Patents by Inventor Makoto Tojo
Makoto Tojo 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: 11697238Abstract: An extruder which can be applied to various types of resin and elastomer without having to replace a die is provided. An extruder of the present inventions has: a barrel to which raw material, that is raw elastomer or raw material resin, is supplied; a screw that is driven to rotate in the barrel in order to process the raw material together with the barrel; and die 5 that is provided at a discharge point of the barrel and that discharges the raw material that has been processed. Die 5 includes first flat plate 11 having at least one first hole 13 and second flat plate 12 having at least one second hole 14, wherein first flat plate 11 and second flat plate 12 are arranged adjacent to each other along longitudinal axis X1 of the barrel, and at least either first flat plate 11 or second flat plate 12 is movable relative to the other flat plate such that an overlapping part of first hole 13 and second hole 14 can be varied.Type: GrantFiled: November 1, 2017Date of Patent: July 11, 2023Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Kiyoshi Handa, Yohei Shimizu, Makoto Tojo, Jun Kakizaki
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Patent number: 11312056Abstract: A twin screw extruder (10) for producing a fiber-reinforced resin composition, which is obtained by charging the extruder with a thermoplastic resin and reinforcing fibers in roving form and the reinforcing fibers being fibrillated/cut and being dispersed/kneaded into the thermoplastic resin, comprises: a plate-shaped blade (15), which protrudes from the inner surface of a cylinder (11) and faces a screw (20) and the longitudinal direction of which faces the axial direction of the cylinder; and a height adjustment means (16) for adjusting the gap between the blade (15) and the screw (20).Type: GrantFiled: August 4, 2017Date of Patent: April 26, 2022Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Yoshitaka Kimura, Makoto Tojo, Daigo Saga
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Publication number: 20210373061Abstract: A measurement probe that measures a change in an optical signal caused by electro-optic effect according to an electromagnetic wave, and measures spatial distribution characteristics of the electromagnetic wave, based on differential values detected while the measurement probe and the electromagnetic wave move relative to each other. The measurement probe includes a first measurement device having a sensor structure including an electro-optic crystal that exhibits the electro-optic effect, an optical fiber that is provided on a root side of the electro-optic crystal and transmits the optical signal, and a reflection device that is provided on a tip end side of the electro-optic crystal and reflects the optical signal, and a second measurement device having the sensor structure. In first and second directions perpendicular to a fiber axis direction, a size of the electro-optic crystal is set to one third or less of a wavelength of the target electromagnetic wave.Type: ApplicationFiled: November 1, 2019Publication date: December 2, 2021Applicants: NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, Think-Lands Co., Ltd.Inventors: Shintaro HISATAKE, Yoichi OIKAWA, Kunio MIYAJI, Makoto TOJO
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Publication number: 20210263089Abstract: A measurement probe used in an electromagnetic wave measurement system is provided. The measurement probe includes a first measurement device and a second measurement device. The first measurement device includes a first electro-optic crystal that exhibits an electro-optic effect, a first optical fiber that is provided on a root side of the first electro-optic crystal and transmits an optical signal, and a first reflector that is provided on a tip side of the first electro-optic crystal and reflects the optical signal. The second measurement device includes a second electro-optic crystal, a second optical fiber, and a second reflector. The first and second electro-optic crystals form one electro-optic crystal, and the first and second optical fibers are connected to a root side of the one electro-optic crystal.Type: ApplicationFiled: May 6, 2021Publication date: August 26, 2021Applicants: Think-Lands Co., Ltd., NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEMInventors: Shintaro HISATAKE, Yoichi Oikawa, Kunio Miyaji, Makoto Tojo
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Publication number: 20210138711Abstract: A twin screw extruder (10) for producing a fiber-reinforced resin composition, which is obtained by charging the extruder with a thermoplastic resin and reinforcing fibers in roving form and the reinforcing fibers being fibrillated/cut and being dispersed/kneaded into the thermoplastic resin, comprises: a plate-shaped blade (15), which protrudes from the inner surface of a cylinder (11) and faces a screw (20) and the longitudinal direction of which faces the axial direction of the cylinder; and a height adjustment means (16) for adjusting the gap between the blade (15) and the screw (20).Type: ApplicationFiled: August 4, 2017Publication date: May 13, 2021Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Yoshitaka KIMURA, Makoto TOJO, Daigo SAGA
