Patents by Inventor Hyun-Woo Jin
Hyun-Woo Jin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230374636Abstract: The present invention relates to ferrous alloys with high strength, cost-effective corrosion resistance and cracking resistance for refinery service environments, such as amine service under sweet or sour environments. More specifically, the present invention pertains to a type of ferrous manganese alloyed steels for high strength and cracking resistance and methods of making and using the same for applications including, but not limited to, amine units used in oil and gas production, petroleum refining, and chemical production.Type: ApplicationFiled: August 4, 2021Publication date: November 23, 2023Applicant: ExxonMobil Technology and Engineering CompanyInventors: Hyun-Woo Jin, Weiji Huang
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Publication number: 20230374635Abstract: The present invention relates to ferrous alloys with high strength, cost-effective corrosion resistance and cracking resistance for refinery service environments, such as amine service under sweet or sour environments. More specifically, the present invention pertains to a type of ferrous manganese alloyed steels for high strength and cracking resistance and methods of making and using the same.Type: ApplicationFiled: August 4, 2021Publication date: November 23, 2023Applicant: ExxonMobil Technology and Engineering CompanyInventors: Hyun-Woo Jin, Ning Ma, Shiun Ling, Hyun Jo Jun
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Patent number: 11717889Abstract: Methods disclosed herein include using additive manufacturing to create a joint between a first metallic material and a second metallic material that is different from the first metallic material, wherein the porosity of the joint is less than about 0.1 percent by volume measured according to ASTM B-962. The additive manufacturing can be performed such that no intermetallic brittle phase forms between the first metallic material and the second metallic material.Type: GrantFiled: January 10, 2020Date of Patent: August 8, 2023Assignee: Exxon Mobil Technology and Engineering CompanyInventors: Ning Ma, Hyun-Woo Jin, Shiun Ling
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Publication number: 20230129758Abstract: A method of manufacturing a semiconductor memory device includes alternately stacking sacrificial layers and interlayer insulating layers over a lower structure, forming a slit passing through the sacrificial layers and the interlayer insulating layers, removing the sacrificial layers through the slit through a wet etching process, and removing, through a dry etching process, a byproduct that is produced at ends of the interlayer insulating layers during the wet etching process.Type: ApplicationFiled: March 3, 2022Publication date: April 27, 2023Applicant: SK hynix Inc.Inventors: Seung Cheol LEE, Dae Min KIM, Dae Sung KIM, Sang Seob LEE, Hyun Woo JIN
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Patent number: 10947610Abstract: Mooring chains used in offshore environments are typically formed from carbon steels due to their wear and fatigue resistance properties. Although carbon steels may exhibit robust mechanical properties, they are susceptible to corrosion, which can shorten the usable working lifetime of mooring chains, particularly in a seawater environment. Austenitic steels comprising high percentages of manganese may have comparable mechanical properties to the carbon steels commonly used in mooring chains, yet exhibit less susceptibility to corrosion. Austenitic steels suitable for use in mooring chains and other structures in contact with or exposed to a seawater environment may comprise: 0.4-0.8 wt. % C, 12-25 wt. % Mn, 4-15 wt. % Cr, a non-zero amount of Si<3 wt. %, a non-zero amount of Al<0.5 wt. %, a non-zero amount of N<0.1 wt. %, <5 wt. % Mo, and balance Fe and inevitable impurities.Type: GrantFiled: August 15, 2019Date of Patent: March 16, 2021Assignee: ExxonMobil Upstream Research CompanyInventors: Neerav Verma, Andrew J. Wasson, Hyun-Woo Jin, Haiping He
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Publication number: 20200230697Abstract: Methods disclosed herein include using additive manufacturing to create a joint between a first metallic material and a second metallic material that is different from the first metallic material, wherein the porosity of the joint is less than about 0.1 percent by volume measured according to ASTM B-962. The additive manufacturing can be performed such that no intermetallic brittle phase forms between the first metallic material and the second metallic material.Type: ApplicationFiled: January 10, 2020Publication date: July 23, 2020Inventors: Ning Ma, Hyun-Woo Jin, Shiun Ling
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Publication number: 20200230746Abstract: The present disclosure relates to reactive manufacturing methods to disperse fine second phase particles within a matrix, and compositions made thereof. Specifically, the reactive manufacturing methods are based on in-situ reaction synthesis during an additive manufacturing (AM) process to fabricate composite components for structural and/or functional applications. The composite components can be particularly useful in oil and gas applications.Type: ApplicationFiled: January 10, 2020Publication date: July 23, 2020Inventors: Hyun-Woo Jin, Ning MA
