| Patent | Date |
|---|
Low-alloy high-strength seamless steel pipe for oil country tubular goods
Grant 11,453,924 - Okatsu , et al. September 27, 2 | 2022-09-27 |
Low-alloy high-strength seamless steel pipe for oil country tubular goods
Grant 11,414,733 - Okatsu , et al. August 16, 2 | 2022-08-16 |
High-strength seamless steel pipe for oil country tubular goods, and method for producing the same
Grant 11,313,007 - Yuga , et al. April 26, 2 | 2022-04-26 |
High-strength seamless steel pipe for oil country tubular goods, and production method for high-strength seamless steel pipe for oil country tubular goods
Grant 11,186,885 - Yuga , et al. November 30, 2 | 2021-11-30 |
Low-alloy High-strength Seamless Steel Pipe For Oil Country Tubular Goods
App 20210363620 - Okatsu; Mitsuhiro ; et al. | 2021-11-25 |
Low alloy high strength seamless steel pipe for oil country tubular goods
Grant 11,111,566 - Okatsu , et al. September 7, 2 | 2021-09-07 |
Low alloy high strength thick-walled seamless steel pipe for oil country tubular goods
Grant 10,975,450 - Okatsu , et al. April 13, 2 | 2021-04-13 |
Low-alloy High-strength Seamless Steel Pipe For Oil Country Tubular Goods
App 20210071275 - Okatsu; Mitsuhiro ; et al. | 2021-03-11 |
High-strength seamless steel pipe for oil country tubular goods and method of producing the same
Grant 10,920,297 - Yuga , et al. February 16, 2 | 2021-02-16 |
High-strength seamless steel pipe for oil country tubular goods and method of producing the same
Grant 10,876,182 - Yuga , et al. December 29, 2 | 2020-12-29 |
High-strength seamless steel pipe for oil country tubular goods and method of producing the same
Grant 10,844,453 - Yuga , et al. November 24, 2 | 2020-11-24 |
Low-alloy High-strength Seamless Steel Pipe For Oil Country Tubular Goods
App 20200325553 - Okatsu; Mitsuhiro ; et al. | 2020-10-15 |
High-strength seamless steel pipe for oil country tubular goods and method of producing the same
Grant 10,640,856 - Yuga , et al. | 2020-05-05 |
High-strength seamless steel pipe for oil country tubular goods and method of producing the same
Grant 10,472,690 - Yuga , et al. Nov | 2019-11-12 |
High-strength Seamless Steel Pipe For Oil Country Tubular Goods, And Method For Producing The Same
App 20190226039 - Yuga; Masao ; et al. | 2019-07-25 |
Low Alloy High Strength Thick-walled Seamless Steel Pipe For Oil Country Tubular Goods
App 20190055617 - Okatsu; Mitsuhiro ; et al. | 2019-02-21 |
Low Alloy High Strength Seamless Steel Pipe For Oil Country Tubular Goods
App 20190048443 - Okatsu; Mitsuhiro ; et al. | 2019-02-14 |
Low Alloy High Strength Seamless Steel Pipe For Oil Country Tubular Goods
App 20190048444 - Okatsu; Mitsuhiro ; et al. | 2019-02-14 |
High-strength Seamless Steel Pipe For Oil Country Tubular Goods, And Production Method For High-strength Seamless Steel Pipe For Oil Country Tubular Goods
App 20190024201 - Yuga; Masao ; et al. | 2019-01-24 |
High-strength Seamless Steel Pipe For Oil Country Tubular Goods And Method Of Producing The Same
App 20180327881 - YUGA; Masao ; et al. | 2018-11-15 |
Round bar tensile test specimen for sulfide stress corrosion cracking test of a steel, test method for sulfide stress corrosion cracking of steel, and seamless steel pipe having excellent resistance to sulfide stress corrosion cracking
Grant 9,995,669 - Yuga , et al. June 12, 2 | 2018-06-12 |
Low yield ratio dual phase steel linepipe with superior strain aging resistance
Grant 9,896,748 - Koo , et al. February 20, 2 | 2018-02-20 |
High-strength Seamless Steel Pipe For Oil Country Tubular Goods And Method Of Producing The Same (as Amended)
App 20170349964 - Yuga; Masao ; et al. | 2017-12-07 |
High-strength Seamless Steel Pipe For Oil Country Tubular Goods And Method Of Producing The Same (as Amendmed)
App 20170349963 - Yuga; Masao ; et al. | 2017-12-07 |
High-strength Seamless Steel Pipe For Oil Country Tubular Goods And Method Of Producing The Same
App 20170283918 - Yuga; Masao ; et al. | 2017-10-05 |
High-strength Seamless Steel Pipe For Oil Country Tubular Goods And Method Of Producing The Same (as Amended)
App 20170275715 - Yuga; Masao ; et al. | 2017-09-28 |
Test Method For Sulfide Stress Corrosion Cracking Of Steel And Seamless Steel Pipe Having Excellent Resistance To Sulfide Stress Corrosion Cracking
App 20170167968 - YUGA; Masao ; et al. | 2017-06-15 |
Abrasion Resistant Welded Steel Pipe And Method Of Producing The Same
App 20150007904 - Tanizawa; Akihiko ; et al. | 2015-01-08 |
Welded Steel Pipe With Excellent Welded Heat-affected Zone Toughness And Process For Producing Same
App 20140227549 - Tanizawa; Akihiko ; et al. | 2014-08-14 |
High strength steel pipe for low-temperature usage having excellent buckling resistance and toughness of welded heat affected zone and method for producing the same
Grant 8,765,269 - Shimamura , et al. July 1, 2 | 2014-07-01 |
High-strength steel plate, method of producing the same, and high-strength steel pipe
Grant 8,758,528 - Shimamura , et al. June 24, 2 | 2014-06-24 |
Low Yield Ratio Dual Phase Steel Linepipe With Superior Strain Aging Resistance
App 20120125490 - Koo; Jayoung ; et al. | 2012-05-24 |
High-strength welded steel pipe including weld metal having high cold-cracking resistance and method for manufacturing the same
Grant 8,124,247 - Hayakawa , et al. February 28, 2 | 2012-02-28 |
High Strength Steel Pipe For Low-temperature Usage Having Excellent Buckling Resistance And Toughness Of Welded Heat Affected Zone And Method For Producing The Same
App 20120018028 - Shimamura; Junji ; et al. | 2012-01-26 |
High-strength Welded Steel Pipe Including Weld Metal Having High Cold-cracking Resistance And Method For Manufacturing The Same
App 20100119861 - Hayakawa; Naoya ; et al. | 2010-05-13 |
Low Yield Ratio Dual Phase Steel Linepipe with Superior Strain Aging Resistance
App 20090301613 - Koo; Jayoung ; et al. | 2009-12-10 |
High-Strength Steel Plate, Method of Producing the Same, and High-Strength Steel Pipe
App 20090120541 - Shimamura; Junji ; et al. | 2009-05-14 |
Method of manufacturing thick steel product of high strength and high toughness having excellent weldability and minimal variation of structure and physical properties
Grant 5,989,366 - Hayashi , et al. November 23, 1 | 1999-11-23 |
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