Patents Examined by Archene A. Turner
  • Patent number: 10107335
    Abstract: A bearing component composed of steel which contains carbon not less than 0.95 mass % and not more than 1.1 mass %, silicon less than 0.3 mass %, manganese less than 0.5 mass %, sulfur less than 0.008 mass %, and chromium not less than 1.4 mass % and less than 1.6 mass % and is composed of remainder iron and an impurity and having a carbonitrided layer formed at a surface portion including a contact surface is provided. An average concentration of nitrogen in the surface portion is not lower than 0.3 mass % and not higher than 0.6 mass % and variation in nitrogen concentration in the surface portion is not higher than 0.1 mass %. An area ratio of a precipitate in a region where no carbonitrided layer is formed is not higher than 7%.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 23, 2018
    Assignee: NTN CORPORATION
    Inventors: Daisuke Sato, Chikara Ohki
  • Patent number: 10100413
    Abstract: A base material is composed of a metal or ceramics, and an aluminum nitride coating is formed on an outermost surface thereof. The aluminum nitride coating is formed by impact sintering and contains fine particles having a particle diameter of 1 ?m or less. A thickness of the aluminum nitride coating is no less than 10 ?m. A film density of the aluminum nitride coating is no less than 90% An area ratio of aluminum nitride particles whose particle boundaries are recognizable existing in a 20 ?m×20 ?m unit area of the aluminum nitride coating is 0% to 90% while an area ratio of aluminum nitride particles whose particle boundaries are unrecognizable is 10% to 100%. Such a component for a plasma apparatus having the aluminum nitride coating can provide a strong resistance to plasma attack and radical attack.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: October 16, 2018
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Michio Sato, Takashi Hino, Masashi Nakatani
  • Patent number: 10100929
    Abstract: The present invention provides a piston ring having excellent abrasion resistance to an aluminum alloy cylinder or cylinder liner formed of a mating material and is therefore capable of decreasing abrasion of the mating material. An exemplary piston ring has a hard carbon coating formed on an outer peripheral surface, and the hard carbon coating contains 0.5 atom % or more to less than 5 atom % of tungsten (W).
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: October 16, 2018
    Assignee: KABUSHIKI KAISHA RIKEN
    Inventors: Keiji Honda, Katsuhiro Tsuji, Masaki Moronuki, Takuma Sekiya
  • Patent number: 10099297
    Abstract: A tool for machining fiber-reinforced materials, said tool having a tool body having a particular cutting edge that has at least a main function surface and has a diamond coating applied at least to said main function surface. In order to provide a tool and a method which are especially suitable for machining fiber-reinforced materials, the surface of the diamond coating has a reduced peak height Spk of less than 0.25 ?m.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: October 16, 2018
    Assignee: CemeCon AG
    Inventors: Oliver Lemmer, Manfred Weigand, Michael Woda, Werner Pütz, Biljana Mesic
  • Patent number: 10100405
    Abstract: A coated cutting insert for a chipforming material removal operation wherein the coated insert has a substrate and a coating scheme on the substrate. The coating scheme includes a CVD transition coating layer. The coating scheme further includes a CVD multi-layered coating scheme having a plurality of coating sets. Each one of the coating sets has an aluminum oxide coating layer and a nitrogen-containing coating layer.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: October 16, 2018
    Assignee: KENNAMETAL INC.
    Inventors: Rodrigo A. Cooper, Zhenyu Liu, Peter R. Leicht, Yixiong Liu
  • Patent number: 10094422
    Abstract: A bearing component composed of steel which contains carbon not less than 0.95 mass % and not more than 1.1 mass %, silicon less than 0.3 mass %, manganese less than 0.5 mass %, sulfur less than 0.008 mass %, and chromium not less than 1.4 mass % and less than 1.6 mass % and is composed of remainder iron and an impurity and having a carbonitrided layer formed at a surface portion is provided. An average concentration of nitrogen in the surface portion is not lower than 0.3 mass % and not higher than 0.6 mass % and variation in nitrogen concentration is not higher than 0.1 mass %. An amount of retained austenite is not greater than 8 volume %. An area ratio of a precipitate in the inside where no carbonitrided layer is formed is not lower than 11%.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 9, 2018
    Assignee: NTN CORPORATION
    Inventors: Chikara Ohki, Yukio Matsubara, Daisuke Sato
  • Patent number: 10087514
    Abstract: An amorphous and nano nitride composite thin film, a method for forming the same, and an electronic device having the same are provided. The amorphous and nano nitride composite thin film has a composite structure in which a nitride phase that includes Zr and Al as nitride constituent elements and at least one metal phase are mixed, wherein the metal phase includes at least one element selected from the group including Cu and Ni, the nitride phase includes a ZrN crystalline phase in which a size of a grain is in the range of 10 nm to 500 nm, and a volume fraction of the ZrN crystalline phase is 10% or more.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: October 2, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun-soo Park, Keum-hwan Park, Jin-man Park, Seok-moo Hong, Sung-ho Cho, Moung-kwan Park, Jae-won Sim
