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CPC
C21D8/10
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Parent Industries
C
CHEMISTRY METALLURGY
C21
Iron metallurgy
C21D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS
C21D8/00
Modifying the physical properties by deformation combined with, or followed by, heat treatment
Current Industry
C21D8/10
during manufacturing of tubular bodies
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Patents Grants
last 30 patents
Information
Patent Grant
Martensitic stainless seamless steel pipe
Patent number
11,970,759
Issue date
Apr 30, 2024
Nippon Steel Corporation
Kyohei Kanki
C21 - METALLURGY OF IRON
Information
Patent Grant
Lumen stent and preform thereof, and methods for preparing the lume...
Patent number
11,969,368
Issue date
Apr 30, 2024
Biotyx Medical (Shenzhen) Co., Ltd.
Deyuan Zhang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Martensitic stainless seamless steel pipe
Patent number
11,965,232
Issue date
Apr 23, 2024
Nippon Steel Corporation
Kyohei Kanki
C21 - METALLURGY OF IRON
Information
Patent Grant
Austenitic stainless steel having excellent pipe-expandability and...
Patent number
11,959,159
Issue date
Apr 16, 2024
POSCO Co., Ltd
Sang Seok Kim
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of forming and heat treating coiled tubing
Patent number
11,952,648
Issue date
Apr 9, 2024
Tenaris Coiled Tubes, LLC
Martin Valdez
C21 - METALLURGY OF IRON
Information
Patent Grant
Ferritic stainless steel and ferritic stainless steel pipe with imp...
Patent number
11,946,125
Issue date
Apr 2, 2024
POSCO Co., Ltd
Kye-Man Lee
C21 - METALLURGY OF IRON
Information
Patent Grant
Seamless steel pipe heat-treatment-finishing-treatment continuous f...
Patent number
11,898,216
Issue date
Feb 13, 2024
Nippon Steel Corporation
Hiroki Kamitani
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Steel material suitable for use in sour environment
Patent number
11,891,680
Issue date
Feb 6, 2024
Nippon Steel Corporation
Yohei Otome
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing a profiled component, and profiled component
Patent number
11,873,537
Issue date
Jan 16, 2024
Bayerische Motoren Werke Aktiengesellschaft
Thomas Hoesl
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for manufacturing cold-forged, extruded aluminum alloy tube
Patent number
11,872,616
Issue date
Jan 16, 2024
Jin Yuncheng Enterprise Co., Ltd.
Kun-Tzu Lin
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Cooling device for seamless steel pipes
Patent number
11,873,538
Issue date
Jan 16, 2024
SMS group GMBH
Torsten Müller
C21 - METALLURGY OF IRON
Information
Patent Grant
Aluminum alloy pipe and method of producing the same
Patent number
11,866,807
Issue date
Jan 9, 2024
UACJ Corporation; UACJ EXTRUSION CORPORATION
Taichi Suzuki
C21 - METALLURGY OF IRON
Information
Patent Grant
Shaped boron tubular structure support
Patent number
11,866,799
Issue date
Jan 9, 2024
L&W Engineering
Dean Richardson
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method of manufacturing a coiled tubing string
Patent number
11,833,561
Issue date
Dec 5, 2023
FORUM US, INC.
Raymond Rowland
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Martensitic stainless steel seamless pipe for oil country tubular g...
Patent number
11,827,949
Issue date
Nov 28, 2023
JFE Steel Corporation
Mami Endo
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus line for manufacturing seamless steel pipe and tube and m...
Patent number
11,821,051
Issue date
Nov 21, 2023
JFE Steel Corporation
Shunsuke Sasaki
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Austenitic alloy pipe and method for producing same
Patent number
11,807,910
Issue date
Nov 7, 2023
Nippon Steel Corporation
Masaki Ueyama
C21 - METALLURGY OF IRON
Information
Patent Grant
Steel pipe and method for producing steel pipe
Patent number
11,773,460
Issue date
Oct 3, 2023
Nippon Steel Corporation
Yuji Arai
C21 - METALLURGY OF IRON
Information
Patent Grant
Martensitic stainless steel seamless pipe for oil country tubular g...
Patent number
11,773,461
Issue date
Oct 3, 2023
JFE Steel Corporation
Mami Endo
C21 - METALLURGY OF IRON
Information
Patent Grant
High tensile and high toughness steels
Patent number
11,761,051
Issue date
Sep 19, 2023
Vallourec Deutschland GmbH
Mahrez Khouja
C21 - METALLURGY OF IRON
Information
Patent Grant
Multi-thickness welded vehicle structure
Patent number
11,761,052
Issue date
Sep 19, 2023
Multimatic Inc.
