Patents by Inventor Knut Stengel

Knut Stengel 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).

  • Multifunctional coating films that can be applied in liquid form
    Patent number: 9683124
    Abstract: Multifunctional coating films that can be applied in liquid form are provided for compressing, sealing, covering and preserving surfaces. The films include a composition of polysaccharide materials and/or homo- or heteroglycan water-soluble polysaccharide derivatives, polyol spacers, and crosslinkers with carbonyl or carboxylic function(s). As-applied, the composition is water-soluble and reactive, but after hardening it is capable of absorbing water or swelling, impermeable to water vapour, stable against water and UV and can be biologically degraded in a controlled manner. By reacting polysaccharide materials, polysaccharide derivatives and polyol spacers with cross linkers having carbonyl or carboxylic function(s), mechanically stable flexible films are obtained, which retain their mechanical properties up to a foreign material content of 80%.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: June 20, 2017
    Assignee: THUERINGISCHES INSTITUT FUER TEXTIL-UND KUNSTSTOFF-FORSCHUNG E.V.
    Inventors: Jens Schaller, Knut Stengel, Frank Meister, Sabine Riede
  • MULTIFUNCTIONAL COATING FILMS THAT CAN BE APPLIED IN LIQUID FORM
    Publication number: 20150079291
    Abstract: Multifunctional coating films that can be applied in liquid form are provided for compressing, sealing, covering and preserving surfaces. The films include a composition of polysaccharide materials and/or homo- or heteroglycan water-soluble polysaccharide derivatives, polyol spacers, and crosslinkers with carbonyl or carboxylic function(s). As-applied, the composition is water-soluble and reactive, but after hardening it is capable of absorbing water or swelling, impermeable to water vapour, stable against water and UV and can be biologically degraded in a controlled manner. By reacting polysaccharide materials, polysaccharide derivatives and polyol spacers with cross linkers having carbonyl or carboxylic function(s), mechanically stable flexible films are obtained, which retain their mechanical properties up to a foreign material content of 80%.
    Type: Application
    Filed: March 27, 2013
    Publication date: March 19, 2015
    Inventors: Jens Schaller, Knut Stengel, Frank Meister, Sabine Reide