Patents by Inventor Catherine Fontaine

Catherine Fontaine 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-retarder and its application to concrete, mortars and/or grouts
    Patent number: 5976242
    Abstract: A hydraulic-cement setting retarder included in concrete, mortars, or grouts to control setting time as a function of the retarder dosage. Specifically, the retarder is a cyclic amino resin of formula (I): ##STR1## where (a) R1 is a hydrogen atom, a hydroxymethal radial or a group of formula (II)CH.sub.2 --O--R (II)(b) R.sub.2 is a group of formula (II),(c) R is a linear or branched C1-C4 alkyl radical, or a group of formula (III) ##STR2## (d) R.sub.3 and R.sub.4 each are a hydrogen atom, and C1-C4 linear or branched alkyl radical or a group of formula (III).
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: November 2, 1999
    Assignee: Axim
    Inventors: Alain Blanc, Catherine Fontaine
  • Milling agent for cements
    Patent number: 5626666
    Abstract: A cement milling agent characterized in that it is composed essentially of sugar-syrup derivatives prepared by oxidizing and hydrogenating said sugar syrups.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: May 6, 1997
    Assignee: Ciments Francais
    Inventors: Jean Briat, Catherine Fontaine