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1. 发明授权

US09017494B2 Method for producing seamless steel pipe for oil wells excellent in sulfide stress cracking resistance 有权
标题翻译：生产耐硫化物应力开裂性优良油井无缝钢管的方法
公开(公告)号：US09017494B2
公开(公告)日：2015-04-28
申请号：US13212400
申请日：2011-08-18
申请人： Yuji Arai , Tomohiko Omura , Keiichi Nakamura
发明人： Yuji Arai , Tomohiko Omura , Keiichi Nakamura
IPC分类号： C21D9/08 , C21D8/10 , C21D1/18 , C22C38/02 , C22C38/04 , C22C38/22
CPC分类号： C21D8/105 , C21D1/18 , C21D8/10 , C21D9/08 , C21D9/085 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/22
摘要： A high-strength seamless steel pipe for oil wells excellent in sulfide stress cracking resistance which comprises, on the percent by mass basis, C: 0.1 to 0.20%, Si: 0.05 to 1.0%, Mn: 0.05 to 1.0%, Cr: 0.05 to 1.5%, Mo: 0.05 to 1.0%, Al: 0.10% or less, Ti: 0.002 to 0.05% and B: 0.0003 to 0.005%, with a value of equation “C+(Mn/6)+(Cr/5)+(Mo/3)” of 0.43 or more, with the balance being Fe and impurities, and in the impurities P: 0.025% or less, S: 0.010% or less and N: 0.007% or less. The seamless steel pipe may contain a specified amount of one or more element(s) of V and Nb, and/or a specified amount of one or more element(s) of Ca, Mg and REM. The seamless steel pipe can be produced at a low cost by adapting an in-line tube making and heat treatment process having a high production efficiency since a reheating treatment for refinement of grains is not required.
摘要翻译： C：0.1〜0.20％，Si：0.05〜1.0％，Mn：0.05〜1.0％，Cr：0.05以下的耐硫化物应力开裂性优异的油井用高强度无缝钢管至1.5％，Mo：0.05〜1.0％，Al：0.10％以下，Ti：0.002〜0.05％，B：0.0003〜0.005％，C +（Mn / 6）+（Cr / 5） +（Mo / 3）“为0.43以上，余量为Fe和杂质，杂质P：0.025％以下，S：0.010％以下，N：0.007％以下。无缝钢管可以含有规定量的一种或多种V和Nb元素，和/或规定量的一种或多种Ca，Mg和REM元素。通过适应不需要再精加工处理的再加热处理，可以通过适应生产效率高的在线制管和热处理工艺，以低成本制造无缝钢管。

2. 发明授权

US08361256B2 Method for producing seamless steel pipe 有权
标题翻译：无缝钢管生产方法
公开(公告)号：US08361256B2
公开(公告)日：2013-01-29
申请号：US12010433
申请日：2008-01-24
申请人： Yuji Arai , Keiichi Nakamura
发明人： Yuji Arai , Keiichi Nakamura
IPC分类号： C21D9/08 , C22C38/00 , C22C38/22
CPC分类号： C22C38/02 , C21D8/105 , C21D9/08 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/32
摘要： A seamless steel pipe produced by heating a steel billet, which has a chemical composition C: 0.15 to 0.20%, Si: not less than 0.01% to less than 0.15%, Mn: 0.05 to 1.0%, Cr: 0.05 to 1.5%, Mo: 0.05 to 1.0%, Al≦0.10%, V: 0.01 to 0.2%, Ti: 0.002 to 0.03%, B: 0.0003 to 0.005% and N: 0.002 to 0.01%, further optionally one or more of Ca, Mg and REM in a specific amount, under the provision that the conditions “C+(Mn/6)+(Cr/5)+(Mo/3)≧0.43” and “Ti×N
摘要翻译：通过将化学组成C：0.15〜0.20％，Si：0.01〜0.15％，Mn：0.05〜1.0％，Cr：0.05〜1.5％的钢坯加热而制造的无缝钢管， Mo：0.05〜1.0％，Al≤1.0％，0.10％，V：0.01〜0.2％，Ti：0.002〜0.03％，B：0.0003〜0.005％，N：0.002〜0.01％ REM满足条件C +（Mn / 6）+（Cr / 5）+（Mo / 3）≥0.43，Ti×N <0.0002〜0.0006×Si的条件，其余为Fe 和杂质，其中杂质中的P <0.01; 0.025％，S＆NlE; 0.010％和Nb <0.005％，至1000〜1250℃的温度，随后在最终轧制温度900〜1050℃下进行制管轧制，然后从不低于Ar3相变点的温度直接淬火所得到的钢管，然后在600℃至Ac1相变点的温度范围内回火，或者在所述制管轧制之后代替上述在从Ac3相变点到1000℃的温度范围内串联加热所得到的钢管，然后从不低于Ar 3相变点的温度淬火，然后在600℃的温度范围内回火。到Ac1转化点，具有高强度和优异的韧性，同时具有高产率，并且具有优异的耐SSC性。

