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:
Jun. 04, 1985
Filed:
Oct. 20, 1983
Applicant:
Inventors:
Dominique Broussoux, Marcoussis, FR;
Hugues Facoetti, Fontenay-Sous-Bois, FR;
Francois Micheron, Gif-sur-Yvette, FR;
Lucien Monnerie, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C08F / ;
U.S. Cl.
CPC ...
252 629 ; 2041592 ; 20415917 ; 2041 / ; 264 22 ; 264 24 ; 310311 ; 310800 ; 361225 ; 427100 ; 428421 ; 526242 ; 526250 ; 526255 ;
Abstract
The invention relates to piezoelectric or pyroelectric polymer materials. It provides a process for manufacturing these materials comprising pressing polymer pellets while heating, dipping the obtained sheets in water, stretching the sheets, electrically polarizing the sheets by applying between the two faces of the sheets an electric orientation field, irradiating the sheets to obtain crosslinking and reheating the sheets.