Patents Examined by Katherine A Christy
  • Patent number: 11401593
    Abstract: The invention relates to a maraging steel containing C: 0.02% (mass %, hereinafter the same) or less, Si: 0.3% or less, Mn: 0.3% or less, Ni: 7.0 to 15.0%, Cr: 5.0% or less, Co: 8.0 to 12.0%, Mo: 0.1 to 2.0%, Ti: 1.0 to 3.0%, and Sol.Al: 0.01 to 0.2%, where the balance includes Fe and unavoidable impurities of P: 0.01% or less, S: 0.01% or less, N: 0.01% or less, and O: 0.01% or less. The parent phase of the maraging steel includes a martensitic phase. The parent phase contains a martensitic phase obtained by reverse transformation from a martensitic phase to an austenitic phase and then transformation from the austenitic phase, in an area fraction of 25% to 75%.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: August 2, 2022
    Assignee: Kobe Steel, Ltd.
    Inventors: Zhuyao Chen, Takeo Miyamura, Shigenobu Namba
  • Patent number: 11390932
    Abstract: A high-strength hot-dip galvanized steel sheet has a hot-dip galvanized layer on a surface of the steel sheet, a specific component composition, and a steel microstructure containing, on an area percentage basis, 0% to 15% of ferrite and upper bainite in total, 80% to 100% of lower bainite and martensite in total, and 0% to 10% of retained austenite, and containing precipitates having a particle size of 100 to 2,000 nm in an amount of 109 to 1012 particles/m2 in a region extending to a position 100 to 300 ?m from the surface layer of the steel sheet, in which the ratio of the average amount of C at a position 5 ?m from the surface layer of the steel sheet to the average amount of C at a position 70 ?m from the surface layer of the steel sheet in the thickness direction is 0.20 to 0.80.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: July 19, 2022
    Assignee: JFE STEEL CORPORATION
    Inventors: Hiroshi Hasegawa, Tatsuya Nakagaito
  • Patent number: 11393612
    Abstract: A grain-oriented electrical steel sheet according to the present embodiment is a grain-oriented electrical steel sheet having a groove formed on a surface, in which, in a cross section of the grain-oriented electrical steel sheet orthogonal to the groove, a KAM value is 0.1 or more and 3.0 or less in a region on a central side in a thickness direction of the grain-oriented electrical steel sheet with respect to the groove, the region being surrounded by a square having one side in contact with a groove bottom of the groove and having a length of 50 ?m in each side.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: July 19, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hideyuki Hamamura, Satoshi Arai, Takashi Kataoka, Shunsuke Okumura
  • Patent number: 11384416
    Abstract: This nickel-containing steel for low temperature includes, as a chemical composition, by mass %: C: 0.020% to 0.070%; Si: 0.03% to 0.30%; Mn: 0.20% to 0.80%; Ni: 12.5% to 17.4%; Al: 0.010% to 0.060%; N: 0.0015% to 0.0060%; and O: 0.0007% to 0.0030%, in which a metallographic structure contains 2.0% to 30.0% of an austenite phase by volume fraction %, in a thickness middle portion of a section parallel to a rolling direction and a thickness direction, an average grain size of prior austenite grains is 3.0 ?m to 20.0 ?m, and an average aspect ratio of the prior austenite grains is 1.0 to 2.9.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: July 12, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Manabu Hoshino, Tetsuya Namegawa, Shinichi Omiya, Takayuki Kagaya
  • Patent number: 11387024
    Abstract: An R—T—B based rare earth sintered magnet in which R is a rare earth sintered magnet, T is an iron group element, and B is boron. R includes one or more selected from Nd and Pr. The R—T—B based rare earth sintered magnet includes M and C in which M is one ore more selected from Zr, Ti, and Nb. The R—T—B based rare earth sintered magnet includes main phase grains and grain boundaries, and the grain boundaries includes a coexisting part in which a M—C compound, a M—B compound, and a 6-13-1 phase coexist. The R—T—B based rare earth sintered magnet attains improved HcJ while maintaining good Br and Hk/HcJ.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: July 12, 2022
    Assignee: TDK CORPORATION
    Inventors: Hiroki Kawamura, Makoto Iwasaki
  • Patent number: 11371127
