Patents Examined by Nicholas Wang
  • Patent number: 11371120
    Abstract: A high-temperature, high-strength, oxidation-resistant cobalt-nickel base alloy is disclosed. The alloy includes, in weight percent: about 3.5 to about 4.9% of Al, about 12.2 to about 16.0% of W, about 24.5 to about 32.0% Ni, about 6.5% to about 10.0% Cr, about 5.9% to about 11.0% Ta, and the balance Co and incidental impurities. A method of making an article having high-temperature strength, cyclic oxidation resistance and corrosion resistance is disclosed. The method includes forming a high-temperature, high-strength, oxidation-resistant cobalt-nickel base alloy as described herein; forming an article from the alloy; solution-treating the alloy by a solution heat treatment; and aging the alloy by providing at least one aging heat treatment at an aging temperature that is less than the gamma-prime solvus temperature, wherein the alloy is configured to form a continuous, protective, adherent oxide layer on an alloy surface upon exposure to a high-temperature oxidizing environment.
    Type: Grant
    Filed: March 10, 2019
    Date of Patent: June 28, 2022
    Assignee: General Electric Company
    Inventors: Akane Suzuki, Andrew John Elliott, Michael Francis Xavier Gigliotti, Jr., Kathleen Blanche Morey, Pazhayannur Subramanian
  • Patent number: 11326234
    Abstract: A cold-rolled steel sheet is provided that has a tensile strength of 980 MPa or more, and has a prescribed chemical composition. The microstructure is composed of, in area %, ferrite: 1 to 29%, retained austenite: 5 to 20%, martensite: less than 10%, pearlite: less than 5%, and the balance: bainite and/or tempered martensite. The total sum of the lengths of phase boundaries where ferrite comes in contact with martensite or retained austenite having a circle-equivalent radius of 1 ?m or more is 100 ?m or less per 1000 ?m2. The cold-rolled steel sheet is excellent in workability and low-temperature toughness, and in particular is excellent in low-temperature toughness after introduction of plastic strain.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 10, 2022
    Inventors: Takafumi Yokoyama, Riki Okamoto, Yuji Yamaguchi, Kazuki Shiokawa, Yuichi Nakahira, Hiroyuki Kawata
  • Patent number: 11319620
    Abstract: A martensitic steel alloy is provided. The martensitic steel alloy includes carbon from 0.22 to 0.36 wt. %, manganese from 0.5% to 2.0% wt. %, and chromium in an amount less than 0.10 wt. %. and a carbon equivalent Ceq of less than 0.44 in which Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. Ceq is the carbon equivalent, C, Mn, Cr, Mo, V, Ni, and Cu are in wt. % of the elements in the alloy. The alloy has an ultimate tensile strength of at least 1700 MPa.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: May 3, 2022
    Assignee: ArcelorMittal
    Inventors: Rongjie Song, Narayan S. Pottore
  • Patent number: 11319605
    Abstract: A heat treatment apparatus that thermally treats an annular workpiece formed of a steel material by inductively heating the workpiece includes a treatment tank in which the workpiece is set and thermally treated, a holding portion that holds the workpiece at a predetermined position, an induction heating coil that surrounds the workpiece to inductively heat the workpiece, and a cooling medium that cools surfaces of the workpiece during the induction heating of the workpiece.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: May 3, 2022
    Inventors: Wataru Yoshida, Towako Matsui, Katsuhiko Kizawa, Takashi Sada, Tsuyoshi Mikami
  • Patent number: 11299792
    Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention includes Ti at 0.0030 wt % or less (excluding 0 wt %), Nb at 0.0035 wt % or less (excluding 0 wt %), V at 0.0040 wt % or less (excluding 0 wt %), B at 0.0003 wt % to 0.0020 wt %, and the remaining portion including Fe and other inevitably added impurities, wherein a value of ([Ti]+0.8[Nb]+0.5[V])/(10*[B]) may be 0.17 to 7.8.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 12, 2022
