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:
Mar. 30, 1993
Filed:
Nov. 19, 1991
Applicant:
Inventors:
Anil Patel, Leicester, GB;
Roger W Whatmore, Milton Keynes, GB;
Assignee:
GEC-Marconi Limited, , GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 22 ; 20419215 ; 20419222 ; 264 81 ; 264219 ; 264317 ; 264338 ;
Abstract
A method of manufacturing a free standing perovskite lead scandium tantalate film. A film of lead scandium tantalate is formed on a layer of MgO deposited on a sapphire substrate. The MgO layer is etched by phosphoric acid thereby releasing the lead scandium tantalate film from the substrate.