Patents by Inventor Silke Schuth

Silke Schuth 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 preparing smooth-surface spherical microparticles completely or partially made of at least one water-insoluble linear polysaccharide and microparticles produced according to this method
    Patent number: 6723429
    Abstract: The present invention relates to a method for preparing smooth-surface spherical microparticles which are completely or partially made of at least one water-insoluble linear polysaccharide. This method involves dissolving the at least one water-insoluble linear polysaccharide in a solvent or a mixture of solvents, introducing the solution into a precipitation agent or a mixture of precipitation agents, optionally cooling the mixture thus obtained, and separating the microparticles thus formed. The precipitation agent used consists of at least one water-soluble cellulose derivative. This invention also relates to microparticles obtained according to this method.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: April 20, 2004
    Assignee: Celanese Ventures GmbH
    Inventors: Holger Bengs, Jürgen Grande, Silke Schuth, Gitte Böhm, Arnold Schneller, Anette Brunner
  • Slow release tablet prepared from linear water-insoluble polysacchrides
    Patent number: 6592897
    Abstract: The invention relates to a controlled release tablet which in part or as a whole contains water-insoluble linear polysaccharides, preferably the polysaccharide poly(1,4-&agr;-D-glucan), in the form of microparticles, as retardation material. The tablet is also capable of controllably releasing an active agent.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: July 15, 2003
    Assignee: Axiva GmbH
    Inventors: Holger Bengs, Silke Schuth, Jürgen Grande, Gitte Böhm, Arnold Schneller
  • Cosmetic or medical preparation for topical use
    Patent number: 6548075
    Abstract: The present invention relates to a topical preparation containing spherical microparticles as the essential component, wherein the microparticles comprise water-insoluble linear polyglucan.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: April 15, 2003
    Assignee: Celanese Ventures GmbH
    Inventors: Holger Bengs, Arnold Schneller, Jürgen Grande, Silke Schuth, Gitte Böhm, Alfred Braunagel
  • Water-insoluble linear polysaccharides for filtration
    Publication number: 20020074283
    Abstract: The invention relates to the use of water-insoluble, linear polysaccharides as a filtering agent, to a method for producing said filtering agent and to a filtering device. The inventive filtering agent have a high capacity for absorption and retention.
    Type: Application
    Filed: July 26, 2001
    Publication date: June 20, 2002
    Inventors: Holger Bengs, Gitte Bohm, Jurgen Grande, Silke Schuth
  • Method for preparing smooth-surface spherical microparticles completely or partially made of at least one water-insoluble linear polysaccharide and microparticles produced according to this method
    Publication number: 20010051716
    Abstract: The present invention relates to a method for preparing smooth-surface spherical microparticles which are completely or partially made of at least one water-insoluble linear polysaccharide. This method involves dissolving the at least one water-insoluble linear polysaccharide in a solvent or a mixture of solvents, introducing the solution into a precipitation agent or a mixture of precipitation agents, optionally cooling the mixture thus obtained, and separating the microparticles thus formed. The precipitation agent used consists of at least one water-soluble cellulose derivative. This invention also relates to microparticles obtained according to this method.
    Type: Application
    Filed: February 28, 2001
    Publication date: December 13, 2001
    Inventors: Holger Bengs, Jurgen Grande, Silke Schuth, Gitte Bohm, Arnold Schneller, Anette Brunner
  • Thermoplastic mixtures containing dialdehyde starch and natural polymers
    Patent number: 6313105
    Abstract: Homogeneous mixtures are described and can be processed to give shaped biodegradable and physiologically nonhazardous articles, such as packagings for food or drink or pharmaceutical products, sausage casings and the like. The mixtures comprise dialdehyde starch with a degree of oxidation of greater than 30%, starch which does not exhibit any iodine-starch reaction, and/or modified starch, water and other plasticizers, and also, if desired, other biopolymers and additives.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: November 6, 2001
    Assignee: Aventis Research and Technologies GmbH & Co KG
    Inventors: Holger Bengs, Arnold Schneller, Gitte Böhm, Silke Schuth, Jürgen Grande