amount of the fuel is increased. The fail condition in the AFR ratio sensor is determined based on the dead time TA and the response time TB.Type: GrantFiled: March 25, 2005Date of Patent: September 5, 2006Assignee: Denso CorporationInventors: Yuri Takahashi, Hisashi Iida, Shuujirou Morinaga, Naoki Yoshiume
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Publication number: 20050216175Abstract: When the output of the AFR ratio sensor is stable in a steady operating state, the amount of fuel is increased by step inputting to detect a point where the gradient of change in the sensor output exceeds a threshold value as a point of start of change. The time from the timing of increasing the fuel until the point of start of change is detected as a dead time. A response time is calculated until the amount of change in the sensor output reaches a predetermined ratio of the amount of change (AA?BA) of up to the steady value AA of the sensor output after the amount of the fuel is increased from the steady value BA of the sensor output before the amount of the fuel is increased. The fail condition in the AFR ratio sensor is determined based on the dead time TA and the response time TB.Type: ApplicationFiled: March 25, 2005Publication date: September 29, 2005Applicant: DENSO CORPORATIONInventors: Yuri Takahashi, Hisashi Iida, Shuujirou Morinaga, Naoki Yoshiume