3. 发明申请

US20060266448A1 Seamless steel pipe for oil wells excellent in sulfide stress cracking resistance and method for producing the same 审中-公开
标题翻译：耐硫化应力开裂性优良的油井用无缝钢管及其制造方法
公开(公告)号：US20060266448A1
公开(公告)日：2006-11-30
申请号：US11494608
申请日：2006-07-28
申请人： Yuji Arai , Tomohiko Omura , Keiichi Nakamura
发明人： Yuji Arai , Tomohiko Omura , Keiichi Nakamura
IPC分类号： C21D9/08 , C22C38/32
CPC分类号： C21D8/105 , C21D1/18 , C21D8/10 , C21D9/08 , C21D9/085 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/22
摘要： A high-strength seamless steel pipe for oil wells excellent in sulfide stress cracking resistance which comprises, on the percent by mass basis, C: 0.1 to 0.20%, Si: 0.05 to 1.0%, Mn: 0.05 to 1.0%, Cr: 0.05 to 1.5%, Mo: 0.05 to 1.0%, Al: 0.10% or less, Ti: 0.002 to 0.05% and B: 0.0003 to 0.005%, with a value of equation “C+(Mn/6)+(Cr/5)+(Mo/3)” of 0.43 or more, with the balance being Fe and impurities, and in the impurities P: 0.025% or less, S: 0.010% or less and N: 0.007% or less. The seamless steel pipe may contain a specified amount of one or more element(s) of V and Nb, and/or a specified amount of one or more element(s) of Ca, Mg and REM. The seamless steel pipe can be produced at a low cost by adapting an in-line tube making and heat treatment process having a high production efficiency since a reheating treatment for refinement of grains is not required.
摘要翻译： C：0.1〜0.20％，Si：0.05〜1.0％，Mn：0.05〜1.0％，Cr：0.05以下的耐硫化物应力开裂性优异的油井用高强度无缝钢管至1.5％，Mo：0.05〜1.0％，Al：0.10％以下，Ti：0.002〜0.05％，B：0.0003〜0.005％，C +（Mn / 6）+（Cr / 5） +（Mo / 3）“为0.43以上，余量为Fe和杂质，杂质P：0.025％以下，S：0.010％以下，N：0.007％以下。无缝钢管可以含有规定量的一种或多种V和Nb元素，和/或规定量的一种或多种Ca，Mg和REM元素。通过适应不需要再精加工处理的再加热处理，可以通过适应生产效率高的在线制管和热处理工艺，以低成本制造无缝钢管。

