Patents by Inventor Harry Schleicher

Harry Schleicher 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 of preparing a cellulose carbamate solution
    Patent number: 6590095
    Abstract: The present invention concerns a method of preparing a cellulose carbamate solution by dissolving cellulose carbamate in sodium hydroxide solution at temperatures of <10° C., wherein an 8% to 15% cellulose carbamate solution with a sodium hydroxide concentration of 7% to 12% is prepared in a first step, and then the solution is adjusted to a sodium hydroxide concentration of <9% by diluting with dilute sodium hydroxide solution and/or water in a second step, with the provision that the weight ratio of cellulose carbamate to sodium hydroxide in both steps is >1.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: July 8, 2003
    Assignee: Zimmer A.G.
    Inventors: Harry Schleicher, Bodo Borrmeister, Hermann Lang
  • Method of manufacturing cellulose solutions in aqueous amino oxide
    Patent number: 5760211
    Abstract: The invention relates to a method of manufacturing cellulose solutions whereby cellulose is dispersed in an aqueous amino oxide solution and is treated with xylanase or enzyme mixtures containing xylanase.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: June 2, 1998
    Assignee: Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V.
    Inventors: Harry Schleicher, Peter Weigel, Hendrik Wetzel