Patents Assigned to Engelhard-CLAL
  • Metallurgically bonded layered article having a curved surface
    Patent number: 6955288
    Abstract: A layered article having a curved surface made of a supporting metal metallurgically bonded to a supported metal.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: October 18, 2005
    Assignees: E. I. du Pont de Nemours and Company, Engelhard-CLAL
    Inventors: John James Barnes, Joseph Gerard Biondo, Peter Gideon Gelblum, Richard Delbert Lanam, Charles Joseph Noelke, David Archer Wells
  • Metallurgically bonded layered article having a curved surface
    Patent number: 6777110
    Abstract: A layered article having a curved surface made of a supporting metal metallurgically bonded to a supported metal.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: August 17, 2004
    Assignees: E. I. du Pont de Nemours and Company, Engelhard-CLAL
    Inventors: John James Barnes, Joseph Gerard Biondo, Peter Gideon Gelblum, Richard Delbert Lanam, Charles Joseph Noelke, David Archer Wells
  • Process for manufacturing precious metal artifacts
    Patent number: 6383248
    Abstract: A wedding ring is manufactured by a process comprising the production of a metal powder by the atomizing of a stream of molten precious metal, for example a gold alloy, the compaction of the metal powder into a hollow cylindrical body, the sintering of the compacted body, optionally the compression of the sintered body into a more toroidal shape, optionally the sintering of the toroidal body and the subjecting of the body to ring-rolling and annealing. The powder that is compacted any also comprise a minor proportion of precious-metal powder obtained by means other than atomization. The process may also be applied to the manufacture of artifacts other than rings by compacting the powder into an appropriate shape and modifying the compressing step, if employed, as appropriate to the intended product; in such embodiments, the ring-rolling step may be replaced by an appropriate step of further modifying the shape and/or dimension of the body. or may be omitted entirely.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: May 7, 2002
    Assignee: Engelhard-CLAL UK Ltd.
    Inventors: Terence Ernest Taylor, Stephen Paul Hurford
  • Bushing base with mounted nozzles
    Patent number: 6221506
    Abstract: The invention relates to a method of manufacturing a bushing baseplate, and to a bushing baseplate. The bushing baseplate is characterized in that it comprises tips (18) constituted by hollow tubular elements of outside diameter slightly smaller than the inside diameter of holes (16) in the plate (12) forming the bushing baseplate, which tips are subjected to a step of being expanded radially relative to their axes. The method is simpler and less expensive.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: April 24, 2001
    Assignee: Engelhard-CLAL S.A.S.
    Inventors: Jean-Paul Guerlet, Franck Pouliquen, Daniel Michel
  • Wires incorporating a helical component, assemblies thereof, and use of said assemblies as catalyzer and/or to recover precious metals
    Patent number: 5699680
    Abstract: A wire comprising at least one helically wound wire element is disclosed. The helical winding consists of a platinoid or platinoid alloy wire (20). Also disclosed are assemblies of these wires (20) such as knitted materials, fabrics and felts, and the use of said assemblies as catalysers in the reaction for preparing nitric or cyanhydric acid, and to recover precious metals from these catalysers.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: December 23, 1997
    Assignee: Engelhard-Clal SAS
    Inventors: Jean-Paul Guerlet, Claude Lambert