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:
Feb. 25, 1997
Filed:
Sep. 26, 1994
Applicant:
Inventors:
Sally M Laffey, Eatontown, NJ (US);
John R Vig, Colts Neck, NJ (US);
Mary A Hendrickson, Forked River, NJ (US);
Assignee:
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
451 36 ; 451 41 ; 1566251 ;
Abstract
A piezoelectric material langasite, having a defect free surface is obtai by polishing the surface of the material with a colloidal silica suspension diluted with water to about 10 to 30% concentration by weight and etching the surface of the polished piezoelectric material in an approximate 1:50:150 solution of HCl:HF:H.sub.2 O at about 70.degree. C.