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. 07, 2025
Filed:
Mar. 23, 2019
Applicant:
Secretary, Department of Atomic Energy, Mumbai, IN;
Inventors:
Gnanasekaran Thiagarajan, Kalpakkam, IN;
Lakshmi Gandhan I.ilango, Kalpakkam, IN;
Asokane Cannessane, Kalpakkam, IN;
Jeyan Ramamurthy Mattamanna, Kalpakkam, IN;
Saju Thomas Abraham, Kalpakkam, IN;
Assignee:
Secretary, Department of Atomic Energy, Mumbai, IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H10N 30/073 (2023.01); H10N 30/06 (2023.01); H10N 30/87 (2023.01); H10N 30/88 (2023.01);
U.S. Cl.
CPC ...
H10N 30/073 (2023.02); H10N 30/06 (2023.02); H10N 30/877 (2023.02); H10N 30/88 (2023.02);
Abstract
The disclosed method of diffusion bonding of a lead zirconate titanate piezoelectric crystal to a metal wear plate, for the fabrication of an ultrasonic transducer operable at high temperatures and able to withstand repeated thermal cycling, comprises depositing noble metal coatings on both bonding surfaces, bringing the surfaces into contact, and heating under pressure at a temperature ranging from 270 to 400° C.