Patents by Inventor Marcel Capaul

Marcel Capaul 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).

  • Fiber-reinforced cement-like material
    Patent number: 4199366
    Abstract: The present invention provides for a novel fiber-reinforced cement-like material which is characterized by having short polyvinyl alcohol fibers in an amount of at least 2 volume % based on the total volume of said material. These fibers have an elongation at break of between about 4 and 8% and a modulus of more than 130 g/dtex. A process for the preparation of said material is also disclosed.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: April 22, 1980
    Assignee: Inventa AG fur Forschung und Patentverwertung
    Inventors: Peter Schaefer, Marcel Capaul, Wolfgang Griehl, Peter Meier
  • Process for producing hydrolysis-stable shaped structures of polyester
    Patent number: 4144285
    Abstract: A process is disclosed for treating polyester material with at least one N-glycidylimide compound which results in reducing the terminal carboxyl group content of the polyester material.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: March 13, 1979
    Assignee: Inventa AG Fur Forschung und Patent-verwertung, Zurich
    Inventors: Max Maschek, Marcel Capaul, Wolfgang Griehl