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:
Sep. 29, 1998
Filed:
Jan. 15, 1997
Corinne C Dejugnac, La Seyne/Mer, FR;
Alain A Scarpitta, Toulon, FR;
Michel M Boisrayon, Le Beausset, FR;
Etat Francais Represented by the Delegue General, Paris, FR;
Abstract
The invention relates to the areas of piezoelectricity and magnetism, and relates in particular to a composite material having piezoelectric or magnetic properties and a method for manufacturing the same. The composite material can be used, for example, in piezosensitive sensors or in magnetic sensors. The method according to the invention includes culturing microorganisms in a nutrient medium in the presence of a piezoelectric powder or magnetic powder. The microorganisms fix or ingest the powder, and are subsequently extracted from the nutrient medium and dehydrated to obtain dry particles. The dry particles are then compacted or inserted into a matrix to constitute the composite material. The microorganisms can optionally be separated from the particles prior to compaction of the particles or insertion of the particles into the matrix.