Patents by Inventor Alain Grimaud

Alain Grimaud has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Plasma producing gas for plasma projection of metallic oxide
    Patent number: 5271869
    Abstract: The plasma producing gas consists of a ternary mixture of helium, argon and hydrogen and contains at least about 10% hydrogen, typically 30 to 70% helium, 10 to 50% argon and 10 to 25% hydrogen, preferably 20% (.+-.5%) hydrogen. Use for the plasma projection of metallic oxide.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: December 21, 1993
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Daniel Nicoud, Jean-Martial Leger, Pierre Fauchais, Alain Grimaud
  • Floor with co-operation between wood and concrete
    Patent number: 4841703
    Abstract: A concrete slab (8) is cast over wooden beams (2) and is connected to the beams by metal connector tubes (14) of circular section, each of which is embedded at one end by being forced into a circular groove provided for the purpose in a beam and at its other end in the slab by virtue of the concrete being cast thereover. The invention is applicable to building or converting buildings and also to works such as gangways and bridges.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: June 27, 1989
    Assignee: Enterprise Paris Quest
    Inventor: Alain Grimaud