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| Number | Title | Issue Date |
| 5245474 | Electromagnetic filter device The optical filter device comprises a stack of thin layers exhibiting a sequences h and g which defines a fractal organization. This device makes it possible to obtain spectrum lines which are extremely fine and very well resolved.... | 09/14/1993 |
| 5202009 | Electrolyte solid polymer reticule A cross-linked polymer solid electrolyte of a polyether having amine functions cross-linked by a curing compound including two epoxy functions, and thereby defining a three-dimensional lattice which complexes an ionizable salt of the formula M+... | 04/13/1993 |
| 5194714 | Method and device for outside plasma deposition of hydroxyl ion-free silica Method of outside plasma deposition onto a rod (17,22) of silica substantially free from hydroxyl ions, possibly doped to change its refractive index, by reaction with oxygen of a silicon compound and possibly of doping compounds, in the presence of a gas... | 03/16/1993 |
| 5116808 | Tape based on a superconducting oxide, and method of manufacture A tape based on a superconducting oxide containing Cu-O, the tape being characterized by the fact that it comprises a substrate of flexible metal or composite material having a rectangular cross-section and provided on at least one of its faces with a cav... | 05/26/1992 |
| 5111898 | Variable configuration intervention vehicle for rough ground The vehicle comprises a vehicle body, propulsion units whereby the body bears against the ground by applying support forces thereto that can be represented by support parameters, propulsion unit displacement actuators for displacing the propulsion units r... | 05/12/1992 |
| 5090979 | Method of manufacturing an optical fiber preform having doped cladding According to the present invention, a preform (7) for an optical fiber is made from a tube having a substrate layer (16) of fluorine-doped silica and a support layer (18) of non-doped silica. A cladding layer (8) of fluorine-doped silica and a core layer ... | 02/25/1992 |
| 5038357 | Gaseous flux laser device The invention concerns a gaseous flux laser device. To enable the removal into the atmosphere of the exhaust gases of an N2 -CO2 laser while maintaining a sufficiently low pressure in the zone where the stimulated light emission occu... | 08/06/1991 |
| 5007016 | Fractal-type periodic temporal signal generator A signal generator generates a temporal signal with a periodic configuration defined by an arrangement of seed patterns resulting from a branching construction iteratively using laws for composing several patterns and consisting in defining the periodic c... | 04/09/1991 |
| 4965746 | Recursive-type periodic temporal signal generator The temporal signal generated has a periodic configuration defined by an arrangement of seed patterns resulting from a branching construction employing n successive applications of m pattern type laws each defined by a specific arrangement of p pattern ty... | 10/23/1990 |
| 4906370 | Tangential filtration apparatus Rotating membrane tangential filtration apparatus with low power consumption is characterized by a direct drive system (10) along the axis of its membrane (5), a sealing system (11, 16) between the residue and filtrate compartments, which system used fric... | 03/06/1990 |
| 4862100 | Gas laser generator Gaseous flux laser generator of the nitrogen and carbon dioxyde type. The dimensions of the enclosure and the conditions of injection of the nitrogen and those of the electrical supply are chosen to set up a luminescent discharge in a swirling flow.... | 08/29/1989 |
| 4843059 | Superconductive mixed valence copper oxide, and method of making it A superconducting mixed valence copper oxide, having a formula of the type: where: 0ࣘx | 06/27/1989 |
| 4840442 | Multidielectric mirror for carbon dioxide laser providing the mid infrared, in high reflectance with good protection against mechanical attack A multidielectric mirror, in particular for the mid infrared, in which the last optical layer of a multidielectric stack is constituted by a composite layer including a thin protective surface layer of a material of amorphous structure together with a hig... | 06/20/1989 |
| 4814575 | Method of surface-treating ceramic workpieces using a laser A carbon dioxide laser (4) directs a beam (6) onto a ceramic workpiece to be treated (18), which workpiece moves along arrow (20). A carrier gas injector (14) injects a moderate throughput of spheroidized powder of a ceramic material into said beam. After... | 03/21/1989 |