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Publication number: 20200063245Abstract: Mooring chains used in offshore environments are typically formed from carbon steels due to their wear and fatigue resistance properties. Although carbon steels may exhibit robust mechanical properties, they are susceptible to corrosion, which can shorten the usable working lifetime of mooring chains, particularly in a seawater environment. Austenitic steels comprising high percentages of manganese may have comparable mechanical properties to the carbon steels commonly used in mooring chains, yet exhibit less susceptibility to corrosion. Austenitic steels suitable for use in mooring chains and other structures in contact with or exposed to a seawater environment may comprise: 0.4-0.8 wt. % C, 12-25 wt. % Mn, 4-15 wt. % Cr, a non-zero amount of Si<3 wt. %, a non-zero amount of Al<0.5 wt. %, a non-zero amount of N<0.1 wt. %, <5 wt. % Mo, and balance Fe and inevitable impurities.Type: ApplicationFiled: August 15, 2019Publication date: February 27, 2020Inventors: Neerav Verma, Andrew J. Wasson, Hyun-Woo Jin, Haiping He
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Publication number: 20180169799Abstract: Weld metals and methods for welding ferritic steels are provided. The weld metals have high strength and high ductile tearing resistance and are suitable for use in strain based pipelines. The weld metals are comprised of between 0.03 and 0.08 wt % carbon, between 2.0 and 3.5 wt % nickel, not greater than about 2.0 wt % manganese, not greater than about 0.80 wt % molybdenum, not greater than about 0.70 wt % silicon, not greater than about 0.03 wt % aluminum, not greater than 0.02 wt % titanium, not greater than 0.04 wt % zirconium, between 100 and 225 ppm oxygen, not greater than about 100 ppm nitrogen, not greater than about 100 ppm sulfur, not greater than about 100 ppm phosphorus, and the balance essentially iron. The weld metals are applied using a power source with pulsed current waveform control with <5% CO2 and <2% oxygen in the shielding gas.Type: ApplicationFiled: January 30, 2018Publication date: June 21, 2018Inventors: Douglas P. Fairchild, Mario L. Macia, Nathan E. Nissley, Raghavan Ayer, Hyun-Woo Jin, Adnan Ozekcin
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Patent number: 9896748Abstract: A steel composition and method from making a dual phase steel therefrom. The dual phase steel may have carbon of about 0.05% by weight to about 0.12 wt %; niobium of about 0.005 wt % to about 0.03 wt %; titanium of about 0.005 wt % to about 0.02 wt %; nitrogen of about 0.001 wt % to about 0.01 wt %; silicon of about 0.01 wt % to about 0.5 wt %; manganese of about 0.5 wt % to about 2.0 wt %; and a total of molybdenum, chromium, vanadium and copper less than about 0.15 wt %. The steel may have a first phase consisting of ferrite and a second phase having one or more of carbide, pearlite, martensite, lower bainite, granular bainite, upper bainite, and degenerate upper bainite. A solute carbon content in the first phase may be about 0.01 wt % or less.Type: GrantFiled: January 30, 2012Date of Patent: February 20, 2018Assignee: Exxon Mobil Upstream Research CompanyInventors: Jayoung Koo, Narasimha-Rao V. Bangaru, Swarupa Soma Bangaru, Hyun-Woo Jin, Adnan Ozekcin, Raghavan Ayer, Douglas P. Fairchild, Danny L. Beeson, Douglas S. Hoyt, James B. LeBleu, Jr., Shigeru Endo, Mitsuhiro Okatsu, Shinichi Kakihara, Moriyasu Nagae
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Publication number: 20170349983Abstract: Improved steel compositions and methods of making the same are provided. More particularly, the present disclosure provides high manganese (Mn) steel having enhanced strength and/or performance at cryogenic temperatures, and methods for fabricating high manganese steel compositions having enhanced strength and/or performance at cryogenic temperatures. The advantageous steel compositions/components of the present disclosure improve one or more of the following properties: strength, toughness, elastic modulus, thermal expansion coefficient and/or thermal conductivity. In general, the present disclosure provides high manganese steels tailored to resist wear and/or deformation at cryogenic temperatures.Type: ApplicationFiled: May 9, 2017Publication date: December 7, 2017Inventors: Hyun-Woo JIN, Cary N. MARZINSKY, Douglas P. FAIRCHILD