    Assignee: POSCO
    Inventors: Jae-Hoon Kim, Jong Uk Ryu, Seung Il Kim, Sin Young Jung, Su Yong Sin, Sang Woo Lee
  • Patent number: 11289248
    Abstract: A magnetocaloric material comprising a La—Fe—Si based alloy composition that is compositionally modified to include a small but effective amount of at least one of Al, Ga, and In to improve mechanical stability of the alloy (substantially reduce alloy brittleness), improve thermal conductivity, and preserve comparable or provide improved magnetocaloric effects. The alloy composition may be further modified by inclusion of at least one of Co, Mn, Cr, and V as well as interstitial hydrogen.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: March 29, 2022
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Arjun K. Pathak, Yaroslav Mudryk, Oleksandr Dolotko, Vitalij K. Pecharsky
  • Patent number: 11268175
    Abstract: An aspect of the present invention relates to a high-strength steel, having excellent fracture initiation resistance and fracture propagation arrestability at low temperature.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 8, 2022
    Assignee: POSCO
    Inventors: Kyung-Keun Um, Woo-Gyeom Kim, Woo-Yeol Cha, Jin-Woo Chae
  • Patent number: 11253915
    Abstract: Disclosed are an apparatus and method for densifying or compacting powder material in the supply bin of an additive manufacture machine to improve the quality of the object being made. For example, a removable or portable apparatus can be applied to the surface of the supply bin once the bin has been filled. The apparatus can include a vibrational component that agitates the underlying powder to compact the material. The apparatus can then be removed during the remainder of the additive manufacturing process, which then follows in its normal course. A vacuum can also be used the remove of air or other gases that are emitted during the compaction process, for example, as voids are filled during densification.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: February 22, 2022
    Assignee: EOS GmbH Electro Optical Systems
    Inventors: Ankit Saharan, III, Erling Richard LaSalle
  • Patent number: 11241736
    Abstract: The present invention relates to a powder mixture for iron-based powder metallurgy which is obtained by mixing an iron-based powder and at least one kind of powders selected from the group consisting of a Ca—Al—Si-based composite oxide powder and a Ca—Mg—Si-based composite oxide powder, in which with a peak height of a main phase exhibiting the highest peak intensity by X-ray diffraction as 100, the composite oxide powder has a relative height of 40% or less, with respect to the main phase, of a peak height of a second phase having the second highest peak intensity.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: February 8, 2022
    Assignee: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventor: Nobuaki Akagi
  • Patent number: 11241741
    Abstract: For conditioning build material for fused filament fabrication, thermal power is both added to and removed from a nozzle in a manner that can reduce sensitivity of the nozzle temperature to fluctuations in build material feed rate. The amount of thermal power added is at least as large as the sum of the amount removed, the amount to condition the material, and losses to the environment. The amount removed may be at least as large as half the thermal power required to condition the material to extrusion temperature, and may be comparable to, or much larger than the conditioning amount. The larger the ratio of the amount removed to the conditioning amount, the less sensitive the nozzle temperature will be to fluctuations in build material feed rate. Fine temperature control arises, enabling building with metal-containing multi-phase materials or other materials that have a narrow working temperature range.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: February 8, 2022
    Assignee: Desktop Metal, Inc.
