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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.:

US 12439825 B1

PDFFull Text
Date of Patent:
Oct. 07, 2025

Filed:

Dec. 27, 2019

Film structure, single crystal piezoelectric film and single crystal superconductor film

Applicant:

I-pex Piezo Solutions Inc., Yamaguchi, JP;

Inventors:

Takeshi Kijima, Ube, JP;

Akio Konishi, Ube, JP;

Assignee:

I-PEX PIEZO SOLUTIONS INC., Yamaguchi, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Emily P Pham

Assistant Examiner:

Monica Mata

Int. Cl.
CPC ...
H01L 39/12 (2006.01); H01L 41/08 (2006.01); H01L 41/187 (2006.01); H10N 30/00 (2023.01); H10N 30/853 (2023.01); H10N 60/85 (2023.01);
U.S. Cl.
CPC ...
H10N 30/708 (2024.05); H10N 30/853 (2023.02); H10N 30/8536 (2023.02); H10N 30/8542 (2023.02); H10N 30/8554 (2023.02); H10N 30/8561 (2023.02); H10N 60/857 (2023.02);
Abstract

According to the present invention, a piezoelectric film having a single crystal structure is able to be formed, from various piezoelectric materials, on a film structure of the present invention. A film structure according to the present invention includes: a substrate; a buffer film which is formed on the substrate and has a tetragonal crystal structure containing zirconia; a metal film containing a platinum group element, which is formed on the buffer film by means of epitaxial growth; and a film containing Sr(Ti, Ru)O(wherein 0≤x≤1), which is formed on the metal film by means of epitaxial growth.

Find Patent Forward Citations

Kijima, Takeshi. (2025). Film structure, single crystal piezoelectric film and single crystal superconductor film (U.S. Patent No. 12439825). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12439825

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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