公开(公告)号：US20190140160A1

公开(公告)日：2019-05-09

申请号：US16079522

申请日：2017-02-24

Applicant: PIEZO STUDIO INC. ,  TOHOKU UNIVERSITY

Inventor： Akira YOSHIKAWA ,  Yuui YOKOTA ,  Yuji OHASHI ,  Kei KAMADA ,  Tetsuo KUDO ,  Kenji INOUE ,  Yasuhiro SHOJI ,  Yu IGARASHI ,  Mototaka ARAKAWA ,  Shunsuke KUROSAWA ,  Akihiro YAMAJI

IPC: H01L41/187 ,  C30B29/34 ,  C30B15/08 ,  C01B33/24 ,  C01B33/26 ,  H01L41/41

Abstract: The present invention makes clear and defines a congruent composition of a langasite-based oxide, and establishes a method of manufacturing a crystal by any desired composition of AE3ME1+a(Ga1-xAlx)3+bSi2+cO14 (AE is an alkaline-earth metal, ME is Nb or Ta, 0≤x≤1, −0.5

公开(公告)号：US20250093565A1

公开(公告)日：2025-03-20

申请号：US18292296

申请日：2022-07-01

Applicant: TOHOKU UNIVERSITY ,  C&A Corporation

Inventor： Akira YOSHIKAWA ,  Kei KAMADA ,  Ryuga YAJIMA ,  Rikito MIRAKAMI ,  Yasuhiro SHOJI

IPC: F21V8/00 ,  G01T1/20 ,  G02B1/04

Abstract: A core material (102) is contained in a cylindrical container (101) (first step). The container (101) is formed from a thermoplastic cladding material. The container (101) can be formed from a heat resistant glass such as a borosilicate glass, for example. The core material (102) is a halide having a lower melting point than the cladding material. Next, the container (101) containing the core material (102) is heated using a heater (151) and stretched, thereby forming an optical fiber emitter (105) comprising a core (103) formed from a halide crystal, and a cladding (104) formed from the cladding material.

公开(公告)号：US20210277504A1

公开(公告)日：2021-09-09

申请号：US16625385

申请日：2018-06-27

Applicant: C&A Corporation ,  TOHOKU UNIVERSITY

Inventor： Akira YOSHIKAWA ,  Rikito MURAKAMI ,  Yui YOKOTA ,  Takayuki NIHEI ,  Kei KAMADA ,  Yasuhiro SHOJI ,  Shunsuke KUROSAWA ,  Akihiro YAMAJI ,  Yuji OHASHI

IPC: C22C28/00 ,  B22D11/00 ,  B22D11/117

Abstract: A metal member according to this invention is composed of polycrystals of a metal made of ruthenium or an alloy containing ruthenium at a maximum ratio. The aspect ratio of a crystal grain of the polycrystalline metal member is 1.5 or more. A plurality of crystal grains forming the metal member are arranged with their major axes being pointed in the same direction, and the number of crystal grains in a section in the major axis direction of the crystal grains is 120 or less per 1 mm2.

公开(公告)号：US20250129450A1

公开(公告)日：2025-04-24

申请号：US18966564

申请日：2024-12-03

Applicant: TOHOKU UNIVERSITY ,  C&A Corporation

Inventor： Rikito MURAKAMI ,  Akira YOSHIKAWA ,  Kei KAMADA ,  Hiroaki YAMAGUCHI ,  Shiika ITOI ,  Yasuhiro SHOJI

IPC: C22C5/04 ,  H05B3/12 ,  H05B3/64

Abstract: This composition includes a Ru—Mo—W alloy having, in atomic %, a chemical composition including Mo: greater than 0% and 49% or less and W: greater than 0% and 45% or less, and the total content of Mo and W in the Ru—Mo—W alloy is greater than 30% and less than 50%.

公开(公告)号：US20180100101A1

公开(公告)日：2018-04-12

申请号：US15566199

申请日：2016-05-27

Applicant: TOHOKU UNIVERSITY ,  C&A CORPORATION

Inventor： Shunsuke KUROSAWA ,  Akira YOSHIKAWA ,  Kei KAMADA ,  Yuui YOKOTA ,  Yuji OHASHI ,  Takahiko HORIAI ,  Yasuhiro SHOJI ,  Rikito MURAKAMI

IPC: C09K11/77 ,  H01L27/146 ,  C01F17/00 ,  G01T1/202 ,  G01T1/20 ,  C30B29/22 ,  C30B15/00

CPC classification number: C09K11/7774 ,  C01F17/0043 ,  C09K11/00 ,  C30B15/00 ,  C30B29/22 ,  G01T1/161 ,  G01T1/20 ,  G01T1/2006 ,  G01T1/202 ,  G01T1/2023 ,  H01L27/14663 ,  H01L31/0232

Abstract: A crystal material that is represented by a general formula (1): (RExA1-x-y-sByM′s)2+α(Si1-t′M″t)2+βO7+γ (1), the crystal material having a pyrochlore type structure, being a nonstoichiometric composition, and being a congruent melting composition, wherein in Formula (1), A contains at least one or more selected from Gd, Y, La, Sc, Yb, and Lu; B contains at least one or more selected from La, Gd, Yb, Lu, Y, and Sc; 0.1≤y

公开(公告)号：US20150346360A1

公开(公告)日：2015-12-03

申请号：US14655666

申请日：2013-12-26

Applicant: TOHOKU UNIVERSITY

Inventor： Akira YOSHIKAWA ,  Shunsuke KUROSAWA ,  Yuui YOKOTA ,  Yasuhiro SHOJI ,  Akira SUZUKI ,  Toetsu SHISHIDO

IPC: G01T1/202 ,  C09K11/77

CPC classification number: G01T1/2023 ,  C09K11/7769 ,  C09K11/7774 ,  C09K11/7775 ,  C30B13/00 ,  C30B15/00 ,  C30B29/22 ,  C30B29/32 ,  C30B29/34 ,  G21K4/00

Abstract: A crystal material represented by a general formula (1): (Gd1-x-y-zLaxMEyREz)2MM2O7 (1), where ME is at least one selected from Y, Yb, Sc, and Lu; RE is Ce or Pr; MM is at least one selected from Si and Ge; and ranges of x, y, and z are represented by the following (i): (i) 0.0≦x+y+z

Abstract translation: 由通式（1）表示的结晶材料：（Gd1-x-y-zLaxMEyREz）2MM2O7（1），其中ME为选自Y，Yb，Sc和Lu中的至少一种; RE为Ce或Pr; MM是选自Si和Ge中的至少一种; 并且x，y和z的范围由以下（i）表示：（i）0.0＆nlE; x + y + z <1.0,0.05＆nlE; x + z <1.0,0.0＆amp; nlE; y <1.0和0.0001 ＆nlE; z <0.05（其中，当RE为Ce时，y = 0为例外）。