    Abstract: A nickel-containing steel for low temperature according to an aspect of the present invention has a chemical composition within a predetermined range, in which a metallographic structure of a thickness middle portion contains 2.0 vol % to 20.0 vol % of an austenite phase, an average grain size of prior austenite grains is 3.0 ?m to 15.0 ?m, an average aspect ratio of the prior austenite grains is 1.0 to 2.4, a plate thickness is 4.5 mm to 30 mm, the chemical composition and the average grain size of the prior austenite grains are further limited depending on the plate thickness, a yield stress at room temperature is 460 MPa to 710 MPa, and a tensile strength at the room temperature is 560 MPa to 810 MPa.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: June 28, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Tetsuya Namegawa, Manabu Hoshino, Shinichi Omiya, Takayuki Kagaya
  • Patent number: 11371132
    Abstract: The present invention has as its technical problem the provision of a part excellent in contact fatigue strength or wear resistance in addition to the rotating bending fatigue strength. In the present invention, the contents of the constituents of the steel, in particular C, Mn, Cr, V, and Mo, are adjusted in accordance with the targeted properties and nitrided parts are prepared while controlling the nitriding potential.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 28, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takahide Umehara, Masato Yuya
  • Patent number: 11371126
    Abstract: This nickel-containing steel for low temperature includes, as a chemical composition, by mass %: C: 0.030% to 0.070%; Si: 0.03% to 0.30%; Mn: 0.10% to 0.80%; Ni: 12.5% to 17.4%; Mo: 0.03% to 0.60%; Al: 0.010% to 0.060%; N: 0.0015% to 0.0060%; and O: 0.0007% to 0.0030%, in which a metallographic structure contains 2.0% to 30.0% of an austenite phase by volume fraction %, in a thickness middle portion of a section parallel to a rolling direction and a thickness direction, an average grain size of prior austenite grains is 3.0 ?m to 20.0 ?m, and an average aspect ratio of the prior austenite grains is 3.1 to 10.0.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: June 28, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Tetsuya Namegawa, Manabu Hoshino, Shinichi Omiya, Takayuki Kagaya
  • Patent number: 11371121
    Abstract: A Ni steel has a chemical composition within a predetermined range, in which a metallographic structure of a thickness middle portion contains 2.0 vol % to 20.0 vol % of an austenite phase, an average grain size of prior austenite grains is 3.0 ?m to 12.0 ?m, an average aspect ratio of the prior austenite grains is 2.6 to 10.0, a plate thickness is 4.5 mm to 20 mm, a yield stress at room temperature is 590 MPa to 710 MPa, and a tensile strength at the room temperature is 690 MPa to 810 MPa, when the plate thickness is more than 16 mm, the Ni steel contains Ni: 11.5% or more, and when the plate thickness is 16 mm or less and the Ni steel contains Ni: less than 11.5%, the average grain size of the prior austenite grains is 6.0 ?m or less.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: June 28, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Tetsuya Namegawa, Manabu Hoshino, Shinichi Omiya, Takayuki Kagaya
  • Patent number: 11371129
    Abstract: A hot-dip galvanized steel sheet includes a plated layer formed on at least a part of a surface of a steel sheet, the plated layer containing: Al in a range from 10 mass % to 40 mass %; Si in a range from 0.05 mass % to 4 mass %; Mg in a range from 0.5 mass % to 4 mass %; and the balance consisting of Zn and inevitable impurities. The plated layer has a lamellar structure in which a layered Zn phase and a layered Al phase are alternately arranged in a cross section of the plated layer, the lamellar structure accounting for 5% or more by an area fraction in the cross section, and a total abundance ratio of an intermetallic compound containing at least one of Fe, Mn, Ti, Sn, In, Bi, Pb or B is regulated to 3% or less by the area fraction.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: June 28, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventor: Takuya Mitsunobu
  • Patent number: 11371125
