Patents by Inventor Noel Le Bourt

Noel Le Bourt 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).

  • Novolaks of the phenol-dense aldehyde type
    Patent number: 5412058
    Abstract: New formaldehyde-phenol resins of the novolak type comprising aliphatic aldehyde radicals with 6 or more carbon atoms and with the molar ratio between these heavy aldehyde radicals and the phenolic structures being between 0.9 and 1.2. They are obtained by the condensation of phenols with aldehyde compounds containing at least 543% heavy aldehydes in the presence of acid catalysts in a virtually anhydrous medium. Application to the reinforcement of vulcanized rubbers.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: May 2, 1995
    Assignee: CECA S.A.
    Inventors: Thierry Dreyfus, Noel Le Bourt