Patent application number | Description | Published |
20090065106 | Ultra soft high carbon hot-rolled steel sheets and manufacturing method thereof - The present invention provides an ultra soft high carbon hot-rolled steel sheet. The ultra soft high carbon hot-rolled steel sheet contains 0.2% to 0.7% of C, 0.01% to 1.0% of Si, 0.1% to 1.0% of Mn, 0.03% or less of P, 0.035% or less of S, 0.08% or less of Al, 0.01% or less of N, and the balance being Fe and incidental impurities and further contains 0.0010% to 0.0050% of B and 0.05% to 0.30% of Cr in some cases. In the texture of the steel sheet, an average ferrite grain diameter is 20 μm or more, a volume ratio of ferrite grains having a grain diameter of 10 μm or more is 80% or more, and an average carbide grain diameter is in the range of 0.10 to less than 2.0 μm. In addition, the steel sheet is manufactured by the steps, after rough rolling, performing finish rolling at a reduction ratio of 10% or more and at a finish temperature of (Ar | 03-12-2009 |
20090100767 | AUDIO-VISUAL SYSTEM - There is a need for being able to excellently audiovisually receive contents without disordering a room atmosphere. An audiovisual room | 04-23-2009 |
20090173415 | Steel Sheet Excellent In Fine Blanking Performance and Manufacturing Method of the Same - A steel sheet excellent in FB performance-and also excellent in fabrication performance after FB working and a manufacturing method of the same are provided. The steel sheet is a steel sheet having a composition containing from 0.1 to 0.5% of C, not more than 0.5% of Si and from 0.2 to 1.5% of Mn in terms of % by mass, with P and S being adjusted at proper ranges, and having a structure in which a ferrite has an average grain size of from 1 to 10 μm, cementite has a spheroidization ratio of 80% or more, and of the cementite, an amount S | 07-09-2009 |
20090205756 | HOT-ROLLED THIN STEEL SHEET WITH EXCELLENT FORMABILITY AND EXCELLENT STRENGTH AND TOUGHNESS AFTER HEAT TREATMENT, AND METHOD FOR MANUFACTURING THE SAME - Provided is a hot-rolled thin steel sheet having a thickness of less than 6 mm and having high strength showing a tensile strength of 440 MPa or more, excellent formability, and excellent strength and toughness after heat treatment and a method of manufacturing the same. A steel base material containing 0.10 to 0.20% of C, and Si, Mn, Al, P, S, and N adjusted to suitable amount ranges, and 0.01 to 0. 15% of Ti and 0.0005 to 0.0050% of B is hot rolled so as to have a finishing temperature of finish rolling of 820 to 880° C.; after the completion of the rolling, the hot-rolled thin steel sheet is cooled to a surface temperature range of 550 to 650° C. at a surface cooling rate of 15 to 50° C./s; and the hot-rolled thin steel sheet is coiled at the temperature range. | 08-20-2009 |
20090308504 | STEEL SHEET EXCELLENT IN FINE BLANKING PERFORMANCE AND MANUFACTURING METHOD OF THE SAME - A steel sheet excellent in FB performance and also excellent in fabrication performance after FB working and a manufacturing method of the same are provided. The steel sheet is a steel sheet having a composition containing from 0.1 to 0.5% of C, not more than 0.5% of Si and from 0.2 to 1.5% of Mn in terms of % by mass, with P and S being adjusted at proper ranges and having a structure having a ferrite having an average grain size of more than 10 μm and less than 20 μm and a cementite present in the ferrite grain having an average particle size of from 0.3 to 1.5 μm. In this way, the steel sheet becomes a steel sheet excellent in FB performance, mold life and performance (side bend elongation) after FB working. | 12-17-2009 |
20110008832 | METHODS FOR STABLY RETAINING FOREIGN GENES IN CELLS - A method for preparing a protein or peptide encoded by a foreign gene by expressing a foreign gene, which comprises the steps of: preparing a recombinant vector comprising in an expressible state a gene encoding an aminoacyl-tRNA synthetase, in which a desired foreign gene has been inserted in an expressible state; preparing a mutant host cell or the like in which a chromosomal gene encoding an aminoacyl-tRNA synthetase has been knocked out; transforming the mutant host cell with the recombinant vector to obtain a transformant; and culturing the transformant to prepare the protein or peptide encoded by the foreign gene. It becomes possible to provide a novel means for permitting the retention of a recombinant DNA cloning vector without employing an antibiotic and without limiting the composition of the medium; and a method for preparing a protein or peptide encoded by a foreign gene by using the means. | 01-13-2011 |
20120313946 | DISPLAY SWITCHING APPARATUS, DISPLAY SWITCHING METHOD, AND DISPLAY SWITCHING PROGRAM - Provided is a display switching apparatus including an operation unit used to instruct a display unit to switch a display of a display image having a background image, and a control unit that, when instructed to switch the display of the display image via the operation unit, exercises control so that the display of the display image on the display unit is switched to the display image having the background image in a visible state indicating whether the display is switchable. | 12-13-2012 |
20130084621 | PLASMID VECTOR - The object is to provide a technique for modifying a bacterium belonging to the genus | 04-04-2013 |