  • Patent number: 10087989
    Abstract: A bearing component composed of steel which contains carbon not less than 0.95 mass % and not more than 1.1 mass %, silicon less than 0.3 mass %, manganese less than 0.5 mass %, sulfur less than 0.008 mass %, and chromium not less than 1.4 mass % and less than 1.6 mass % and is composed of remainder iron and an impurity and having a carbonitrided layer formed at a surface portion including a contact surface which is a surface in contact with other components is provided. An average concentration of nitrogen in the surface portion is not lower than 0.3 mass % and not higher than 0.6 mass % and variation in nitrogen concentration in the surface portion is not higher than 0.1 mass %.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 2, 2018
    Assignee: NTN CORPORATION
    Inventors: Daisuke Sato, Chikara Ohki
  • Patent number: 10087513
    Abstract: A piston ring having a hard carbon film formed on at least an external peripheral sliding surface of a piston ring base material, the hard carbon film having an sp2 component ratio within a range of 40% to 80% inclusive as measured by a TEM-EELS spectrum which combines electron energy loss spectroscopy (EELS) with a transmission electron microscope (TEM), a hydrogen content being in a range of 0.1 at. % to 5 at. % inclusive, and an amount of macroparticles appearing on the surface being within a range of 0.1% to 10% inclusive by area ratio. The hard carbon film is formed on a hard carbon foundation film formed under low-speed film-forming conditions on the side of the piston ring base material, and the hard carbon foundation film is formed with an arc current value 80% or less of the arc current value during the formation of the hard carbon film.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: October 2, 2018
    Assignee: NIPPON PISTON RING CO., LTD
    Inventors: Takuya Ozaki, Hiroyuki Sugiura
  • Patent number: 10086438
    Abstract: A cutting tool made of diamond-coated cemented carbide includes: a tool body made of tungsten carbide-based cemented carbide including: 3 to 15 mass % of Co; at least one of TaC and NbC of which a total amount is 0.1 to 3.0 mass %; and a balance including WC; and a diamond film coating the tool body, the tool body has a plurality of protrusions on a surface of the tool body, an upper portion of each of the protrusions is made of the at least one of TaC and NbC, and a lower portion of each of the protrusions is made of WC and Co, the lower portion being under the upper portion.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: October 2, 2018
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Hideaki Takashima, Hidemitsu Takaoka
  • Patent number: 10076789
    Abstract: A surface-coated titanium carbonitride-based cermet cutting tool is a surface-coated TiCN-based cermet cutting tool in which a Ti compound layer that is a hard coating layer is deposited as a first layer on the surface of a TiCN-based cermet body containing W and Mo, and a Mo-enriched layer having an average thickness of 0.5 to 10 nm is formed at an interface between a TiCN phase of the body and the hard coating layer.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: September 18, 2018
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Makoto Igarashi, Akihiro Murakami
  • Patent number: 10029233
    Abstract: Provided is a wet area member for use in an indoor wet environment, comprising: a base member; and an amorphous carbon layer formed on a surface of the base member and mainly containing carbon atoms, wherein the amorphous carbon layer further contains hydrogen atoms, and the amorphous carbon layer contains the hydrogen atoms in a predetermined amount or more and has a density lower than a predetermined value so as to be capable of inhibiting sticking of water scale for a long period. This makes it possible to obtain a wet area member which exhibits a high stain release property and a high stain release durability.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: July 24, 2018
    Assignee: TOTO LTD.
    Inventors: Saori Ukigai, Hironori Hatono, Atsushi Teramoto, Mayui Noborisaka, Kazuhiro Ishikawa, Satoshi Shimizu, Nobuhiko Kanekuni
  • Patent number: 10030773
    Abstract: A piston ring for a piston of a reciprocating internal combustion engine. The piston ring comprises a body having an outer contact surface. A tribological coating is formed on the outer contact surface of the body. The tribological coating comprises a quaternary Cr—V—Ti—N system. In one form, the tribological coating is deposited on the outer contact surface of the body as a stack of multiple layers.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: July 24, 2018
    Assignee: MAHLE INTERNATIONAL GMBH
    Inventors: Thomas Stong, Thomas Smith
  • Patent number: 10030299
    Abstract: A surface-coated boron nitride sintered body tool includes a cubic boron nitride sintered body and a coating film formed thereon. The coating film includes an A layer and a C layer. The A layer is formed of Ti1-xaMaxaC1-yaNya (where Ma is one or more of Cr, Nb and W; 0?xa?0.7; 0?ya?1). The C layer is formed of Al1-(xc+yc)CrxcMcycN (where Mc is one or more of Ti, V and Si; 0.2?xc?0.8; 0?yc?0.6; 0.2?xc+yc?0.8). The A layer is formed on an outermost surface of the coating film or between the outermost surface of the coating film and the C layer. A distance between the outermost surface of the coating film and an upper surface of the C layer is 0.1 ?m or more and 1.0 ?m or less.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: July 24, 2018
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Nozomi Tsukihara, Makoto Setoyama, Katsumi Okamura
  • Patent number: 10016813
