| Patent Number |
Title Of Patent |
Date Issued |
| 5603811 |
Process for the treatment of an aqueous solution mainly containing nitric acid and hydrofluoric |
February 18, 1997 |
| A process for treating an aqueous solution mainly containing nitric acid and hydrofluoric acid. The process involves distilling to provide an aqueous solution concentrated in nitric acid and hydrofluoric acid for the separation thereof, then separating by distillation. |
| 5339339 |
Process for carrying out an inspection round of nuclear installations |
August 16, 1994 |
| Process for carrying out an inspection or monitoring round of a nuclear site (5) consisting of recording in a central computer (22) connected to a radiofrequency transmitter/receiver or transceiver (24) a combination or sequence of different collection or reading points (12) grouping sen |
| 5220947 |
Apparatus for emptying and rinsing non-recoverable flasks containing a toxic product |
June 22, 1993 |
| In order to automatically carry out the emptying and rinsing of non-recoverable bottles or flasks (78) made from a perforatable material such as polyethylene and e.g. containing a low activity solution (88), an apparatus is proposed making it possible to pass the inverted bottles und |
| 5198037 |
Method for unclogging a pipe carrying dangerous substances |
March 30, 1993 |
| So as to unclog a pipe (16) carrying dangerous and accessible substrances after the removal of a movable member (24, 26), this member is replaced by a guiding member (42), a hydraulic shuttle (66) then being introduced into this guiding member, this shuttle being connected to a high pres |
| 5171546 |
Use of thioether ligands for separating palladium from aqueous solutions and in particular nitri |
December 15, 1992 |
| The invention relates to the use of thioether ligands in accordance with the formula: ##STR1## in which R.sup.1 and R.sup.2, which can be the same or different, represent alkyl radicals, R.sup.3 is an alkyl radical and A represents a divalent radical chosen from among the radical |
| 5171263 |
Cardiac valve with flaps pivoting on balls |
December 15, 1992 |
| A cardiac valve comprises a ring, one or more flaps, the pivoting axis of the latter including two balls partly extending into a ring cavity and a conical flap cavity. This arrangement improves the life of the valve by reducing wear, stresses, friction and facilitates the assembly thereo |
| 5141378 |
Mobile intervention chamber providing access to an installation placed in an active cell |
August 25, 1992 |
| So as to be able to carry out various operations, especially for cleaning observation and simple interventions, on an installation placed in an active cell, the present invention provides a mobile intervention chamber including a caisson (40) adapted to be docked on an access orifice for |
| 4996019 |
Storage container for radioactive waste |
February 26, 1991 |
| In order to ensure a good seal and a good resistance to shocks and corrosion, without increasing their cost, radioactive waste storage containers are completely made from metal fiber-reinforced concrete. This material is used for producing by molding a drum (210) and a cover (212), a |
| 4767136 |
Tight coupling device for two rigid, fixed pipes |
August 30, 1988 |
| The device for coupling two pipes comprises a variable length assembly formed from two tubular parts, whereof the internal diameter corresponds to the internal diameter of the pipes. The tight coupling of this assembly to the ends of the pipes is brought about by compressing O-rings betw |
| 4735028 |
Earthquake-resistant, removable partition |
April 5, 1988 |
| In order to seal an opening formed in a vertical wall, a removable partition is formed, which is constituted by at least two dry-stacked brick layers. Each layer is formed from several rows of bricks, each constituted by bricks which, in cross-section, are shaped like a parallelogram |
| 4643328 |
Device for the tight connection of two enclosures |
February 17, 1987 |
| The device is applicable to the connection of two enclosures, each having a door closing and opening formed in a flange. One of the doors supports a rotary control member having three series of slots forming cams. V-shaped levers articulated to the doors simultaneously cooperate with slo |
| 4619572 |
Transfer device with a double tight barrier between a container and a confinement enclosure |
October 28, 1986 |
| A transfer device between a container and a confinement enclosure comprises a chamber having an opening issuing to the outside and an opening issuing into the enclosure. These openings are closed by doors constituting with an external door and an internal door of the container, to double |