    Abstract: A wear-resistant steel having excellent hardness and impact toughness and a method for producing same can include: 0.29-0.37 wt % of carbon, 0.1-0.7 wt % of silicon, 0.6-1.6 wt % of manganese, 0.05 wt % or less of phosphorus, 0.02 wt % or less of sulfur, 0.07 wt % or less of aluminum, 0.1-1.5 wt % of chromium, 0.01-0.8 wt % of molybdenum, 0.01-0.08 wt % of vanadium, 50 ppm or less of boron, and 0.02 wt % or less of cobalt; and optionally one or more of 0.5 wt % or less of nickel, 0.5 wt % or less of copper, 0.02 wt % or less of titanium, 0.05 wt % or less of niobium, and 2-100 ppm of calcium; with the remainder of Fe and other inevitable impurities.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: June 28, 2022
    Assignee: POSCO
    Inventors: Seng-Ho Yu, Young-Jin Jung, Yong-Woo Kim
  • Patent number: 11365476
    Abstract: The present disclosure generally relate to thin films incorporating high aspect ratio feature definitions and methods for forming the same. As gate height increases, 3D NAND gate stacks are subject to higher aspect ratio etching. Due to the current limitations of etching techniques, the vertical etch profile typically tapers as the depth into the gate stack increases. The inventors have devised a unique deposition scheme that compensates for etch performance degradation in deep trenches by a novel plasma-enhanced chemical vapor deposition (PECVD) film deposition method. The inventors have found that by grading various properties (e.g., refractive index, stress of the film, dopant concentration in the film) of the as-deposited films (e.g., silicon nitride) a more uniform etch profile can be achieved by compensating for variations in both dry and wet etch rates.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: June 21, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Praket P. Jha, Allen Ko, Xinhai Han, Thomas Jongwan Kwon, Bok Hoen Kim, Byung Ho Kil, Ryeun Kim, Sang Hyuk Kim
  • Patent number: 11338610
    Abstract: A example ribbon decoration device includes a base structure having a first end, a second end, and a body. At least one end fastener attaches the first end of the base structure to the second end of the base structure for positioning the base structure around a portion of the tree, pole, fixture, window, doorway, or other object. A plurality of decorative ribbons are configurable between a rolled configuration for storage and an unrolled configuration for decorating. Ribbon fasteners are configured to attach a corresponding one of the plurality of decorative ribbons to the body of the base structure. The base structure is positioned on a tree, pole, fixture, window, doorway, or other object with decorative ribbons in the rolled configuration on the base structure, and the decorative ribbons are changed to the unrolled configuration for decorating the tree, pole, fixture, window, doorway, arch, or other object.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: May 24, 2022
    Assignee: ZEZ SOLUTION, INC.
    Inventor: Saba Kragt
  • Patent number: 11338954
    Abstract: An aluminum can wherein, when the light reflected by the outer surface of the body portion of the aluminum can is evaluated based on the LCH method by using a multi-angle spectral colorimeter, the aluminum can features a ratio C15h/C15w of 0.6 to 1.4, the ratio C15h/C15w being that of a saturation value C15h of the light reflected at 15 degrees in the direction of height and a saturation value C15w of the light reflected at an angle 15 of degrees in the circumferential direction based on the light regularly reflected from the light that is incident at 45 degrees in the direction of height and in the circumferential direction.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: May 24, 2022
    Assignees: TOYO SEIKAN CO., LTD., TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Norihisa Hirota, Ryozo Shiroishi, Takuho Kumagai, Kenichi Takao
  • Patent number: 11339461
    Abstract: A austenitic stainless steel which has a chemical composition consisting of, by mass %, C: 0.04 to 0.12%, Si: 0.25 to 0.55%, Mn: 0.7 to 2.0%, P: 0.035% or less, S: 0.0015% or less, Cu: 0.02 to 0.80%, Co: 0.02 to 0.80%, Ni: 10.0 to 14.0%, Cr: 15.5 to 17.5%, Mo: 1.5 to 2.5%, N: 0.01 to 0.10%, Al: 0.030% or less, O: 0.020% or less, Sn: 0 to 0.01%, Sb: 0 to 0.01%, As: 0 to 0.01%, Bi: 0 to 0.01%, V: 0 to 0.10%, Nb: 0 to 0.10%, Ti: 0 to 0.10%, W: 0 to 0.50%, B: 0 to 0.005%, Ca: 0 to 0.010%, Mg: 0 to 0.010% and REM: 0 to 0.10%, with the balance being Fe and impurities, and satisfying [18.0?Cr+Mo+1.5×Si?20.0] and [14.5?Ni+30×(C+N)+0.5×(Mn+Cu+Co)?19.5].