    Inventors: Emanuel Michael Sachs, Uwe Bauer, Jonah Samuel Myerberg, Nicholas Graham Bandiera
  • Patent number: 11236405
    Abstract: A steel plate for high-strength and high-toughness steel pipes has a chemical composition containing, by mass %, C: 0.03% or more and 0.08% or less, Si: more than 0.05% and 0.50% or less, Mn: 1.5% or more and 2.5% or less, P: 0.001% or more and 0.010% or less, S: 0.0030% or less, Al: 0.01% or more and 0.08% or less, Nb: 0.010% or more and 0.080% or less, Ti: 0.005% or more and 0.025% or less, and N: 0.001% or more and 0.006% or less, and further containing, by mass %, at least one selected from Cu: 0.01% or more and 1.00% or less, Ni: 0.01% or more and 1.00% or less, Cr: 0.01% or more and 1.00% or less, Mo: 0.01% or more and 1.00% or less, V: 0.01% or more and 0.10% or less, and B: 0.0005% or more and 0.0030% or less, with the balance being Fe and inevitable impurities. The steel plate has a microstructure in which an area fraction of ferrite at a ½ position of a thickness of the steel plate is 20% or more and 80% or less and deformed ferrite constitutes 50% or more and 100% or less of the ferrite.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: February 1, 2022
    Inventors: Hideyuki Kimura, Ryo Nagao, Nobuyuki Ishikawa, Kazukuni Hase
  • Patent number: 11230743
    Abstract: The present invention relates to a method for manufacturing a tubular product, characterized in that the tubular product is manufactured from steel comprising chromium in the range of 2.5 to 9.5 wt. % and silicon in an amount of more than 1.0 wt. %, and the method comprises the steps of austenitizing, quenching and tempering at a tempering temperature in the range of 300° C. to 550° C. Furthermore, the invention concerns a tubular product produced by this method.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: January 25, 2022
    Assignee: Benteler Steel/Tube GmbH
    Inventors: Michael Kaufmann, Marco Walterfang, Ralf Köster
  • Patent number: 11229979
    Abstract: A SnAgCuSb-based Pb-free solder alloy is disclosed. The disclosed solder alloy is particularly suitable for, but not limited to, producing solder joints, in the form of solder preforms, solder balls, solder powder, or solder paste (a mixture of solder powder and flux), for harsh environment electronics. An additive selected from 0.1-2.5 wt. % of Bi and/or 0.1-4.5 wt. % of In may be included in the solder alloy.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: January 25, 2022
    Inventors: Weiping Liu, Ning-Cheng Lee
  • Patent number: 11220732
    Abstract: Provided is a ferritic stainless steel sheet excellent in shape of weld zone and corrosion resistance of a weld zone with a material of a different kind formed by performing welding with austenitic stainless steel. A ferritic stainless steel sheet having a chemical composition containing, by mass %, C: 0.003% to 0.020%, Si: 0.01% to 1.00%, Mn: 0.01% to 0.50%, P: 0.040% or less, S: 0.010% or less, Cr: 20.0% to 24.0%, Cu: 0.20% to 0.80%, Ni: 0.01% to 0.60%, Al: 0.01% to 0.08%, N: 0.003% to 0.020%, Nb: 0.40% to 0.80%, Ti: 0.01% to 0.10%, Zr: 0.01% to 0.10%, and the balance being Fe and inevitable impurities, in which relational expression (1) below is satisfied: 3.0?Nb/(2Ti+Zr+0.5Si+5Al)?1.5??(1), here, in relational expression (1), each of the atomic symbols denotes the content (mass %) of the corresponding chemical element.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 11, 2022
    Inventors: Hidetaka Kawabe, Shuji Nishida, Mitsuyuki Fujisawa, Chikara Kami
  • Patent number: 11217359
    Abstract: A method for synthesizing a copper-silver alloy includes an ink preparation step, a coating step, a crystal nucleus formation step and a crystal nucleus synthesis step. In the ink preparation step, a copper salt particle, an amine-based solvent, and a silver salt particle are mixed, thereby preparing a copper-silver ink. In the coating step, a member to be coated is coated with the copper-silver ink. In the crystal nucleus formation step, at least one of a crystal nucleus of copper having a crystal grain diameter of 0.2 ?m or less and a crystal nucleus of silver having a crystal grain diameter of 0.2 ?m or less is formed from the copper-silver ink. In the crystal nucleus synthesis step, the crystal nucleus of copper and the crystal nucleus of silver are synthesized.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: January 4, 2022