4. 发明申请

US20110297279A1 METHOD FOR PRODUCING SEAMLESS STEEL PIPE FOR OIL WELLS EXCELLENT IN SULFIDE STRESS CRACKING RESISTANCE 有权
标题翻译：用于生产无硫钢管的无缝钢管的方法
公开(公告)号：US20110297279A1
公开(公告)日：2011-12-08
申请号：US13212400
申请日：2011-08-18
申请人： Yuji Arai , Tomohiko Omura , Keiichi Nakamura
发明人： Yuji Arai , Tomohiko Omura , Keiichi Nakamura
IPC分类号： C21D9/08 , C21D6/00 , C21D11/00
CPC分类号： C21D8/105 , C21D1/18 , C21D8/10 , C21D9/08 , C21D9/085 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/22
摘要： A high-strength seamless steel pipe for oil wells excellent in sulfide stress cracking resistance which comprises, on the percent by mass basis, C: 0.1 to 0.20%, Si: 0.05 to 1.0%, Mn: 0.05 to 1.0%, Cr: 0.05 to 1.5%, Mo: 0.05 to 1.0%, Al: 0.10% or less, Ti: 0.002 to 0.05% and B: 0.0003 to 0.005%, with a value of equation “C+(Mn/6)+(Cr/5)+(Mo/3)” of 0.43 or more, with the balance being Fe and impurities, and in the impurities P: 0.025% or less, S: 0.010% or less and N: 0.007% or less. The seamless steel pipe may contain a specified amount of one or more element(s) of V and Nb, and/or a specified amount of one or more element(s) of Ca, Mg and REM. The seamless steel pipe can be produced at a low cost by adapting an in-line tube making and heat treatment process having a high production efficiency since a reheating treatment for refinement of grains is not required.
摘要翻译： C：0.1〜0.20％，Si：0.05〜1.0％，Mn：0.05〜1.0％，Cr：0.05以下的耐硫化物应力开裂性优异的油井用高强度无缝钢管至1.5％，Mo：0.05〜1.0％，Al：0.10％以下，Ti：0.002〜0.05％，B：0.0003〜0.005％，C +（Mn / 6）+（Cr / 5） +（Mo / 3）“为0.43以上，余量为Fe和杂质，杂质P：0.025％以下，S：0.010％以下，N：0.007％以下。无缝钢管可以含有规定量的一种或多种V和Nb元素，和/或规定量的一种或多种Ca，Mg和REM元素。通过适应不需要再精加工处理的再加热处理，可以通过适应生产效率高的在线制管和热处理工艺，以低成本制造无缝钢管。

5. 发明申请

US20080121318A1 Method for producing seamless steel pipe 有权
标题翻译：无缝钢管生产方法
公开(公告)号：US20080121318A1
公开(公告)日：2008-05-29
申请号：US12010433
申请日：2008-01-24
申请人： Yuji Arai , Keiichi Nakamura
发明人： Yuji Arai , Keiichi Nakamura
IPC分类号： C21D9/08
CPC分类号： C22C38/02 , C21D8/105 , C21D9/08 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/32
摘要： A seamless steel pipe produced by heating a steel billet, which has a chemical composition C: 0.15 to 0.20%, Si: not less than 0.01% to less than 0.15%, Mn: 0.05 to 1.0%, Cr: 0.05 to 1.5%, Mo: 0.05 to 1.0%, Al≦0.10%, V: 0.01 to 0.2%, Ti: 0.002 to 0.03%, B: 0.0003 to 0.005% and N: 0.002 to 0.01%, further optionally one or more of Ca, Mg and REM in a specific amount, under the provision that the conditions “C+(Mn/6)+(Cr/5)+(Mo/3)≧0.43” and “Ti×N
摘要翻译：通过将化学组成C：0.15〜0.20％，Si：0.01〜0.15％，Mn：0.05〜1.0％，Cr：0.05〜1.5％的钢坯加热而制造的无缝钢管， Mo：0.05〜1.0％，Al≤0.10％，V：0.01〜0.2％，Ti：0.002〜0.03％，B：0.0003〜0.005％，N：0.002〜0.01％，进一步可选地，和REM的量，根据条件“C +（Mn / 6）+（Cr / 5）+（Mo / 3）> = 0.43”和“TixN <0.0002-0.0006xSi” 余量为Fe和杂质，其中杂质中P <= 0.025％，S <= 0.010％，Nb <0.005％，温度为1000〜1250℃，随后在最终轧制温度900〜 1050℃，然后直接从不低于Ar 3 3相变点的温度淬火所得到的钢管，随后在600℃至Ac 1的温度范围内进行回火转换点，或代替上述制管轧制之后，c 在从3℃相变点到1000℃的温度范围内对所得到的钢管进行互补加热，然后从不低于Ar 3的温度淬火， SUB>相变点，然后在600℃到Ac 1相变点的温度范围内回火，具有高强度和优异的韧性，同时具有高的屈服比，并且在 SSC电阻也。