    Abstract: A surface-coated boron nitride sintered body tool is provided, in which at least a cutting edge portion includes a cubic boron nitride sintered body and a coating film formed on a surface of the cubic boron nitride sintered body. The coating film contains Si and includes a B layer formed by alternately stacking one or more of each of a B1 compound layer and a B2 compound layer that are different in composition. A ratio between an average thickness t1 of the B1 compound layers and an average thickness t2 of the B2 compound layers is defined as t2/t1 that satisfies a relation of 0.5<t2/t1?10.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: July 10, 2018
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Nozomi Tsukihara, Katsumi Okamura, Makoto Setoyama
  • Patent number: 10005696
    Abstract: An article includes a substrate and a coating on the substrate. The coating includes a compound of aluminum, boron and nitrogen in a continuous chemically bonded network having Al—N bonds and B—N bonds. Also disclosed is an article wherein the substrate is a plurality of fibers and the coating is a conformed coating of a compound of aluminum, boron and nitrogen having Al—N bonds and B—N bonds. The fibers are disposed in a matrix. Also disclosed is a method of protecting an article from environmental conditions. The method includes protecting a substrate that is susceptible to environmental chemical degradation using a coating that includes a compound of aluminum, boron and nitrogen having Al—N bonds and B—N bonds.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: June 26, 2018
    Assignee: United Technologies Corporation
    Inventor: Wayde R. Schmidt
  • Patent number: 10006547
    Abstract: To provide a hard-amorphous-carbon-coated piston ring having low friction and excellent wear resistance and peeling resistance to reduce the fuel consumption of automobiles, an outer peripheral surface of a steel-made piston ring base material is provided with a primary layer constituted by a CrN/Cr laminate coating or a CrN/TiN laminate coating as thick as 10-60 ?m, which is obtained by alternately laminating CrN-type chromium nitride and chromium metal or TiN-type titanium nitride, an intermediate layer of chromium metal and/or titanium metal as thick as 0.05-1.0 ?m, and then a hard amorphous carbon coating as thick as 0.4-20 ?m.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: June 26, 2018
    Assignee: KABUSHIKI KAISHA RIKEN
    Inventors: Masayuki Sato, Yuuichi Murayama, Youhei Iwamoto, Takuma Sekiya
  • Patent number: 10006116
    Abstract: An intermediate layer forming method to form an intermediate layer formed between a base material and a DLC film using a PVD method includes: a Ti layer film-forming step of film-forming a Ti layer on a base material; and a TiC layer film-forming step of film-forming a TiC layer on the Ti layer, in which in the Ti layer film-forming step, an Ar gas is supplied into a chamber into which the base material is carried and a film-forming pressure is set to a pressure in a range of not less than 0.4 Pa and not more than 1 Pa to film-form the Ti layer, and in the TiC layer film-forming step, an Ar gas and a CH4 gas are supplied into the chamber, a film-forming pressure is set to a pressure in a range of 0.2 Pa or more to less than 0.4 Pa, and a second bias voltage higher in bias voltage than a first bias voltage applied to the base material in the Ti layer film-forming step and higher in bias voltage than ?100 V is applied to the base material to film-form the TiC layer.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: June 26, 2018
    Assignee: DOWA THERMOTECH CO., LTD.
    Inventors: Motohiro Watanabe, Hiroyuki Matsuoka, Wataru Sakakibara, Soichiro Nogami
  • Patent number: 10006546
    Abstract: To provide a piston ring having a hard laminate coating having excellent scuffing resistance, wear resistance and peeling resistance, which can be used in an environment of high mechanical and thermal load in engines, the piston ring is provided on its outer peripheral sliding surface with a CrN-type hard coating as thick as 10-60 ?m and comprising a CrN/CrCN laminate coating having hardness Hv of 1000 or more and residual compression stress of 1500 MPa or less, a laminate unit composed of a CrN layer and a CrCN layer being as thick as 30 nm or more; the CrN/CrCN laminate coating being formed by alternately laminating CrN layers and CrCN layers containing C dissolved in CrN by ion plating.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: June 26, 2018
    Assignee: KABUSHIKI KAISHA RIKEN
    Inventors: Masayuki Sato, Yuuichi Murayama, Youhei Iwamoto, Takuma Sekiya
  • Patent number: 10000381
    Abstract: Systems and methods for MBE growing of group-III Nitride alloys, comprising establishing an average reaction temperature range from about 250 C to about 850 C; introducing a nitrogen flux at a nitrogen flow rate; introducing a first metal flux at a first metal flow rate; and periodically stopping and restarting the first metal flux according to a first flow duty cycle. According to another embodiment, the system comprises a nitrogen source that provides nitrogen at a nitrogen flow rate, and, a first metal source comprising a first metal effusion cell that provides a first metal at a first metal flow rate, and a first metal shutter that periodically opens and closes according to a first flow duty cycle to abate and recommence the flow of the first metal from the first metal source. Produced alloys include AlN, InN, GaN, InGaN, and AlInGaN.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: June 19, 2018
    Assignee: Georgia Tech Research Corporation
    Inventors: Michael William Moseley, William Alan Doolittle