Patents by Inventor Gerhard Herman BOUWHUIS

Gerhard Herman BOUWHUIS 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).

  • METHOD FOR PRODUCING REGENERATED CELLULOSE FIBERS FROM COTTON CONTAINING TEXTILE WASTE
    Publication number: 20190338466
    Abstract: The invention relates to a method for regenerating cellulose fibers from cotton-containing textile, wherein the degree of polymerization (DP) of cellulose in cotton is reduced by using a DP decreasing agent, which is an endo-cellulase of the type EC Number 3.2.1.4, together with mechanical energy. The DP of cellulose in cotton is reduced to under 1500, which makes it particularly suitable for the following steps, especially the spinning step. The cellulose is further dissolved using cellulose solvent comprising NMMO or an aqueous mixture of NMMO and the obtained cellulose-containing liquid is subjected to a spinning process to produce cellulose fibers.
    Type: Application
    Filed: February 1, 2017
    Publication date: November 7, 2019
    Inventors: Gerrit Johannes BRINKS, Gerhard Herman BOUWHUIS, Pramodkumar Bhagwandas AGRAWAL, Hendrik GOOIJER, Jens Josef OELERICH