6. 发明授权

US09719617B2 Threaded joint for steel pipes 有权
公开(公告)号：US09719617B2
公开(公告)日：2017-08-01
申请号：US13088460
申请日：2011-04-18
申请人： Takashi Okada , Keiichi Nakamura , Masaaki Sugino , Suguru Yamaguchi
发明人： Takashi Okada , Keiichi Nakamura , Masaaki Sugino , Suguru Yamaguchi
IPC分类号： F16L15/00 , E21B17/042
CPC分类号： F16L15/004 , E21B17/042
摘要： In a threaded joint for steel pipes comprising a pin (1) and a box (2), each having a threaded portion (11 or 21), a sealing surface (13 or 23), and a shoulder surface (14, 15 or 24, 25), the sealing surface (13) of the pin (1) is formed by a tapered surface, and the sealing surface (23) of the box (2) is formed by a first curved surface portion with a large radius of curvature in the range of 15-120 mm, a tapered surface portion, and a second curved surface portion with a large radius of curvature again in the range of 15-120 mm.

7. 发明授权

US09605781B2 Threaded connection comprising at least one threaded element with an end lip for a metal tube 有权
公开(公告)号：US09605781B2
公开(公告)日：2017-03-28
申请号：US12741054
申请日：2008-11-03
申请人： Sylvain Beigneux , Daly Daly , Bertrand Maillon , Claire Patureau , Eric Verger , Michihiko Iwamoto , Keiichi Nakamura , Masaaki Sugino , Suguru Yamaguchi
发明人： Sylvain Beigneux , Daly Daly , Bertrand Maillon , Claire Patureau , Eric Verger , Michihiko Iwamoto , Keiichi Nakamura , Masaaki Sugino , Suguru Yamaguchi
IPC分类号： F16L15/00 , E21B17/042
CPC分类号： F16L15/004 , E21B17/042 , Y10T29/49826 , Y10T82/10 , Y10T408/03 , Y10T409/303752
摘要： A threaded tubular connection includes a female threaded portion at a first tubular component end and a male threaded portion at a second tubular component end, the female threaded portion including a female thread, at least one female sealing surface on its inner peripheral surface, and at least one female axial abutment surface, the male threaded portion including a male thread, at least one male sealing surface on its outer peripheral surface, at least one axial abutment surface, and a lip disposed between the sealing surface and an axial abutment surface located at a free end of the threaded portion distant from the thread, the male thread being made up into the female thread such that at least one male axial abutment surface is in contact with at least one female axial abutment surface, at least one male sealing surface being in interference contact with at least one corresponding female sealing surface, the portion of the lip between the sealing surface and the axial abutment surface being radially distant from a corresponding surface of the other threaded portion, at least one leak channel being provided in one of the threaded portions to place the chamber formed between the lip and the corresponding surface of the other threaded portion in communication with the interior of the connection.

8. 发明授权

US08995064B2 Zoom lens, imaging apparatus, and method for manufacturing zoom lens 有权
标题翻译：变焦镜头，成像设备和制造变焦镜头的方法
公开(公告)号：US08995064B2
公开(公告)日：2015-03-31
申请号：US13589156
申请日：2012-08-19
申请人： Keiichi Nakamura
发明人： Keiichi Nakamura
IPC分类号： G02B15/14 , G02B15/173 , G02B27/64
CPC分类号： G02B15/173 , G02B15/14 , G02B27/646
摘要： Disclosed is a zoom lens having a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group G3 having positive refractive power; and a fourth lens group G4 having positive refractive power. Upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2 is changed, a distance between the second lens group G2 and the third lens group G3 is changed, and the fourth lens group G4 is moved toward the object first, then moved toward an image. The third lens group G3 has a first positive lens L31, a negative lens L32 and a second positive lens L33, and the fourth lens group G4 has two lenses: L41 and L42.
摘要翻译：公开了具有正屈光力的第一透镜组G1的变焦透镜; 具有负屈光力的第二透镜组G2; 具有正屈光力的第三透镜组G3; 以及具有正屈光力的第四透镜组G4。当从广角端状态变焦到望远端状态时，第一透镜组G1与第二透镜组G2之间的距离发生变化，第二透镜组G2与第三透镜组G3之间的距离发生变化，第四透镜组G4首先朝向物体移动，然后向图像移动。第三透镜组G3具有第一正透镜L31，负透镜L32和第二正透镜L33，第四透镜组G4具有两个透镜：L41和L42。