Mark Sullivan
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electric resistance welded steel pipe for torsion beam
Patent number
11,739,866
Issue date
Aug 29, 2023
Nippon Steel Corporation
Takaaki Fukushi
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for straightening of a FeCrAl alloy tube
Patent number
11,724,299
Issue date
Aug 15, 2023
Sandvik Intellectual Property AB
Fernando Rave
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method of manufacturing two tubes simultaneously and machine for us...
Patent number
11,697,143
Issue date
Jul 11, 2023
American Axle & Manufacturing, Inc.
John A. Pale
C21 - METALLURGY OF IRON
Information
Patent Grant
Lens alignment system and method
Patent number
11,681,115
Issue date
Jun 20, 2023
James Alan Monroe
C21 - METALLURGY OF IRON
Information
Patent Grant
Duplex stainless steel and method for producing same
Patent number
11,655,526
Issue date
May 23, 2023
JFE Steel Corporation
Kenichiro Eguchi
C21 - METALLURGY OF IRON
Information
Patent Grant
Steel pipe and method for producing steel pipe
Patent number
11,643,712
Issue date
May 9, 2023
Nippon Steel Corporation
Yuji Arai
C21 - METALLURGY OF IRON
Information
Patent Grant
Ferritic alloy and method of manufacturing nuclear fuel cladding tu...
Patent number
11,603,584
Issue date
Mar 14, 2023
Kepco Nuclear Fuel Co., Ltd.
Sung Yong Lee
C21 - METALLURGY OF IRON
Information
Patent Grant
Tube and a method of manufacturing a tube
Patent number
11,602,780
Issue date
Mar 14, 2023
Sandvik Intellectual Property AB
Krister Wickman
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Dual-phase stainless steel, and method of production thereof
Patent number
11,566,301
Issue date
Jan 31, 2023
JFE Steel Corporation
Yusuke Yoshimura
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
STEEL PIPE FOR HIGH-PRESSURE HYDROGEN, HIGH-PRESSURE HYDROGEN VESSE...
Publication number
20240150862
Publication date
May 9, 2024
JFE STEEL CORPORATION
Kazuki Matsubara
C21 - METALLURGY OF IRON
Information
Patent Application
HOT-STRETCH-REDUCED ELECTRIC RESISTANCE WELDED PIPE
Publication number
20240141451
Publication date
May 2, 2024
Nippon Steel Corporation
Kenzo TASHIMA
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
HIGH-STRENGTH AND HIGH-TOUGHNESS BAINITE GEOLOGICAL DRILLING PIPE A...
Publication number
20240133490
Publication date
Apr 25, 2024
Baoshan Iron & Steel Co., Ltd
Wen SUN
C21 - METALLURGY OF IRON
Information
Patent Application
HIGH-STRENGTH STAINLESS STEEL SEAMLESS PIPE FOR OIL COUNTRY TUBULAR...
Publication number
20240124949
Publication date
Apr 18, 2024
JFE STEEL CORPORATION
Kenichiro Eguchi
C21 - METALLURGY OF IRON
Information
Patent Application
STEEL COMPOSITION, WROUGHT ARTICLE AND MANUFACTURING METHOD OF A SE...
Publication number
20240093323
Publication date
Mar 21, 2024
DALMINE S.P.A.
PAOLO BORTOT
C21 - METALLURGY OF IRON
Information
Patent Application
High pressure tube and method of manufacturing the same
Publication number
20240093809
Publication date
Mar 21, 2024
ALLEIMA GMBH
Thomas FROBÖSE
C21 - METALLURGY OF IRON
Information
Patent Application
STEEL PIPE FOR PRESSURE PIPING AND STARTING MATERIAL FOR STEEL PIPE
Publication number
20240093324
Publication date
Mar 21, 2024
NIPPON STEEL CORPORATION
Taizo MAKINO
C21 - METALLURGY OF IRON
Information
Patent Application
400 MPa CORROSION-RESISTANT STEEL BAR AND PRODUCTION METHOD THEREOF
Publication number
20240068064
Publication date
Feb 29, 2024
INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD...
Han MA
C21 - METALLURGY OF IRON
Information
Patent Application
WIRE ROD FOR ULTRAHIGH-STRENGTH SPRINGS, STEEL WIRE, AND MANUFACTUR...
Publication number
20240052455
Publication date
Feb 15, 2024
POSCO Co., Ltd
Junmo LEE
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method for Manufacturing a Low-Carbon Nitrogen-Containing Austeniti...
Publication number
20240035110
Publication date
Feb 1, 2024
DAYE SPECIAL STEEL CO., LTD.
Xiaoliang DONG
C21 - METALLURGY OF IRON
Information
Patent Application
ELECTRIC RESISTANCE WELDED STEEL PIPE AND METHOD FOR MANUFACTURING...
Publication number
20240026999
Publication date
Jan 25, 2024
JFE STEEL CORPORATION
Akihide Matsumoto
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Thermal Processing Method for Niobium-Containing High-Alloy Austeni...
