Patents by Inventor Philippe Leture

Philippe Leture 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).

  • Setting and hardening accelerating agent for siliceous hydraulic binders
    Patent number: 5709743
    Abstract: Setting and hardening accelerating agent for siliceous hydraulic binders wherein: a) it is obtained by hydration, in the usual pressure and temperature conditions, and grinding of a siliceous hydraulic binder aqueous suspension; b) the suspension particles are sufficiently fine for the agent to meet the following test requirements: an aqueous suspension in a sedimentation specimen at 20.degree. C., containing 10 grams (dry weight) of the accelerating agent in 100 ml of water, must have a sedimentation deposit height at least equal to 50% of the initial height at the end of two days; c) it is in the form of an aqueous suspension.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: January 20, 1998
    Assignee: LaFarge
    Inventors: Philippe Leture, Jacques Chappuis, Bruno Latrasse