Patents by Inventor Hedda Weber

Hedda Weber 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).

  • Cellulose powder and processes for its production
    Patent number: 9163095
    Abstract: The invention relates to a process for producing spherical, non-fibrillar cellulose particles with a particle size in the range of from about 1 ?m to about 400 ?m from a solution of cellulose in which the solution is cooled down to below its solidification temperature wherein it is flowing freely, the solvent is washed out, the solidified cellulose solution is disintegrated to form cellulose powder comprising particles, and the disintegrated and washed out particles are dried. The invention also relates to the cellulose powder and particles made in accordance with the process of the invention.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: October 20, 2015
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Josef Innerlohinger, Gregor Kraft, Hedda Weber, Haio Harms
  • CELLULOSE POWDER AND PROCESSES FOR ITS PRODUCTION
    Publication number: 20110009259
    Abstract: The invention relates to a process for producing spherical, non-fibrillar cellulose particles with a particle size in the range of from about 1 ?m to about 400 ?m from a solution of cellulose in which the solution is cooled down to below its solidification temperature wherein it is flowing freely, the solvent is washed out, the solidified cellulose solution is disintegrated to form cellulose powder comprising particles, and the disintegrated and washed out particles are dried. The invention also relates to the cellulose powder and particles made in accordance with the process of the invention.
    Type: Application
    Filed: September 12, 2008
    Publication date: January 13, 2011
    Applicant: Lenzing AG
    Inventors: Josef Innerlohinger, Gregor Kraft, Hedda Weber, Haio Harms