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: May 24, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki Hirata, Katsuki Tanaka, Kana Jotoku
  • Patent number: 11338370
    Abstract: A cutting tool includes a base material, and a coating film covering the base material in contact with the base material. The base material is a cubic boron nitride sintered material. The coating film is a ceramic. An amount of oxygen in the coating film is less than or equal to 0.040 mass percent.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 24, 2022
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.
    Inventors: Katsumi Okamura, Satoru Kukino, Makoto Setoyama
  • Patent number: 11339462
    Abstract: A austenitic stainless steel weld metal which has a chemical composition consisting of, by mass %, C: 0.01 to 0.10%, Si: 0.20 to 0.70%, Mn: 0.8 to 2.5%, P: 0.035% or less, S: 0.0030% or less, Cu: 0.01 to 0.60%, Co: 0.01 to 1.00%, Ni: 8.0 to 12.0%, Cr: 14.5 to 17.5%, Mo: 1.0 to 2.2%, N: 0.02 to 0.10%, Al: 0.030% or less, O: 0.020% or less, Sn: 0 to 0.01%, Sb: 0 to 0.01%, As: 0 to 0.01%, Bi: 0 to 0.01%, V: 0 to 0.10%, Nb: 0 to 0.10%, Ti: 0 to 0.10%, W: 0 to 0.50%, B: 0 to 0.005%, Ca: 0 to 0.010%, Mg: 0 to 0.010% and REM: 0 to 0.10%, with the balance being Fe and impurities, and satisfying [17.5?Cr+Mo+1.5×Si?19.5] and [11.0?Ni+30×(C+N)+0.5×(Mn+Cu+Co)?17.0].
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: May 24, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroyuki Hirata, Katsuki Tanaka, Kana Jotoku
  • Patent number: 11331878
    Abstract: An electronic device including a housing, a display, an adhesive layer, a first decoration layer, and a second decoration layer. The housing includes a front plate, a rear plate, and a lateral member surrounding a space between the front and rear plates. The display is viewed through at least a portion of the front plate. The adhesive layer is combined with one of the front and rear plates. The first decoration layer includes a first shape-cured layer and a first color layer. The first shape-cured layer is combined with the adhesive layer, has a first three-dimensional pattern, and is cured by an external stimulus. The second decoration layer includes a second shape-cured layer and a second color layer. The second shape-cured layer is combined with the first color layer, has a second three-dimensional pattern, and is cured by an external stimulus.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: May 17, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyunggon Lee, Soonwoo Kwon, Yoojin Kim, Saehee Lee, Yunhui Cho
  • Patent number: 11332799
    Abstract: Disclosed are a case hardened steel which is suitable as a material for producing mechanical structural parts having high rotating bending fatigue strength and impact fatigue strength at a relatively low cost, and a method of producing the same. The case hardening steel has a chemical composition containing, by mass %, C, Si, Mn, P, S, Cr, Mo, B, Ti, N, and O within a range satisfying a predetermined relationship, and Al in at least a predetermined amount in relation to the B, N, and Ti contents, with the balance being Fe and inevitable impurities, wherein ?I?80 is satisfied, where I represents an area in ?m2 of an oxide-based inclusion located at the center of a fish-eye on a fracture surface of the case hardening steel after being subjected to carburizing-quenching and tempering and subsequently to a rotating bending fatigue test.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 17, 2022
    Assignee: JFE STEEL CORPORATION
    Inventors: Keisuke Ando, Takashi Iwamoto, Kimihiro Nishimura, Katsuyuki Ichimiya
  • Patent number: 11332831
    Abstract: An insulating coating for an electrical steel sheet is provided that is formed on a surface of a base metal of the electrical steel sheet and that contains a polyvalent metal phosphate of one or more elements selected from Al, Zn, Mg and Ca, and has an enriched layer of a divalent metal at an interface with the surface of the base metal. An enrichment of the divalent metal contained in the enriched layer is 0.01 g/m2 or more and less than 0.2 g/m2.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: May 17, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Shuichi Yamazaki, Masaru Takahashi, Kazutoshi Takeda, Hiroyasu Fujii, Akira Akagi, Hiroki Hori