Patents by Inventor Enrique M. Andreu

Enrique M. Andreu 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).

  • Aromatic thermotropic copolyesteramide
    Patent number: 4966956
    Abstract: A novel copolyesteramide made up of monomeric units of formula I to IV in molar proportions of 40-60% of I, 10-20% of II, 1-12% of III and 15-30% of IV are obtained by polymerizing the corresponding monomers in molten or dissolved state, in an inert atmosphere, during a period of time between 2 and 18 hours and a temperature between 220.degree. and 350.degree. C.The product is useful in the preparation of filaments with high tensile strenght and high tensile modulus, as well as for the preparation of products molded by extrusion or injection and also for the preparation of films.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: October 30, 1990
    Assignee: Cables de Comunicaciones, S.A.
    Inventors: Enrique M. Andreu, Fernando N. Gomez, Jose L. R. Vallejo, Jose L. S. Ostariz