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Patent number: 9821401Abstract: Weld metals and methods for welding ferritic steels are provided. The weld metals have high strength and high ductile tearing resistance and are suitable for use in strain based pipelines. The weld metal contains retained austenite and has a cellular microstructure with cell walls containing lath martensite and cell interiors containing degenerate upper bainite. The weld metals are comprised of between 0.02 and 0.12 wt % carbon, between 7.50 and 14.50 wt % nickel, not greater than about 1.00 wt % manganese, not greater than about 0.30 wt % silicon, not greater than about 150 ppm oxygen, not greater than about 100 ppm sulfur, not greater than about 75 ppm phosphorus, and the balance essentially iron. Other elements may be added to enhance the properties of the weld metal. The weld metals are applied using a power source with current waveform control which produces a smooth, controlled welding arc and weld pool in the absence of CO2 or oxygen in the shielding gas.Type: GrantFiled: December 12, 2011Date of Patent: November 21, 2017Assignee: ExxonMobil Upstream Research CompanyInventors: Douglas P. Fairchild, Mario L. Macia, Steven J. Ford, Nathan E. Nissley, Raghavan Ayer, Hyun-Woo Jin, Adnan Ozekcin
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Publication number: 20170088910Abstract: Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous corrosion and/or cracking resistant steel. More particularly, the present disclosure provides high manganese (Mn) steel compositions having enhanced corrosion and/or cracking resistance, and methods for fabricating high manganese steel compositions having enhanced corrosion and/or cracking resistance. Methods for fabricating high manganese steel compositions (e.g., via passivation) having enhanced corrosion and/or cracking resistance are also provided.Type: ApplicationFiled: September 29, 2015Publication date: March 30, 2017Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Hyun Woo Jin, Shiun Ling, Ning Ma
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Publication number: 20150129559Abstract: Weld metals and methods for welding ferritic steels are provided. The weld metals have high strength and high ductile tearing resistance and are suitable for use in strain based pipelines. The weld metals are comprised of between 0.03 and 0.08 wt % carbon, between 2.0 and 3.5 wt % nickel, not greater than about 2.0 wt % manganese, not greater than about 0.80 wt % molybdenum, not greater than about 0.70 wt % silicon, not greater than about 0.03 wt % aluminum, not greater than 0.02 wt % titanium, not greater than 0.04 wt % zirconium, between 100 and 225 ppm oxygen, not greater than about 100 ppm nitrogen, not greater than about 100 ppm sulfur, not greater than about 100 ppm phosphorus, and the balance essentially iron. The weld metals are applied using a power source with pulsed current waveform control with <5% CO2 and <2% oxygen in the shielding gas.Type: ApplicationFiled: June 24, 2013Publication date: May 14, 2015Inventors: Douglas P. Fairchild, Mario L. Macia, Nathan E. Nissley, Raghavan Ayer, Hyun-Woo Jin, Adnan Ozekcin
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Patent number: 8637166Abstract: Provided are strain hardened high strength nickel based alloy welds that yield improved properties and performance in joining high strength metals. The advantageous weldments include two or more segments of ferrous or non-ferrous components, and fusion welds, friction stir welds, electron beam welds, laser beam welds, or a combination thereof bonding adjacent segments of the components together, wherein the welds comprise a strain hardened nickel based alloy weld metal composition including greater than or equal to 10 wt % Mo based on the total weight of the nickel based alloy weld metal composition. Also provided are methods for forming the welds from the nickel based alloy weld compositions. The strain hardened high strength nickel based alloy welds are useful in the oil, gas and petrochemical industry in applications for natural gas transportation and storage, oil and gas well completion and production, and oil and gas refinery and chemical plants.Type: GrantFiled: December 16, 2008Date of Patent: January 28, 2014Assignee: Exxonmobil Research and Engineering CompanyInventors: Raghavan Ayer, Neeraj Srinivas Thirumalai, Hyun-Woo Jin, Daniel B. Lillig, Douglas Paul Fairchild, Steven Jeffrey Ford
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Patent number: 8602113Abstract: Provided are coated oil and gas well production devices and methods of making and using such coated devices. In one form, the coated device includes one or more cylindrical bodies, hardbanding on at least a portion of the exposed outer surface, exposed inner surface, or a combination of both exposed outer or inner surface of the one or more cylindrical bodies, and a coating on at least a portion of the inner surface, the outer surface, or a combination thereof of the one or more cylindrical bodies. The coating includes one or more ultra-low friction layers, and one or more buttering layers interposed between the hardbanding and the ultra-low friction coating. The coated oil and gas well production devices may provide for reduced friction, wear, erosion, corrosion, and deposits for well construction, completion and production of oil and gas.Type: GrantFiled: March 30, 2011Date of Patent: December 10, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Hyun Woo Jin, Srinivasan Rajagopalan, Adnan Ozekcin, Tabassumul Haque, Mehmet Deniz Ertas, Bo Zhao, Jeffrey Roberts Bailey, Terris Field Walker
