Patents by Inventor Tatsuya Takashima
Tatsuya Takashima 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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Publication number: 20240158884Abstract: A clad steel plate having tensile strength (TS) of 780 MPa or more, excellent ductility, bendability, collision resistance, and LME resistance. The clad steel plate having a base metal and a cladding metal on front and back surfaces of the base metal, and the chemical composition and microstructure of the base metal and the cladding metal being appropriately controlled so that the average Vickers hardness (HVL) of the cladding metal is 260 or less, the average Vickers hardness (HVL) of the cladding metal divided by the average Vickers hardness (HVB) of the base metal is 0.80 or less, the boundary roughness between the base metal and the cladding metal is 50 ?m or less at the maximum height Ry, and the number of voids at the boundary between the base metal and the cladding metal is controlled to 20 or fewer per 10 mm length of the boundary.Type: ApplicationFiled: February 28, 2022Publication date: May 16, 2024Applicant: JFE STEEL CORPORATIONInventors: Yoshiyasu KAWASAKI, Yuki TOJI, Tatsuya NAKAGAITO, Shinya YAMAGUCHI, Masayasu UENO, Katsutoshi TAKASHIMA, Tomohiro ONO
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Publication number: 20240150876Abstract: A clad steel plate having tensile strength (TS) of 780 MPa or more, excellent bendability, collision resistance, and LME resistance. The clad steel plate having a base metal and a cladding metal on front and back surfaces of the base metal, and the chemical composition and microstructure of the base metal and the cladding metal being appropriately controlled so that the average Vickers hardness (HVL) of the cladding metal is 260 or less, the average Vickers hardness (HVL) of the cladding metal divided by the average Vickers hardness (HVB) of the base metal is 0.80 or less, the boundary roughness between the base metal and the cladding metal is 50 ?m or less at the maximum height Ry, and the number of voids at the boundary between the base metal and the cladding metal is controlled to 20 or fewer per 10 mm length of the boundary.Type: ApplicationFiled: February 28, 2022Publication date: May 9, 2024Applicant: JFE STEEL CORPORATIONInventors: Yoshiyasu KAWASAKI, Yuki TOJI, Tatsuya NAKAGAITO, Shinya YAMAGUCHI, Masayasu UENO, Katsutoshi TAKASHIMA, Tomohiro ONO
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Patent number: 7279719Abstract: A counter reflecting surface is provided opposite to a light emitting element in its light emitting surface. A side reflecting member having an inclined reflecting surface is provided apart from and so as to surround the light emitting element. A phosphor layer is provided on the counter reflecting surface and the reflecting surface of the side reflecting member.Type: GrantFiled: March 21, 2003Date of Patent: October 9, 2007Assignee: Toyoda Gosei Co., Ltd.Inventors: Yoshinobu Suehiro, Hideki Mori, Tatsuya Takashima
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Patent number: 6998777Abstract: A light emitting diode has: a ceramics substrate that has a high thermal conductivity; a light emitting element that is mounted on the ceramics substrate; and a radiation plate that is bonded to the back surface of the ceramics substrate. The radiation plate contacts the ceramics substrate at a contact region that includes a region of the back surface of the ceramics substrate corresponding to a region of the ceramics substrate on which the light emitting element is mounted.Type: GrantFiled: December 10, 2003Date of Patent: February 14, 2006Assignee: Toyoda Gosei Co., Ltd.Inventors: Yoshinobu Suehiro, Mitsuhiro Inoue, Hideaki Kato, Tatsuya Takashima
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Patent number: 6943379Abstract: In a light emitting diode, a blue light emitting element is mounted on a base having a cup through a phosphor-containing mount so that the light emitting element is located within the cup and is mounted on the bottom of the cup through the phosphor-containing mount. The light emitting diode includes a light emitting element and a p electrode. By virtue of the above construction, blue light emitted from the light emitting element can be reflected from the lower surface of the p electrode without being radiated directly from the upper surface of the light emitting element to the outside of the light emitting diode. As a result, the blue light emitted from the light emitting element can be efficiently mixed with yellow light given off from the phosphor in the phosphor-containing mount to provide white light which is radiated to the outside of the light emitting diode with high efficiency.Type: GrantFiled: March 24, 2003Date of Patent: September 13, 2005Assignee: Toyoda Gosei Co., Ltd.Inventors: Yoshinobu Suehiro, Hitomi Kawano, Tatsuya Takashima, Yuji Takahashi, Atsuo Hirano
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Publication number: 20040169466Abstract: A light emitting diode has: a ceramics substrate that has a high thermal conductivity; a light emitting element that is mounted on the ceramics substrate; and a radiation plate that is bonded to the back surface of the ceramics substrate. The radiation plate contacts the ceramics substrate at a contact region that includes a region of the back surface of the ceramics substrate corresponding to a region of the ceramics substrate on which the light emitting element is mounted.Type: ApplicationFiled: December 10, 2003Publication date: September 2, 2004Applicant: Toyoda Gosei Co., Ltd.Inventors: Yoshinobu Suehiro, Mitsuhiro Inoue, Hideaki Kato, Tatsuya Takashima
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Publication number: 20030230757Abstract: In a light emitting diode, a blue light emitting element is mounted on a base having a cup through a phosphor-containing mount so that the light emitting element is located within the cup and is mounted on the bottom of the cup through the phosphor-containing mount. The light emitting diode includes a light emitting element and a p electrode. By virtue of the above construction, blue light emitted from the light emitting element can be reflected from the lower surface of the p electrode without being radiated directly from the upper surface of the light emitting element to the outside of the light emitting diode. As a result, the blue light emitted from the light emitting element can be efficiently mixed with yellow light given off from the phosphor in the phosphor-containing mount to provide white light which is radiated to the outside of the light emitting diode with high efficiency.Type: ApplicationFiled: March 24, 2003Publication date: December 18, 2003Applicant: Toyoda Gosei Co., Ltd.Inventors: Yoshinobu Suehiro, Hitomi Kawano, Tatsuya Takashima, Yuji Takahashi, Atsuo Hirano
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Publication number: 20030201451Abstract: A counter reflecting surface is provided opposite to a light emitting element in its light emitting surface. A side reflecting member having an inclined reflecting surface is provided apart from and so as to surround the light emitting element. A phosphor layer is provided on the counter reflecting surface and the reflecting surface of the side reflecting member.Type: ApplicationFiled: March 21, 2003Publication date: October 30, 2003Applicant: Toyoda Gosei Co., Ltd.Inventors: Yoshinobu Suehiro, Hideki Mori, Tatsuya Takashima
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Patent number: 5051183Abstract: A microporous polyolefin membrane made of a polyolefin composition containing 1 weight % or more of an ultra-high-molecular-weight polyolefin having a weight-average molecular weight of 7.times.10.sup.5 or more and having a weight-average molecular weight/number-average molecular weight ratio of 10-300, the microporous membrane having a thickness of 0.1-25 .mu.m, a porosity of 35-95%, an average pore diameter of 0.001-0.2 .mu.m and a breaking strength of 0.2 kg or more per 15 mm width is produced by (a) preparing a solution comprising 10-50 weight % of the polyolefin composition and 50-90 weight % of a solvent; (b) extruding the solution through a die; (c) cooling the extruded solution to form a gel-like article; (d) stretching the gel-like article at a temperature equal to or lower than a melting point of the polyolefin composition +10.degree. C; and (e) removing the remaining solvent.Type: GrantFiled: September 20, 1990Date of Patent: September 24, 1991Assignee: Tonen CorporationInventors: Kotaro Takita, Koichi Kono, Tatsuya Takashima, Kenkichi Okamoto