公开(公告)号：US20200148537A1

公开(公告)日：2020-05-14

申请号：US16473455

申请日：2017-12-26

Applicant: SHOWA DENKO K.K.

Inventor： Yuki OTSUKA ,  Masaru FUKASAWA

IPC: C01B21/064 ,  C08L101/00

Abstract: A hexagonal boron nitride powder having an average longer diameter (L) of primary particles in the hexagonal boron nitride powder of more than 10.0 μm and 30.0 μm or less, an average thickness (D) of the primary particles in the hexagonal boron nitride powder of 1.0 μm or more, a ratio of the average longer diameter (L) to the average thickness (D), [L/D], of 3.0 or more and 5.0 or less, and a content of primary particles having a ratio of a longer diameter (1) to a thickness (d), [l/d], of 3.0 or more and 5.0 or less of 25% or more, a method for producing the hexagonal boron nitride powder, and a resin composition and a resin sheet each containing the hexagonal boron nitride powder.

公开(公告)号：US10593359B2

公开(公告)日：2020-03-17

申请号：US15621319

申请日：2017-06-13

Applicant: SHOWA DENKO K.K.

Inventor： Isao Murase ,  Kiminori Sugimoto

IPC: G11B5/73 ,  G11B5/858 ,  G11B5/48

Abstract: A magnetic recording medium substrate is provided in which a NiP type plating film is formed on a surface of an aluminum alloy substrate that includes Si in a range of 9.5 mass % or more and 11.0 mass % or less, Mn in a rage of 0.45 mass % or more and 0.90 mass % or less, Zn in a range of 0.32 mass % or more and 0.38 mass % or less, Sr in a range of 0.01 mass % or more and 0.05 mass % or less. In the alloy structure of the aluminum alloy substrate, an average particle diameter of Si particles is 2 μm or less, the film thickness of the NiP type plating film is 7 μm or more. An outer diameter of the magnetic recording medium substrate is 53 mm or more, the thickness is 0.9 mm or less, and the Young's modulus is 79 GPa or more.

公开(公告)号：US20200083558A1

公开(公告)日：2020-03-12

申请号：US16469004

申请日：2017-11-01

Applicant: SHOWA DENKO K.K. ,  SHOWA DENKO PACKAGING CO., LTD.

Inventor： Akira SAKAWAKI ,  Takaki YASUDA ,  Koji MINAMITANI

IPC: H01M10/0525 ,  H01M10/0562 ,  H01M2/26 ,  H01M10/44

Abstract: A lithium-ion rechargeable battery (1) includes a battery part (100) which performs charging and discharging using lithium ions, and a shell (30) for housing the battery part (100) in the interior thereof. The battery part (100) is configured by laminating: a first battery part (10) formed by laminating a first positive electrode layer (11), a first solid electrolyte layer (12), a first negative electrode layer (13) and a first negative electrode collector layer (14); and a second battery part (20) formed by laminating a second positive electrode layer (21), a second solid electrolyte layer (22), a second negative electrode layer (23) and a second negative electrode collector layer (24). In the shell (30), the first battery part (10) and the second battery part (20) are connected in series.

公开(公告)号：US20200080952A1

公开(公告)日：2020-03-12

申请号：US16559746

申请日：2019-09-04

Applicant: SHOWA DENKO K.K.

Inventor： Yohei FUJIKAWA

IPC: G01N25/18 ,  G01K13/12 ,  G01K1/14 ,  G01J5/12

Abstract: A thermal conductivity measuring device includes a sample container that has a plurality of storage sections; a drive unit that is configured to move the plurality of storage sections of the sample container; and a radiation thermometer that is configured to measure the temperature of a predetermined position of the sample container.

公开(公告)号：US20200080229A1

公开(公告)日：2020-03-12

申请号：US16559875

申请日：2019-09-04

Applicant: SHOWA DENKO K.K.

Inventor： Yohei Fujikawa

IPC: C30B23/06 ,  C30B23/00 ,  C30B29/36 ,  C30B29/60

Abstract: The present invention provides a single crystal growth method capable of suppressing the recrystallization of the raw material gas subjected to sublimation on the surface of the raw material, and suppressing the generation of different polytypes in the crystal growing single crystal. The single crystal growth method is carried out in a crucible comprising an inner bottom for providing a raw material and a crystal mounting part facing the inner bottom. The method comprises in the following order: providing the raw material in the inner bottom; covering at least a part of a surface of the raw material with a metal carbide powder in a plan view from the crystal mounting part; and growing a single crystal disposed in the crystal mounting part by sublimating the raw material by heating.