| 4763009 | Method and apparatus for remotely measuring the distribution of a physico-chemical parameter in a medium The invention relates to a method and to apparatus for remotely measuring the distribution of a physico-chemical parameter in a medium. The method consists in exciting measurement points (20) situated in a medium (17) in succession via an optical fiber (1... | 08/09/1988 |
| 4745592 | Coherent photonic telecommunications system The system comprises subscriber stations (1, 2) each comprising a semiconductor laser generator (4) provided with means (3, 5) for modulating its laser output by means of transmit signals and a heterodyned detection system consisting of a photoelectric re... | 05/17/1988 |
| 4710914 | Optical fiber telecommunication device An optical fiber telecommunication device comprises an interconnecting volume and N stations connected to this volume by pairs of transmit and receive optical fibers. Each station comprises a tunable optical frequency laser coupled to the transmit fiber a... | 12/01/1987 |
| 4708801 | Method and device for filtering a suspension of particles in a liquid In a method and device for filtering a suspension of particles in a liquid the liquid is passed continuously through a porous membrane, particles from the suspenion gradually accumulating on the membrane and clogging its pores. The filtered liquid is caus... | 11/24/1987 |
| 4706257 | Gas laser generator and method of operating same The generator comprises an optical cavity (3, 4) resonating according to an axis (2) and two annular electrodes (5, 6) disposed along said axis, one of said electrodes (5) being provided with gas injection channels (9, 10) having injection axes (11, 12) d... | 11/10/1987 |
| 4699083 | Molecular beam generator using thermal decomposition for manufacturing semiconductors by epitaxy Arsine or phosphine are thermally decomposed to form a molecular beam of arsenic or phosphorous by using the inside surfaces of a thermal decomposition duct (11) made of quartz or of boron nitride and heated on the outside by radiation from a filament (30... | 10/13/1987 |
| 4695480 | Method and apparatus for drawing a tape constituted by a support coated in a layer of semiconductor material, said tape being drawn from a liquid bath of said material The method consists in clamping the edges of the tape between two jaws of a clamp and in displacing the clamp vertically upwardly. The apparatus includes two vertical columns (10, 11) along which two carriages (12, 13) are capable of moving, with each car... | 09/22/1987 |
| 4683448 | High sensitivity interferential electro-optical modulator High sensitivity interferential electro-optical modulator. The invention concerns an interferential electro-optical modulator. This modulator contains a Mach-Zehnder integrated interferometer in which each interferometer arm (24, 26) is overlapped by an e... | 07/28/1987 |
| 4670752 | Hard-wired circuit for handling screen windows The window handler circuit is inserted between an image memory (7) having as many pages as there are possible windows and a screen controller capable of reading from any of the pages of the image memory. The handler comprises two auxiliary memories (3, 4)... | 06/02/1987 |
| 4647376 | Device for removing the liquid phase from a suspension A device for abstracting the liquid phase from a suspension comprises a microporous membrane (23) applied on the outside of a microporous body (22) to which a flat capillary duct (11, 18) is fixed. Means (9) are provided to rotate the duct about a vertica... | 03/03/1987 |
| 4556614 | Method of producing a polymer based solid electrolyte for an electrochemical cell A method of producing a solid electrolyte for an electrochemical cell, the cell comprising at least one first complexing polymer presenting in its monomer pattern at least one heteroatom and at least one ionizable alkaline salt complexed in the said polym... | 12/03/1985 |
| 4520752 | Device for depositing a layer of polycrystalline silicon on a carbon tape A device for depositing a layer of polycrystalline silicon on a carbon tape comprises a bath of molten silicon through which the carbon tape is drawn vertically. Two semicircular channels are supported vertically in the vicinity of the edges of the tape w... | 06/04/1985 |