9. 发明授权

US08481892B2 Ceramic heater and method for producing same 有权
标题翻译：陶瓷加热器及其制造方法
公开(公告)号：US08481892B2
公开(公告)日：2013-07-09
申请号：US12732449
申请日：2010-03-26
申请人： Keiichi Nakamura , Kazuhiro Nobori
发明人： Keiichi Nakamura , Kazuhiro Nobori
IPC分类号： F23Q7/00 , F23Q7/22
CPC分类号： F23Q7/22 , H05B3/143 , Y10T29/49083
摘要： A method for producing a ceramic heater includes performing firing at 1,600° C. to 1,750° C. in a state in which front and back surfaces of an inner shaped body composed of low-temperature sinterable raw material powder containing aluminum nitride powder as a main component and 0.03% to 1% by weight of rare earth oxide powder are sandwiched between a pair of outer layers composed of aluminum nitride sintered bodies having a volume resistivity of 1015 Ωcm or more through resistive heating elements composed of metal meshes, thereby obtaining a ceramic heater.
摘要翻译：一种陶瓷加热器的制造方法，其特征在于，在以含有氮化铝粉末为主体的低温可烧结原料粉末构成的内周面的正面和背面的状态下，在1600℃〜1750℃下进行烧成 0.03％〜1％（重量）的稀土类氧化物粉末，通过由金属网构成的电阻加热元件夹在体积电阻率为1015Ω·m以上的氮化铝烧结体的一对外层之间，得到陶瓷加热器。

10. 发明授权

US08438926B2 Method of evaluating fastening state of threaded joint of pipes or tubes, method for fastening threaded joint of pipes or tubes, and apparatus for evaluating fastening state of threaded joint of pipes or tubes 有权
标题翻译：评估管道螺纹接头的紧固状态的方法，管道或管子的螺纹接头的方法以及用于评估管道或管道的螺纹接头的紧固状态的装置
公开(公告)号：US08438926B2
公开(公告)日：2013-05-14
申请号：US13239610
申请日：2011-09-22
申请人： Ikuji Hoshino , Masaki Yamano , Makoto Sakamoto , Keiichi Nakamura , Jun Masubuchi , Kenta Sakai
发明人： Ikuji Hoshino , Masaki Yamano , Makoto Sakamoto , Keiichi Nakamura , Jun Masubuchi , Kenta Sakai
IPC分类号： G01N29/24 , G01N29/07 , G01N29/09
CPC分类号： G01N29/11 , F16L15/004 , F16L2201/10 , G01N2291/02827 , G01N2291/0423 , G01N2291/044 , G01N2291/2636 , G01N2291/2691
摘要： The present invention provides a method which allows simply, easily and accurately evaluating the fastening state of shoulder parts of a threaded joint for use as a joint of pipes or tubes, such as OCTG, during fastening or after fastening. The fastening state evaluation method for a threaded joint 100 of pipes or tubes according to the present invention is characterized in that it transmits ultrasonic surface waves from the internal surface of either one of the pin 1 and the box 2 toward the internal surface of the other one of the pin 1 and the box 2 through the shoulder parts 13, 23 of the pin 1 and the box 2, and on the basis of the transmitted wave intensity or the reflected wave intensity thereof, determines whether or not the fastening state of the threaded joint 100 is satisfactory.
摘要翻译：本发明提供了一种方法，其可以简单，容易且准确地评估在紧固期间或紧固之后用作管道或管（如OCTG）的接头的螺纹接头的肩部的紧固状态。根据本发明的管或螺纹接头100的紧固状态评估方法的特征在于，其从销1和盒2中的任一个的内表面向另一个的内表面传输超声表面波通过销1和盒子2的肩部13,23的销1和盒2中的一个，并且基于透射波强度或其反射波强度，确定是否将紧固状态螺纹接头100是令人满意的。

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