Alcatel Alsthom Compagnie Generale D'electricite

Compagnie Generale D'electricite

Societe Anonyme Dite: Compagnie Generale D'electricite

Alcatel N.v.

Alcatel Cable

Alcatel Cit

Gemplus

Compagnie Generale D'electricite S.a.

Solvay

Artec Aerospace

Thomson-Csf Communications

Alain R Le Mehaute

Stanislas Galaj

Denis Cottevieille

Frederic Heliodore

Philippe Bordet

Claude Roques-Carmes

Jean Rouxel

Bernard Aladenize

Stephane Lamesch

Jean-Francois Quiniou

Dalloul Wehbi

Raymond Brec

Jean-Louis Braut

Annie Le Blanc-Soreau

Michel Bernard Armand

Etienne Hannecart

Claude Franquinet

Christian Gustave Leriche

Gilles Crepy

Marc Capdepuy

Jacques Mouchart

Genevieve Chabassier

Lionel Bernard

Georges Marcellin

Thierry Hamaide

Jean-Michael Gabriagues

Claude Belin

Jean-Pierre Lelieur

Philippe Sautet

Jean Claude Andre

Vincent Dionnet

Christian Joachim

Florent Haddad

Lydie Robert

Francedillaois Tsobnang

Francedillaois Lefort

Antoine Derossis

Alain Dugast

New molecules having the general formula A:N&mdash;B, where A:N&mdash; is .alpha.-substituted conjugated cyclic amine, with N being the N atom; and B is an .alpha.-substituted cyclic radical. These materials have ferromagnetic properties and may be use in a variety of fields and particularly in any electromagnetooptical or magnetoresistive system.

Materials with ferromagnetic properties comprising organic molecules with magnetic properties, and methods for making same

A device for transmitting electrical energy or electrical signals comprises a core, an outer conductor and a threshold characteristic dielectric material between the core and the outer conductor. The dielectric material comprises, at least in part, a material that is insulative if the electric field is below a particular threshold and conductive when the electric field exceeds a particular threshold, so as to prevent the transmission of signals for which the electric field is above the threshold. The configuration of the core and/or of the outer conductor is such that the external electric field threshold from which the material becomes conductive is significantly less than the intrinsic breakdown threshold of the material.

Electrical conductor protected against electromagnetic interference exceeding a threshold

Method for damping vibration and the pressure wave from a material

An electrical signal transmission device includes a core and an outer conductor separated by a dielectric. To eliminate external radiated interference, for which the device behaves like a receiving antenna, the core, the outer conductor and/or the dielectric feature discontinuities forming impedance discontinuities. The discontinuities are chosen to prevent propagation towards the core of external interference waves in a particular range of frequencies.

Electrical signal transmission device protected against electromagnetic

The invention is drawn to organic compounds of the general formulae L--A--Z or L--A'--L' as defined in the specification. The compounds are readily crystallizable and can be used for their ferromagnetic properties.

Molecular organic compound with ferromagnetic properties and a method of

The invention provides copolymers having magnetic properties, said copolymers containing aminoaromatic groups, and being based on a structural unit comprising:

Copolymers having magnetic properties

Crystalline compounds with ferromagnetic properties are described which are inclusion compounds comprising metal salts in copolymers in which the repeating unit includes one unit from a first group of aminoaromatic derivatives of 1-naphthylamine and corresponding oxidized forms, connected to one unit from a second group of substituted aminoaromatic compounds selected from substituted amines containing at least two condensed benzene nuclei, substituted polycyclic compounds containing at least one aniline moiety in their structure, and aniline derivatives carrying a substituent connected to the nucleus by an ethynylene or para-phenylene unit, and corresponding oxidized compounds. Methods for the preparation of these compounds are also described.

Ferromagnetic crystalline compounds of copolymers of naphthylamine

The present invention concerns a magnetic copolymer having a structural unit comprising a first multivalent radical and a second multivalent radical derived from an aminoaromatic compound selected from a substituted amine containing at least two condensed benzene nuclei, a substituted polycyclic compound containing at least one aniline unit in its structure, and an aniline derivative substituted on the ring by an ethynylidene or paraphenylene side chain, these compounds being in their reduced or oxidized forms, said first and said second radical being coupled together by a carbon-nitrogen bond and the nitrogen atoms being separated by a single aromatic ring, characterized in that said first radical is derived from a compound selected from 1-naphthylamine, which may be substituted, in its reduced or oxidized form.

Magnetic copolymer, a method of manufacture and applications thereof

A coaxial cable intended to be used in the field of telecommunications comprises a metal core surrounded by at least two layers one of which is a dielectric material layer and the other of which, disposed between the core and the dielectric material layer over at least part of the length of the cable, is a semiconductor composite material layer comprising an insulative matrix and an undoped polymeric conductor containing conjugate bonds. The cable features intrinsic filtering of electromagnetic interference conducted by the cable at frequencies below 1 GHz.

Telecommunication cable

Material for semiconductive screening

Self-doped conductive polyanilines, and method of preparing them

The invention relates to methods of enabling fractal objects to be manufactured. In accordance with the invention, the method consists in performing repeated scaling reductions on a parent generator defined by means of three-dimensional coordinates, in storing the coordinates of each daughter object obtained by such a scaling reduction, and in repeating the scaling reduction until the dimensions of a daughter object become less than a given threshold value. The coordinates of the daughter objects are then supplied to stereolithographic apparatus which manufactures the fractal object defined by assembling together the daughter objects.

Method of manufacturing a fractal object by using steriolithography and

The invention concerns an electrically insulating body including at least two polymer materials and a method of making such a body. It is characterized in that its internal structure (61) is mainly formed by a first polymer material and that its surface structure (60, 62) is mainly formed by a second polymer material, said first polymer material having a higher molecular weight than said second polymer material. The proportion in the body of the first polymer material relative to the second polymer material reduces progressively from the internal structure (61) towards the surface structure (60, 62). The invention is applicable especially to insulating electric conductors (26) and enables insulators to be obtained having both a high dielectric strength and a good quality of shape.

Method of making an insulating body of high dielectric strength

Growing community of inventors

Gif Sur Yvette, France

Alain R Le Mehaute