Patents by Inventor Erika Barbosa Neves Graminha

Erika Barbosa Neves Graminha 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 Enhancing Paper Strength
    Publication number: 20140116635
    Abstract: Methods of making paper or paperboard having enhanced dry strength are provided. An enzyme and a polymer including at least one of a cationic water-soluble polymer and an amphoteric water-soluble polymer can be added to a papermaking pulp to yield a treated pulp. The treated pulp can then be formed into paper or paperboard having a dry strength greater than paper or paperboard formed from papermaking pulp without the addition of the enzyme and polymer. Any suitable enzyme can be used, for example, a laccase or a cellulase. Any suitable polymer can be used. For example, at least one of a glyoxylated polyacrylamide (gPAM), a polyvinylamine, a decarboxylated polyacrylamide, and a dimethylamine-epichlorohydrin (epi-DMA).
    Type: Application
    Filed: September 11, 2013
    Publication date: May 1, 2014
    Applicant: Buckman Laboratories International, Inc.
    Inventors: Rita De Cassia Bortoto Porto, Erika Barbosa Neves Graminha, Juliano Lopes Dos Santos, Tiago Pereira Goncalves