Patents by Inventor Carlos A. Goncalves

Carlos A. Goncalves 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).

  • Paper size mixtures
    Patent number: 5498648
    Abstract: Paper size mixtures which are prepared by mixing an aqueous suspension of a digested cationic starch with a finely divided, aqueous polymer dispersion which is the paper size and emulsifying the C.sub.14 -C.sub.22 -alkyldiketene in this mixture at not less than 70.degree. C. are used for engine and surface sizing of the paper.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: March 12, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Arnold de Clercq, Roland Ettl, Carlos A. Goncalves, Lothar Hoehr, Andreas Hohmann, Ulrich Riebeling