公开(公告)号：US20200080227A1

公开(公告)日：2020-03-12

申请号：US16558643

申请日：2019-09-03

Applicant: SHOWA DENKO K.K.

Inventor： Kotaro Ishita

IPC: C30B23/00 ,  C30B23/06 ,  C30B29/36 ,  C23C14/06 ,  C23C14/26 ,  C23C14/24 ,  C23C14/54

Abstract: The present invention provides a SiC single crystal manufacturing apparatus, including a crystal growth vessel which has a source loading portion to hold a SiC source, and a lid which is provided with a seed crystal support to hold a seed crystal; an insulating material which has at least one through-hole and covers the crystal growth vessel; a heater which is configured to heat the crystal growth vessel; and a temperature measuring instrument which is configured to measure the temperature of the crystal growth vessel through the through-hole, wherein the inner wall surface of the through-hole of the insulating material is coated with a coating material which contains a heat-resistant metal carbide or a heat-resistant metal nitride.

公开(公告)号：US20200071849A1

公开(公告)日：2020-03-05

申请号：US16553302

申请日：2019-08-28

Applicant: SHOWA DENKO K.K.

Inventor： Hiromasa SUO ,  Kazuma ETO ,  Tomohisa KATO

IPC: C30B29/36 ,  C30B23/06 ,  C01B32/956

Abstract: In an n-type 4H-SiC single crystal substrate of the present disclosure, the concentration of the element N as a donor and the concentration of the element B as an acceptor are both 3×1018/cm3 or more, and a threading dislocation density is less than 4,000/cm2.

公开(公告)号：US10573902B2

公开(公告)日：2020-02-25

申请号：US16471623

申请日：2017-12-27

Applicant: SHOWA DENKO K.K.

Inventor： Suguru Sakaguchi ,  Yoshishige Okuno ,  Takuya Imai ,  Kunchan Lee

IPC: B01J27/04 ,  B01J27/045 ,  B01J27/047 ,  B01J27/051 ,  H01M4/92 ,  H01M8/10 ,  B01J27/043

Abstract: The present invention relates to an oxygen reduction catalyst, an electrode, a membrane electrode assembly, and a fuel cell, and the oxygen reduction catalyst is an oxygen reduction catalyst containing substituted CoS2, in which the substituted CoS2 has a cubic crystal structure, the oxygen reduction catalyst contains the substituted CoS2 within 0.83 nm from the surface thereof, and the substituted CoS2 has at least one substitutional atom selected from the group consisting of Cr, Mo, Mn, Tc, Re, Rh, Cu, and Ag in some of Co atom sites.

公开(公告)号：US20200054966A1

公开(公告)日：2020-02-20

申请号：US16609938

申请日：2018-06-21

Applicant: SHOWA DENKO K.K.

Inventor： Junji SASUGA ,  Hirobumi AOKI ,  Yuzuru KOKIDO

IPC: B01D15/32 ,  B01J20/285 ,  G01N30/34 ,  G01N30/50 ,  G01N30/72 ,  G01N30/74 ,  G01N30/88

Abstract: The present invention relates to a method of separating and analyzing a mixture of oligonucleotides, including performing liquid chromatography using a column packed with a packing material obtained by fixing a diol to a surface of each of porous particles formed of a crosslinked organic polymer. According to this method, the oligonucleotides can be separated and analyzed with higher sensitivity compared to cases where columns having silica gel as a base material are used. In addition, the column can be washed with an alkaline solution.

公开(公告)号：US20200031973A1

公开(公告)日：2020-01-30

申请号：US16494511

申请日：2018-04-04

Applicant: SHOWA DENKO K.K.

Inventor： Aoi HASEGAWA ,  Masatoshi MORI

IPC: C08F222/40

Abstract: A curable resin composition, which has excellent flowability and reactivity at the time of molding, with which a highly reliable cured product which has excellent heat resistance can be obtained by curing is provided. A curable resin composition comprising a polyalkenyl phenol compound (A) and a polymaleimide compound (B), wherein the polyalkenyl phenol compound (A) is a compound containing at least two structural units represented by the following formula (1): where R1 and R2 each independently represent a hydrogen atom, a C1-10 alkyl group, a C1-2 alkoxy group, or a hydroxy group, Q represents a C5-10 cycloalkylene group or a divalent organic group containing an alicyclic fused ring, and Y is an alkenyl group.