Rhone-poulenc Industries

Minnesota Mining and Manufacturing Company

Agence Nationale De Valorisation De La Recherche (anvar)

Compagnie Generale D'electricite S.a.

Rhodia Electronics & Catalysis

Claude Fouassier

Bertrand Latourrette

Paul Hagenmuller

Patrick Dougier

Romano Morlotti

Thierry Le Mercier

Alain Levasseur

Bertrand Latourette

Claude Ceintrey

Claude Delmas

Alain Garcia

Jean-Maurice Reau

Bernard Cales

Wilfried Blanc

Bernadette Saubat

Jean-Phillippe Browaeys

The invention concerns a light transforming material, in particular for greenhouse walls, comprising as additive a barium and magnesium silicate of formula BaEuMgMnSiO, wherein 0&#x3c;x&#x2266;0.3 and 0&#x3c;y&#x2266;0.3and 0&#x3c;y=0.3. The material is capable of transforming solar energy of UV range into a red light. The material can also be used in paints and cosmetics.

Light-converting material comprising a barium magnesium silicate as additive

A method for recording and reproducing a radiation image comprising the steps of (i) causing a visible radiation stimulable phosphor to absorb a high-energy radiation passing through an object, (ii) stimulating said phosphor with visible radiation to release the stored energy as fluorescent light and (iii) detecting said fluorescent light with light detecting means, is characterized by the fact that the photostimulable phosphor is selected within the group of divalent europium activated alkali earth metal halosilicates. Apparatus for recording and reproducing a radiation image using the above described method. Panel for storing a radiation image containing the above described photostimulable phosphors. Phosphors selected within the group of alkali earth metal halosilicates activated with divalent europium in the presence of Al and/or Ga and/or Na and/or K.

Method for recording and reproducing a radiation image, apparatus using

New luminescent substances are disclosed. They have a monoclinic crystalline structure and are formed of a double borate of magnesium and rare earths having the general formula Ln.sub.1-x Tb.sub.x MgB.sub.5 O.sub.10 in which Ln represents at least one element selected from the group consisting of the lanthanides and yttrium and in which 0&lt;x.ltoreq.1. The luminescent substances can be used in screens or tubes, for example, in low-pressure mercury vapor discharge lamps and plasma panels.

Luminescent substances having a base of double borate of magnesium and

Hydrated strontium fluosilicates activated with divalent europium, having the formula:

Novel black light emitting luminophors

Luminophors which luminesce in the blue region of the spectrum have the formula:

Novel blue light emitting luminophors

An amorphous cationic conductor of lithium comprising a composition corresponding to the general formula:

Amorphous cationic conductors

Novel alkaline earth metal fluosilicates which are activated with divalent europium are disclosed corresponding to the formula:

Novel luminophores emitting ultraviolet radiation, and uses thereof

The invention relates to lamelliform oxides of high ionic conductivity which contain monovalent elements inserted between lamellae of oxides of the type (L.sub.x M.sub.1-x) O.sub.2 wherein L is a trivalent element, M is a tetravalent element and x is a number between 0 and 1. Such oxides are useful as solid electrolytes in electrochemical generators or cells.

Growing community of inventors

Gradignan, France

Claude Fouassier