Patents by Inventor Axel Altmann

Axel Altmann 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).

  • Treatment of polysaccarides with dialdehydes
    Patent number: 9187572
    Abstract: A process for treating a polysaccharide with a dialdehyde in the presence of from 10 to 40 weight percent of water, based on the total weight of polysaccharide and water, is beneficially conducted in a mixing device characterized by a FROUDE number FRw of larger than 11, wherein ?w is the angular frequency in sec-1 and is defined as 2*?*RPM/60, RPM is the rotational speed of the mixing device in revolutions per minute, Rw is the radius of the mixing device in m, and g is the acceleration due to gravity in m/s2.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: November 17, 2015
    Inventors: Alexandra Hild, Matthias Sprehe, Axel Altmann, Roland Adden
  • TREATMENT OF POLYSACCARIDES WITH DIALDEHYDES
    Publication number: 20130172290
    Abstract: A process for treating a polysaccharide with a dialdehyde in the presence of from 10 to 40 weight percent of water, based on the total weight of polysaccharide and water, is beneficially conducted in a mixing device characterized by a FROUDE number FRw of larger than 11, wherein ?w is the angular frequency in sec-1 and is defined as 2*?*RPM/60, RPM is the rotational speed of the mixing device in revolutions per minute, Rw is the radius of the mixing device in m, and g is the acceleration due to gravity in m/s2.
    Type: Application
    Filed: September 15, 2011
    Publication date: July 4, 2013
    Applicant: Dow Global Technologies LLC
    Inventors: Alexandra Hild, Matthias Sprehe, Axel Altmann, Roland Adden
  • Process for shaping cellulose ethers
    Publication number: 20060205935
    Abstract: The present invention relates to a process for the manufacture of cellulose ethers. The process involves: (a) providing a perforated disk having a plurality of perforations; and (b) forcing feed cellulose ether through at least some of the perforations of the perforated disk, thereby forming compressed cellulose ether. The compressed cellulose ether formed in accordance with the method of the present invention has a higher bulk density and a more uniform particle size distribution than known cellulose ethers prepared by other processes.
    Type: Application
    Filed: January 30, 2006
    Publication date: September 14, 2006
    Inventors: Alexandra Hild, Marc Schmidt, Axel Altmann, Benedikt Langer, Wilhelm Oppermann, Bernd Schriewer, Heiko Thielking