The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 2021
Filed:
Feb. 24, 2017
Piezo Studio Inc., Miyagi, JP;
Tohoku University, Miyagi, JP;
Akira Yoshikawa, Miyagi, JP;
Yuui Yokota, Miyagi, JP;
Yuji Ohashi, Miyagi, JP;
Kei Kamada, Miyagi, JP;
Tetsuo Kudo, Miyagi, JP;
Kenji Inoue, Miyagi, JP;
Yasuhiro Shoji, Miyagi, JP;
Yu Igarashi, Miyagi, JP;
Mototaka Arakawa, Miyagi, JP;
Shunsuke Kurosawa, Miyagi, JP;
Akihiro Yamaji, Miyagi, JP;
PIEZO STUDIO INC., Miyagi, JP;
TOHOKU UNIVERSITY, Miyagi, JP;
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 AEME(GaAl)SiO(AE is an alkaline-earth metal, ME is Nb or Ta, 0≤x≤1, −0.5<a≤0 or 0<a<0.5, −0.5<b≤0 or 0<b≤0.5, and −0.5<c≤0 or 0<c<0.5, excluding a=b=c=0). This makes it possible to suppress the formation of an impurity, and improve the yield and crystal manufacturing rate. The raw material is a raw material mixture prepared by mixing an alkaline-earth metal or its carbonate or oxide, Nb or Ta or its oxide, Ga or its oxide, Al or its oxide, and Si or its oxide.