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Akamizu
Hiroshi Akamizu, Kobe-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090242085 | DUAL PHASE STEEL SHEET WITH GOOD BAKE-HARDENING PROPERTIES - A dual phase steel sheet with good bake-hardening properties is provided. The steel sheet is characterized in containing (in terms of percent by mass) C: no less than 0.06% and less than 0.25%; Si+Al: 0.5 to 3%; Mn: 0.5 to 3%; P: no more than 0.15%; and S: no more than 0.02%; and also meeting the following condition (in terms of space factor) that retained austenite is at least 3%, bainite is at least 30%, and ferrite is no more than 50%, and further characterized in differing in stress larger than 50 MPa before and after application of 2% pre-strain and ensuing heat treatment for paint baking at 170° C. for 20 minutes. The steel sheet has well-balanced strength and workability, exhibits good bake-hardening properties at the time of paint baking, and offers good resistance to natural aging. | 10-01-2009 |
| 20100092332 | HIGH-STRENGTH COLD ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY, AND PLATED STEEL SHEET - To provide a high-strength cold rolled steel sheet that has well-balanced tensile strength and elongation as well as well-balanced tensile strength and stretch-flangeability, and a plated steel sheet manufactured by plating the steel sheet. | 04-15-2010 |
Hiroshi Akamizu, Hyogo JP
| Patent application number | Description | Published |
|---|---|---|
| 20080251160 | High-Strength Cold-Rolled Steel Sheet Excellent in Uniform Elongation and Method for Manufacturing Same - A high-strength cold-rolled steel sheet excellent in uniform elongation, including in percent by mass: | 10-16-2008 |
| 20080251161 | High Strength Cold Rolled Steel Sheet and Plated Steel Sheet Excellent in the Balance of Strength and Workability - A high-strength cold-rolled steel sheet exhibiting an excellent strength-workability balance, including in percent by mass: | 10-16-2008 |
| 20090238713 | ULTRAHIGH-STRENGTH STEEL SHEET - The invention relates to an ultrahigh-strength thin steel sheet excellent in the hydrogen embrittlement resistance, the steel sheet including, by weight %, 0.10 to 0.60% of C, 1.0 to 3.0% of Si, 1.0 to 3.5% of Mn, 0.15% or less of P, 0.02% or less of S, 1.5% or less of Al, 0.003 to 2.0% of Cr, and a balance including iron and inevitable impurities; in which grains of residual austenite have an average axis ratio (major axis/minor axis) of 5 or more, the grains of the residual austenite have an average minor axis length of 1 μm or less, and the grains of the residual austenite have a nearest-neighbor distance between the grains of 1 μm or less. | 09-24-2009 |
Hiroshi Akamizu, Kakogawa-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090145310 | PRESS FORMING METHOD OF FORMED MEMBER WITH FLANGE - The invention provides a press forming method which can prevent a stretch-flange crack while using conventional press forming equipment, at a time of press forming a formed member with flange. The method of the invention is characterized by a shape of a blank for press forming, and a blank in accordance with the invention is constructed by a base body blank portion corresponding to a flat base body of the formed member, and a concave flange blank portion formed by bending on a concave outer peripheral edge of the base body blank portion. The concave blank portion is constituted by a convex flange blank portion in which a stretch-flange deformation is generated, and an adjacent flange blank portion which is adjacent thereto. An outer peripheral edge of the convex flange blank portion is formed such that one end exists between c and e on a profile line corresponding to an outer peripheral edge of the adjacent flange blank portion, the other end exists between d and f, and the one end and the other end are smoothly connected between the straight lines cd and ef, as shown in FIG. | 06-11-2009 |
Takashi Akamizu, Kyoto JP
| Patent application number | Description | Published |
|---|---|---|
| 20090143284 | Promoter of Regeneration of Pancreatic B Cell, and Promoter of Insulin Production in Pancreatic B Cell - A pharmaceutical for promoting neogenesis or regeneration of pancreatic β cells which produces and secretes insulin and for promoting insulin production in β cells, comprising ghrelin or a derivative thereof as an effective component. | 06-04-2009 |