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Publication number: 20200338801Abstract: An extruder which can be applied to various types of resin and elastomer without having to replace a die is provided. An extruder of the present inventions has: a barrel to which raw material, that is raw elastomer or raw material resin, is supplied; a screw that is driven to rotate in the barrel in order to process the raw material together with the barrel; and die 5 that is provided at a discharge point of the barrel and that discharges the raw material that has been processed. Die 5 includes first flat plate 11 having at least one first hole 13 and second flat plate 12 having at least one second hole 14, wherein first flat plate 11 and second flat plate 12 are arranged adjacent to each other along longitudinal axis X1 of the barrel, and at least either first flat plate 11 or second flat plate 12 is movable relative to the other flat plate such that an overlapping part of first hole 13 and second hole 14 can be varied.Type: ApplicationFiled: November 1, 2017Publication date: October 29, 2020Applicant: The Japan Steel Works, Ltd.Inventors: Kiyoshi HANDA, Yohei SHIMIZU, Makoto TOJO, Jun KAKIZAKI
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Patent number: 10518441Abstract: An extruder (1) includes a cylinder (2) and a screw (3), and one or more front vents (8a) are provided on the cylinder (2) upstream of a hopper (5) and downstream of a rear vent (7). The cylinder (2) is provided with, between the hopper (5) and the rear vent (7), a liquid supply device (9) for spraying water into the cylinder (2) to cool an interior thereof and a liquid discharge port (12) that is opened in a lower portion of the cylinder (2).Type: GrantFiled: January 13, 2016Date of Patent: December 31, 2019Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Makoto Tojo, Yohei Shimizu, Daigo Saga
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Publication number: 20180001514Abstract: An extruder (1) includes a cylinder (2) and a screw (3), and one or more front vents (8a) are provided on the cylinder (2) upstream of a hopper (5) and downstream of a rear vent (7). The cylinder (2) is provided with, between the hopper (5) and the rear vent (7), a liquid supply device (9) for spraying water into the cylinder (2) to cool an interior thereof and a liquid discharge port (12) that is opened in a lower portion of the cylinder (2).Type: ApplicationFiled: January 13, 2016Publication date: January 4, 2018Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Makoto TOJO, Yohei SHIMIZU, Daigo SAGA
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Patent number: 9731448Abstract: A vent assembly device for a twin-screw extruder includes a vent assembly (7) that has a vent opening (6) and that is provided in a cylinder (1) of a twin-screw extruder (11) having a left axis-side screw (2) and a right axis-side screw (3). The size of at least the vent opening (6) of the vent assembly (7) can be freely modified by forming the vent assembly (7) from a plurality of vent assembly units (7a) and by providing the plurality of vent assembly units (7a) for one vent opening (6).Type: GrantFiled: February 13, 2014Date of Patent: August 15, 2017Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Makoto Tojo, Yoshihiko Iwamoto, Jun Kakizaki
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Publication number: 20150314512Abstract: The vent assembly device for a twin-screw extruder according to the present invention includes a vent assembly (7) that has a vent opening (6) and that is provided in a cylinder (1) of a twin-screw extruder (11) having a left axis-side screw (2) and a right axis-side screw (3). The size of at least the vent opening (6) of the vent assembly (7) can be freely modified by forming the vent assembly (7) from a plurality of vent assembly units (7a) and by providing the plurality of vent assembly units (7a) for one vent opening (6).Type: ApplicationFiled: February 13, 2014Publication date: November 5, 2015Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Makoto TOJO, Yoshihiko IWAMOTO, Jun KAKIZAKI
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Patent number: 7565949Abstract: An image display module include a flat panel display, a sound source element disposed on a rear surface side opposite to a display observation side of the panel display, and a sound leading path through which a sound wave generated from the sound source element is led to the display observation side.Type: GrantFiled: September 25, 2006Date of Patent: July 28, 2009Assignee: Casio Computer Co., Ltd.Inventor: Makoto Tojo
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Publication number: 20070071259Abstract: An image display module include a flat panel display, a sound source element disposed on a rear surface side opposite to a display observation side of the panel display, and a sound leading path through which a sound wave generated from the sound source element is led to the display observation side.Type: ApplicationFiled: September 25, 2006Publication date: March 29, 2007Applicant: CASIO COMPUTER CO., LTD.Inventor: Makoto Tojo
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Patent number: RE45925Abstract: An image display module include a flat panel display, a sound source element disposed on a rear surface side opposite to a display observation side of the panel display, and a sound leading path through which a sound wave generated from the sound source element is led to the display observation side.Type: GrantFiled: July 15, 2011Date of Patent: March 15, 2016Assignee: CASIO COMPUTER CO., LTD.Inventor: Makoto Tojo