    Inventors: Jinting Jiu, Minoru Ueshima, Katsuaki Suganuma, Wanli Li
  • Patent number: 11203793
    Abstract: A steel pipe for fuel injection pipe has a tensile strength of 500 to 900 MPa and a yield ratio of 0.50 to 0.85, and has a critical internal pressure (IP) satisfying [IP?0.41×TS×?] (?=[(D/d)2?1]/[0.776×(D/d)2], where TS: tensile strength (MPa) of the steel pipe, D: steel pipe outer diameter (mm), and d: steel pipe inner diameter (mm)), wherein a circumferential-direction residual stress on an inner surface of the pipe is ?20 MPa or lower after the steel pipe is split in half in a pipe axis direction.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: December 21, 2021
    Inventors: Tatsuya Masuda, Tsugumi Yamazaki, Hiroaki Kondo, Taizo Makino, Masahiro Yamazaki, Katsunori Nagao
  • Patent number: 11198926
    Abstract: In one aspect of the invention, an alloy includes a first element comprising magnesium (Mg), titanium (Ti), zirconium (Zr), chromium (Cr), or nickelaluminum (NiAl), a second element comprising lithium (Li), calcium (Ca), manganese (Mn), aluminum (Al), or a combination thereof, and a third element comprising zinc (Zn). According to the invention, nanoscale precipitates is produced in the magnesium alloy by additions of zinc and specific heat-treatment. These precipitates lower the energy for dislocation movements and increase the number of available slip systems in the magnesium alloy at room temperature and hence improve ductility and formability of the magnesium alloy.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: December 14, 2021
    Inventors: Morris E. Fine, Semyon Vaynman, Evan T. Hunt, Akio Urakami, Yip-Wah Chung, Johannes Weertman
  • Patent number: 11193193
    Abstract: A method of manufacturing a rolled wear-resistant aluminium alloy product including the steps of: (a) providing a rolling feedstock material of an aluminium alloy having Mg 4.20% to 5.5%, Mn 0.50% to 1.1%, Fe up to 0.40%, Si up to 0.30%, Cu up to 0.20%, Cr up to 0.25%, Zr up to 0.25%, Zn up to 0.30%, Ti up to 0.25%, unavoidable impurities and balance aluminium; (b) heating the rolling feedstock; (c) hot-rolling of the feedstock to an intermediate gauge in a range of 15 mm to 40 mm; (d) hot-rolling of the feedstock from intermediate gauge to a final gauge in a range of 3 mm to 15 mm and wherein the hot-mill exit temperature is in a range of 130-285° C.; (e) cooling of the hot-rolled feedstock to ambient temperature.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: December 7, 2021
    Assignee: Aleris Rolled Products Germany GmbH
    Inventors: Andreas Harald Bach, Bernd Jacoby, Achim Bürger
  • Patent number: 11185922
    Abstract: A manufacturing method for a three-dimensional structure includes forming unit layers using at least one of a first flowable composition including first powder and a second flowable composition including second powder and solidifying at least one of the first flowable composition including the first powder and the second flowable composition including the second powder in the unit layers. In the forming the unit layers, both of the first flowable composition and the second flowable composition are caused to be present in plane directions crossing a thickness direction of the unit layers.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: November 30, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Masaya Ishida, Toshimitsu Hirai, Eiji Okamoto
  • Patent number: 11186896
    Abstract: A process for selectively separating a metallic constituent from other metals and other materials accompanying the metallic constituent in a mixture is described. The process comprises the step of providing the mixture in an aqueous solution such that the metallic constituent forms a complex anion in the solution. One or more of the other metals forms a cation or a complex cation in the solution. Another step includes contacting the solution with one or more additives to form layered double hydroxide (LDH) material in situ such that the complex anion is intercalated within interlayers of the LDH material and wherein one or more of the other metals are incorporated into the LDH material's crystal structure or matrix. Another step involves the addition of an LDH to an aqueous solution.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: November 30, 2021
    Inventor: Grant Brian Douglas