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Inventor: Magnier; Claude
Address: Paris, FR
No. of patents: 17
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5118659 |
Production of superconductor materials using a helicoidal flow of hot gases to effect pulverizat |
June 2, 1992 |
| Finely divided, homogeneous and easily sintered superconducting powders of at least one rare earth element, e.g., yttrium and/or lanthanum, at least one alkaline earth metal, e.g., barium, calcium and/or strontium, and at least one transition metal, e.g., copper, nickel, manganese, cobal |
| 5071827 |
Production of superconductor materials |
December 10, 1991 |
| Finely divided, homogeneous and easily sintered superconducting powders of at least one rare earth element, e.g., yttrium and/or lanthanum, at least one alkaline earth metal, e.g., barium, calcium and/or strontium, and at least one transition metal, e.g., copper, nickel, manganese, cobal |
| 5021192 |
Colloidal dispersions of cerium (IV) compound |
June 4, 1991 |
| Highly concentrated, aqueous colloidal dispersions of a cerium (IV) compound, adapted for the impregnation of catalyst supports, are prepared by reacting an aqueous solution of a cerium (IV) salt with a base, to precipitate a certain cerium hydroxynitrate, separating and washing said |
| 4999180 |
Neodymium hydroxynitrate |
March 12, 1991 |
| A neodymium hydroxynitrate, readily calcined into, e.g., neodymium oxide, Nd.sub.2 O.sub.3, has the formula (I): |
| 4976939 |
Processing of rare earth ores |
December 11, 1990 |
| Rare earth hydroxides are recovered from the rare earth ores, e.g., monazite, xenotime and/or bastnasite, by treating the ore with an aqueous solution of an alkali metal hydroxide, under agitation and essentially constant pressure, at a temperature of from about 100.degree. to 220.de |
| 4891199 |
Preparation of zeolites of type ZSM-5 |
January 2, 1990 |
| Zeolites of type ZSM-5, well suited as absorbents/catalysts, are facilely prepared by (i) intimately admixing a source of alumina with a source of silica, in aqueous reaction medium having a pH ranging from 1 to 7 and wherein the molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 ranges from 5 to 1 |
| 4859432 |
Novel ceric oxide particulates and process of making |
August 22, 1989 |
| Morphologically improved ceric oxide particulates have a BET specific surface, measured after calcination at a temperature of from 350.degree. to 450.degree. C., of at least 100 m.sup.2 /g, a total pore volume of at least 0.3 cm.sup.3 /g, and the pores of which having a mean diameter |
| 4788045 |
Stabilized zirconia a process for its preparation and its application in ceramic compositions |
November 29, 1988 |
| A fine powder of stabilized zirconia a process for its preparation and application of the powder in ceramic compositions to obtain good mechanical, thermomechanical and electrical properties.A zirconia hydrate sol having a pH between 0.5 and 5 and containing elementary acicular crystals |
| 4786486 |
Stabilized zirconia particulates |
November 22, 1988 |
| Submicronic zirconia particulates containing stabilizing amounts of yttrium or cerium, well adapted for ceramics applications, are produced by (i) admixing an aqueous suspension of zirconium fluosulfate particles having a pH of from about 0 to 3 with an aqueous solution of a salt of yttr |
| 4757037 |
Neodymium titanate and barium neodymium titanate, processes for their preparation, and their app |
July 12, 1988 |
| A fine powder of neodymium titanate or barium neodymium titanate, a process for its preparation and applications in ceramic compositions. A suspension of particles is formed by mixing a solution of neodymium nitrate or a solution of barium and neodymium nitrates with a sol of titania hav |
| 4748016 |
Process of making finely divided powders of alkaline earth metal titanates |
May 31, 1988 |
| Finely divided powders of alkaline earth metal titanates, well suited for the fabrication of, e.g., ceramic resistors and condensers, are facilely prepared by (i) admixing a solution of an alkaline earth metal nitrate with a titanium sol having a pH ranging from 0.8 to 2.5 and which |
| 4698175 |
Neodymium hydroxy/ammonium nitrate |
October 6, 1987 |
| A novel neodymium hydroxy/ammonium nitrate, readily calcined into, e.g., neodymium oxide, Nd.sub.2 O.sub.3, has the formula (I):wherein 2.ltoreq.x.ltoreq. 2.3,0.7.ltoreq. y.ltoreq.1.0,0.8.ltoreq. z.ltoreq.1.25; and 0.8.ltoreq. n.ltoreq. 1.25. |
| 4673663 |
Catalyst support and process for preparing same |
June 16, 1987 |
| A catalyst support and process for preparing same are provided wherein a metal substrate is coated with a layer of adherent alumina with a layer of chromium interposed between the alumina catalyst support and the metal substrate. The catalyst supports of the invention are especially usef |
| 4671949 |
Novel anhydrous sodium tripolyphosphate |
June 9, 1987 |
| A novel anhydrous sodium tripolyphosphate, well adapted as an additive for foodstuffs and detergent compositions, has an Na/P ratio of essentially 1.667.+-.0.01, an apparent density of from 0.5 to 1.1, a mean agglomerate size of less than 100 microns, a phase I content ranging from 15 to |
| 4671948 |
Anhydrous sodium tripolyphosphate |
June 9, 1987 |
| A novel anhydrous sodium tripolyphosphate, well adapted for detergency applications, has an X-ray diffraction pattern essentially characterizing a phase I sodium tripolyphosphate; a viscosity, in aqueous medium, characterizing a phase II sodium tripolyphosphate; a rate of hydration c |
| 4671947 |
Novel sodium orthophosphate |
June 9, 1987 |
| A novel sodium orthophosphate has the formula Na.sub.5 H.sub.4 (PO.sub.4).sub.3 wherein the Na/P ratio thereof is essentially 5/3, and which is characterized by but a single crystalline phase and a characteristic X-ray diffraction pattern. |
| 4321244 |
Process for the treatment of a calcium aluminophosphate |
March 23, 1982 |
| A process for treating a rock essentially constituted by calcium aluminophosphate, comprising the treatment of the ground rock with a concentrated sulfuric acid in stoichiometric excess with respect to calcium and aluminum, at a temperature of above about 120.degree. C., for a time b |
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