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Patent number: 8590627Abstract: Provided are coated sleeved oil and gas well production devices and methods of making and using such coated sleeved devices. In one form, the coated sleeved oil and gas well production device includes one or more cylindrical bodies, one or more sleeves proximal to the outer diameter or inner diameter of the one or more cylindrical bodies, hardbanding on at least a portion of the exposed outer surface, exposed inner surface, or a combination of both exposed outer or inner surface of the one or more sleeves, and a coating on at least a portion of the inner sleeve surface, the outer sleeve surface, or a combination thereof of the one or more sleeves. The coating includes one or more ultra-low friction layers, and one or more buttering layers interposed between the hardbanding and the ultra-low friction coating. The coated sleeved oil and gas well production devices may provide for reduced friction, wear, erosion, corrosion, and deposits for well construction, completion and production of oil and gas.Type: GrantFiled: February 22, 2011Date of Patent: November 26, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Hyun Woo Jin, Srinivasan Rajagopalan, Adnan Ozekcin, Tabassumul Haque, Mehmet Deniz Ertas, Bo Zhao, Jeffrey Roberts Bailey, Terris Field Walker
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Publication number: 20130292362Abstract: Weld metals and methods for welding ferritic steels are provided. The weld metals have high strength and high ductile tearing resistance and are suitable for use in strain based pipelines. The weld metal contains retained austenite and has a cellular microstructure with cell walls containing lath martensite and cell interiors containing degenerate upper bainite. The weld metals are comprised of between 0.02 and 0.12 wt % carbon, between 7.50 and 14.50 wt % nickel, not greater than about 1.00 wt % manganese, not greater than about 0.30 wt % silicon, not greater than about 150 ppm oxygen, not greater than about 100 ppm sulfur, not greater than about 75 ppm phosphorus, and the balance essentially iron. Other elements may be added to enhance the properties of the weld metal. The weld metals are applied using a power source with current waveform control which produces a smooth, controlled welding arc and weld pool in the absence of CO2 or oxygen in the shielding gas.Type: ApplicationFiled: December 12, 2011Publication date: November 7, 2013Inventors: Douglas P. Fairchild, Mario L. Macia, Steven J. Ford, Nathan E. Nissley, Raghavan Ayer, Hyun-Woo Jin, Adnan Ozekcin
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Patent number: 8561707Abstract: Provided are drill stem assemblies with ultra-low friction coatings for subterraneous drilling operations. In one form, the coated drill stem assemblies for subterraneous rotary drilling operations include a body assembly with an exposed outer surface including a drill string coupled to a bottom hole assembly, a coiled tubing coupled to a bottom hole assembly, or a casing string coupled to a bottom hole assembly and an ultra-low friction coating on at least a portion of the exposed outer surface of the body assembly, hardbanding on at least a portion of the exposed outer surface of the body assembly, an ultra-low friction coating on at least a portion of the hardbanding, wherein the ultra-low friction coating comprises one or more ultra-low friction layers, and one or more buttering layers interposed between the hardbanding and the ultra-low friction coating.Type: GrantFiled: March 8, 2011Date of Patent: October 22, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Hyun Woo Jin, Srinivasan Rajagopalan, Adnan Ozekcin, Tabassumul Haque, Mehmet Deniz Ertas, Bo Zhao, Jeffrey Roberts Bailey, Terris Field Walker
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Patent number: 8426033Abstract: Provided are precipitation hardened high strength nickel based alloy welds that yield improved properties and performance in joining high strength metals. The advantageous weldments include two or more segments of ferrous or non-ferrous components, and fusion welds, friction stir welds, electron beam welds, laser beam welds, or a combination thereof bonding adjacent segments of the components together, wherein the welds comprise a precipitation hardened nickel based alloy weld metal composition including greater than or equal to 1.4 wt % of combined aluminum and titanium based on the total weight of the nickel based alloy weld metal composition. Also provided are methods for forming the welds from the nickel based alloy weld compositions, wherein the precipitation hardening occurs in the as-welded condition. The nickel based welds do not require a separate heat treatment step after welding to produce advantageous strength properties.Type: GrantFiled: December 16, 2008Date of Patent: April 23, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Raghavan Ayer, Neeraj Srinivas Thirumalai, Hyun-Woo Jin, Daniel B. Lillig, Douglas Paul Fairchild, Steven Jeffrey Ford