Patents by Inventor Tatsuya Dazai
Tatsuya Dazai 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: 10743612Abstract: A midsole structure for a shoe not only maintains stability at the time of impacting the ground and improves cushioning property but also eliminates discomfort to a foot sole and improves ride feeling during running. The midsole structure (1) comprises at least two midsoles provided at a heel region of the shoe and having a hardness difference. On opposite sides of the heel region, an upper midsole (2) of a greater hardness has a thickness greater than a thickness of a lower midsole (3) of a smaller hardness. In a central part of the heel region, the lower midsole (3) of a smaller hardness has a thickness greater than a thickness of the upper midsole (2) of a greater hardness. Boundary surfaces (2B, 3A) between the upper midsole (2) and the lower midsole (3) do not appear on a top surface of the midsole structure (1) (that is, a foot sole contact surface (2A) of the upper midsole (2)).Type: GrantFiled: January 29, 2016Date of Patent: August 18, 2020Assignee: Mizuno CorporationInventors: Kazunori Iuchi, Tatsuya Dazai, Yoshitaka Takahashi, Takeshi Takeshita
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Patent number: 10433616Abstract: A sole structure for shoes includes a midsole and a plate member made of a hard resin harder than the midsole, which is joined to a lower surface of the midsole. The plate member includes a first reinforcement portion extending rearwardly from a position corresponding to a portion in the rear of a thenar of a user along a medial side arch region and a second reinforcement portion extending rearwardly on a lateral side from the position corresponding to the portion in the rear of the thenar of the user so as to avoid a position corresponding to a portion more frontward than a center of a fifth metatarsal bone.Type: GrantFiled: June 3, 2016Date of Patent: October 8, 2019Assignee: MIZUNO CORPORATIONInventors: Takeshi Takeshita, Tatsuya Dazai
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Publication number: 20180027923Abstract: A midsole structure for a shoe not only maintains stability at the time of impacting the ground and improves cushioning property but also eliminates discomfort to a foot sole and improves ride feeling during running. The midsole structure (1) comprises at least two midsoles provided at a heel region of the shoe and having a hardness difference. On opposite sides of the heel region, an upper midsole (2) of a greater hardness has a thickness greater than a thickness of a lower midsole (3) of a smaller hardness. In a central part of the heel region, the lower midsole (3) of a smaller hardness has a thickness greater than a thickness of the upper midsole (2) of a greater hardness. Boundary surfaces (2B, 3A) between the upper midsole (2) and the lower midsole (3) do not appear on a top surface of the midsole structure (1) (that is, a foot sole contact surface (2A) of the upper midsole (2)).Type: ApplicationFiled: January 29, 2016Publication date: February 1, 2018Applicant: Mizuno CorporationInventors: Kazunori IUCHI, Tatsuya DAZAI, Yoshitaka TAKAHASHI, Takeshi TAKESHITA
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Publication number: 20160353838Abstract: A sole structure for shoes includes a midsole and a plate member made of a hard resin harder than the midsole, which is joined to a lower surface of the midsole. The plate member includes a first reinforcement portion extending rearwardly from a position corresponding to a portion in the rear of a thenar of a user along a medial side arch region and a second reinforcement portion extending rearwardly on a lateral side from the position corresponding to the portion in the rear of the thenar of the user so as to avoid a position corresponding to a portion more frontward than a center of a fifth metatarsal bone.Type: ApplicationFiled: June 3, 2016Publication date: December 8, 2016Inventors: Takeshi TAKESHITA, Tatsuya DAZAI
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Patent number: 9232831Abstract: The heel counter structure includes a sole plate provided at least at the heel region of the shoe and having a peripheral portion. The peripheral portion is upraised along the heel region of the shoe so as to enclose the lower portion of the heel portion of the foot of the wearer. The heel structure also includes a pair of heel counter portions provided on the medial and lateral sides of the heel region of the shoe so as to sandwich the heel portion of the foot sideways. The heel counter portions are coupled to the peripheral portion of the sole plate at the lower ends of the heel counter portions so that the heel counter portions can tilt inwardly and outwardly independently of the sole plate. The heel counter portions are separated from the peripheral portion of the sole plate except the lower ends of the heel counter portions.Type: GrantFiled: May 24, 2012Date of Patent: January 12, 2016Assignee: Mizuno CorporationInventors: Takaya Kimura, Tatsuya Dazai, Takao Oda
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Publication number: 20120304491Abstract: The heel counter structure includes a sole plate provided at least at the heel region of the shoe and having a peripheral portion. The peripheral portion is upraised along the heel region of the shoe so as to enclose the lower portion of the heel portion of the foot of the wearer. The heel structure also includes a pair of heel counter portions provided on the medial and lateral sides of the heel region of the shoe so as to sandwich the heel portion of the foot sideways. The heel counter portions are coupled to the peripheral portion of the sole plate at the lower ends of the heel counter portions so that the heel counter portions can tilt inwardly and outwardly independently of the sole plate. The heel counter portions are separated from the peripheral portion of the sole plate except the lower ends of the heel counter portions.Type: ApplicationFiled: May 24, 2012Publication date: December 6, 2012Applicant: MIZUNO CORPORATIONInventors: Takaya KIMURA, Tatsuya DAZAI, Takao ODA
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Publication number: 20120255200Abstract: The upper structure for a shoe includes an upper body formed of stretchable material and covering at least the tiptoe of the foot of a shoe wearer. The structure further includes a toe pressing member located at a position corresponding to toes of the foot, surrounded by the upper body, and formed of non-stretchable material. The toe pressing member presses the toes of the foot from above when the toes of the foot come into contact with the backside of the upper body at the time of dorsal flexion of the foot.Type: ApplicationFiled: March 28, 2012Publication date: October 11, 2012Applicant: MIZUNO CORPORATIONInventors: Takao ODA, Tatsuya DAZAI, Takaya KIMURA
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Patent number: D675815Type: GrantFiled: March 29, 2012Date of Patent: February 12, 2013Assignee: Mizuno CorporationInventors: Tatsuya Dazai, Tomoyuki Yonekawa, Takao Oda