Patents by Inventor Marcio S. Carvalho

Marcio S. Carvalho 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).

  • Methods for curtain coating substrates
    Patent number: 11369988
    Abstract: Methods of curtain coating substrates are disclosed. In some embodiments, the methods include applying two or more liquid layers simultaneously to a substrate, wherein the multiple layers include a bottom liquid layer comprising a shear thinning liquid, and another liquid layer comprising a viscoelastic liquid. In some embodiments, the disclosed methods include formulating a bottom layer liquid comprising a shear thinning liquid, formulating another layer liquid comprising a viscoelastic liquid, pumping the bottom layer liquid and the other layer liquid through coating dies simultaneously and onto a moving substrate such that the bottom layer liquid impinges on the substrate thereby forming a bottom layer, and the other layer liquid forms another liquid layer above the bottom liquid layer. The inclusion of a bottom liquid layer comprising a shear thinning liquid and other layer comprising a viscoelastic liquid provides for enlargement of the curtain coating window.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: June 28, 2022
    Assignees: DOW GLOBAL TECHNOLOGIES LLC, REGENTS OF THE UNIVERSITY OF MINNESOTA, ROHM AND HAAS COMPANY
    Inventors: Alireza Mohammad Karim, Saswati Pujari, Wieslaw J. Suszynski, Lorraine F. Francis, Marcio S. Carvalho, Vinita Yadav
  • METHODS FOR CURTAIN COATING SUBSTRATES
    Publication number: 20210016317
    Abstract: Methods of curtain coating substrates are disclosed. In some embodiments, the methods include applying two or more liquid layers simultaneously to a substrate, wherein the multiple layers include a bottom liquid layer comprising a shear thinning liquid, and another liquid layer comprising a viscoelastic liquid. In some embodiments, the disclosed methods include formulating a bottom layer liquid comprising a shear thinning liquid, formulating another layer liquid comprising a viscoelastic liquid, pumping the bottom layer liquid and the other layer liquid through coating dies simultaneously and onto a moving substrate such that the bottom layer liquid impinges on the substrate thereby forming a bottom layer, and the other layer liquid forms another liquid layer above the bottom liquid layer. The inclusion of a bottom liquid layer comprising a shear thinning liquid and other layer comprising a viscoelastic liquid provides for enlargement of the curtain coating window.
    Type: Application
    Filed: January 28, 2019
    Publication date: January 21, 2021
    Inventors: Alireza Mohammad Karim, Saswati Pujari, Wieslaw J. Suszynski, Lorraine F. Francis, Marcio S. Carvalho, Vinita Yadav