| 4517061 | Process for preparing arylacetic and arylpropionic acids The process includes an electrochemical reduction, under carbon dioxide atmosphere, of benzyl type ArCH2 X or ArCH(CH3)X halogenides. According to the invention, the process consists of operating in the presence of a catalyst containing a... | 05/14/1985 |
| 4509174 | Capacitor discharge excited gas laser The laser comprises a gas-filled channel (51) extending between a pair of metal plates (2 and 3). The laser is excited by a spark discharge through the gas from one plate to the other. The energy for the spark comes form a pair of built-in capacitors exte... | 04/02/1985 |
| 4495631 | Gas laser in which the gas is excited by capacitor discharge A gas laser in which the gas is excited by laser discharge, said laser including two capacitors formed by two parallel metal plates (2, 3) between which two dielectric parts (4,5) are spaced apart to form a passage (6) which contains the laser gas. It fur... | 01/22/1985 |
| 4487689 | System for filtering a liquid First and second identical filters (6, 20) are connected in series. A backpressure unit (30) for intermittent backwashing is connected to the outlet from the second filter. Means are provided for measuring or setting the pressure P1 at the inle... | 12/11/1984 |
| 4487661 | Method and device for determining the physical characteristics of a semiconductor material In a method for determining the physical characteristics of a silicon wafer, one side of the wafer (4) is removably fixed to the base (2) of a container (1) so as to close off a hole (3) therein. An electrical connection to this side of the wafer (4) is m... | 12/11/1984 |
| 4485334 | Spark gap apparatus comprising a plurality of pairs of electrodes in parallel A plurality of electrodes (7, 10) are arranged along two rows facing each other in pairs, leaving a spark gap in between the rows of electrodes. Each row comprises a plurality of electrodes connected in parallel. The electrodes are in a gas. The problem i... | 11/27/1984 |
| 4478880 | Method of fabricating polycrystalline silicon strips A fabrication method for use in making photocells consisting in depositing on the top face of a carbon ribbon (4) being moved horizontally in its lengthwise direction through an oven (9) a layer of silicon, said oven being imparted a vertical temperature ... | 10/23/1984 |
| 4447789 | Laser amplifier The amplifier has a fluid active medium and contained in housing (1). The medium is excited by electric discharge in a resistance (4) constituted by a conductive layer deposited on an insulating support. Application to iodine lasers.... | 05/08/1984 |
| 4407908 | Cathode for an electrolyser A cathode for an electrolyser. It comprises porous conductive material which includes sintered nickel impregnated with a catalyst, characterized in that said catalyst is a molybdate of nickel or iron or mixtures thereof. The invention is used for manufact... | 10/04/1983 |
| 4385801 | Fibre-to-fibre connector including a component for joining it to an optical cable The invention relates to a fibre-to-fibre connector including a component for joining it to an optical fibre cable. A flat connector with two parallel layers of fibres (18) is easily connected to a round multi-fibre optical cable (12) due to the fact that... | 05/31/1983 |
| 4375685 | Gas laser assembly which is capable of emitting stabilized frequency pulse radiations The invention relates to a gas laser assembly which is capable of emitting stabilized frequency pulse radiation. Said arrangement includes a first continuous gas laser generator and a second pulse gas laser generator, an optical system (19, 56, 20) to inj... | 03/01/1983 |
| 4330496 | Method of sintering tubular ceramic parts A tubular ceramic part is formed with a shoulder at an open end of the part, the tubular part is inserted in an opening provided in a horizontal plate which is disposed inside a sintering chamber so that the part is kept suspended in the chamber by means ... | 05/18/1982 |
| 4307350 | Gas laser The gas laser includes in particular a cathode (2) which is substantially cylindrical about an axis (10) parallel with the axis of the laser cavity, said cathode being provided with protrusions (11) formed by grooves in which insulated conductor wires (12... | 12/22/1981 |
| 4297420 | Electrode for a lead accumulator The invention relates to an electrode for a lead accumulator. It includes an electronically conductive core coated with an active material which contains grains of lead monoxide, lead sulphate and a binding agent which is suitable for forming a three-dime... | 10/27/1981 |