Publication number
20240002967
Publication date
Jan 4, 2024
Shanxi Taigang Stainless Steel Co., Ltd.
Xudong Fang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Austenitic Stainless Steel
Publication number
20230416889
Publication date
Dec 28, 2023
Outokumpu Oyj
Rui Wu
C21 - METALLURGY OF IRON
Information
Patent Application
Linepipe Steel With Enhanced Sulfide Stress Cracking Resistance
Publication number
20230392224
Publication date
Dec 7, 2023
ExxonMobil Technology and Engineering Company
Neeraj S. THIRUMALAI
C21 - METALLURGY OF IRON
Information
Patent Application
MARTENSITIC STAINLESS STEEL MATERIAL
Publication number
20230392241
Publication date
Dec 7, 2023
NIPPON STEEL CORPORATION
Daisuke MATSUO
C21 - METALLURGY OF IRON
Information
Patent Application
METHODS OF FORMING MAGNESIUM-BASED ALLOYS HAVING A BIMODAL MICROSTR...
Publication number
20230383385
Publication date
Nov 30, 2023
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Congjie WANG
C21 - METALLURGY OF IRON
Information
Patent Application
MARTENSITIC STAINLESS STEEL MATERIAL
Publication number
20230366071
Publication date
Nov 16, 2023
NIPPON STEEL CORPORATION
Toshiya NISHIMURA
C21 - METALLURGY OF IRON
Information
Patent Application
Method of Manufacturing High Strength Steel Tubing from a Steel Com...
Publication number
20230357876
Publication date
Nov 9, 2023
Tenaris Connections B.V.
Matteo Ortolani
C21 - METALLURGY OF IRON
Information
Patent Application
STAINLESS STEEL SEAMLESS PIPE AND METHOD FOR MANUFACTURING SAME
Publication number
20230340632
Publication date
Oct 26, 2023
JFE STEEL CORPORATION
Yuichi Kamo
C21 - METALLURGY OF IRON
Information
Patent Application
Method for Preparing Stainless Steel Seamless Tube with Ultra-High...
Publication number
20230304118
Publication date
Sep 28, 2023
Jiangsu Wujin Stainless Steel Pipe Group Co., Ltd.
Hong Gao
C21 - METALLURGY OF IRON
Information
Patent Application
Lens Alignment System and Method
Publication number
20230273394
Publication date
Aug 31, 2023
James Alan Monroe
C21 - METALLURGY OF IRON
Information
Patent Application
DUPLEX STAINLESS STEEL TUBE AND WELDED JOINT
Publication number
20230212724
Publication date
Jul 6, 2023
NIPPON STEEL CORPORATION
Hiroyuki HIRATA
C21 - METALLURGY OF IRON
Information
Patent Application
STEEL AND STEEL COMPONENT
Publication number
20230193414
Publication date
Jun 22, 2023
JFE STEEL CORPORATION
Naoya IHARA
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
TUBE AND A METHOD OF MANUFACTURING A TUBE
Publication number
20230182187
Publication date
Jun 15, 2023
Sandvik Intellectual Property AB
Krister WICKMAN
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
ALLOY PIPE AND METHOD FOR PRODUCING SAME
Publication number
20230183829
Publication date
Jun 15, 2023
JFE STEEL CORPORATION
Shunsuke Sasaki
C21 - METALLURGY OF IRON
Information
Patent Application
MULTI-THICKNESS WELDED VEHICLE STRUCTURE
Publication number
20230183831
Publication date
Jun 15, 2023
MULTIMATIC INC.
Mark Sullivan
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
S32750 Austenitic Ferrite Super Duplex Stainless Steel Seamless Pip...
Publication number
20230167520
Publication date
Jun 1, 2023
Jiangsu Wujin Stainless Steel Pipe Group Co., Ltd.
Hong Gao
C21 - METALLURGY OF IRON
Information
Patent Application
HIGH-NITROGEN NICKEL-FREE AUSTENITIC STAINLESS STEEL SEAMLESS THIN-...
Publication number
20230166010
Publication date
Jun 1, 2023
ZHONG KE YI AN MEDICAL TECHNOLOGY (BEIJING) CO., LTD
Wen LI
C21 - METALLURGY OF IRON
Information
Patent Application
STAINLESS STEEL SEAMLESS PIPE AND METHOD FOR MANUFACTURING STAINLES...
Publication number
20230137295
Publication date
May 4, 2023
JFE STEEL CORPORATION
Yuichi Kamo
C21 - METALLURGY OF IRON
Information
Patent Application
SLIDING ELEMENT, IN PARTICULAR PISTON RING, AND METHOD FOR PRODUCIN...
Publication number
20230134881
Publication date
May 4, 2023
FEDERAL-MOGUL BURSCHEID GMBH
JOHANNES ESSER
C21 - METALLURGY OF IRON