Patents by Inventor Holger WONDRACZEK

Holger WONDRACZEK 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 EXTRACTING XYLAN COMPOUNDS FROM COMMINUTED WOOD COMPONENTS
    Publication number: 20230066973
    Abstract: The invention relates to a process for extracting xylan compounds from comminuted wood components using hydrothermal extraction, wherein the hydrothermal extraction is carried out in a fixed-bed reactor with rapid circulation.
    Type: Application
    Filed: January 13, 2021
    Publication date: March 2, 2023
    Inventor: Holger Wondraczek
  • Polysaccharide derivatives as optical brightening agents
    Patent number: 10988716
    Abstract: Provided herein are polysaccharide derivatives substituted (a) at a degree of substitution (DS1) of at least 0.05 by a fluorescent group (FG) having a mono or polycyclic ring system including at least one heteroatom selected from N, O and S and conjugated double bonds, and having an absorption band in the UV region of light and an emission band in the visible region of light, and bonded via a first linker to any one of the native functional groups of the polysaccharide repeating units; and (b) at a degree of substitution (DS2) of at least 0.05 by a charged group (CG) bonded via a second linker to any one of the native functional groups of the polysaccharide repeating units.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: April 27, 2021
    Assignee: ABO AKADEMI UNIVERSITY
    Inventors: Pedro Fardim, Thomas Heinze, Holger Wondraczek, Olga Gabova
  • Process for the functionalization of a surface
    Patent number: 10233260
    Abstract: A functionalization is performed with a dissolved oligo- or polysaccharide derivative which contains at least one free functional group, especially an amino group, linked through a polar carbamate linkage and a spacer (X), according to the general formula I:
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: March 19, 2019
    Assignee: FZMB GMBH Forschungszentrum Fuer Medizintechnik Und Biotechnologie
    Inventors: Thomas Heinze, Holger Wondraczek, Thomas Elschner, Friedrich Scholz
  • POLYSACCHARIDE DERIVATIVES AS OPTICAL BRIGHTENING AGENTS
    Publication number: 20190002801
    Abstract: Provided herein are polysaccharide derivatives substituted (a) at a degree of substitution (DS1) of at least 0.05 by a fluorescent group (FG) having a mono or polycyclic ring system including at least one heteroatom selected from N, O and S and conjugated double bonds, and having an absorption band in the UV region of light and an emission band in the visible region of light, and bonded via a first linker to any one of the native functional groups of the polysaccharide repeating units; and (b) at a degree of substitution (DS2) of at least 0.05 by a charged group (CG) bonded via a second linker to any one of the native functional groups of the polysaccharide repeating units.
    Type: Application
    Filed: March 21, 2017
    Publication date: January 3, 2019
    Applicant: Åbo Akademi University
    Inventors: Pedro FARDIM, Thomas HEINZE, Holger WONDRACZEK, Olga GABOVA
  • PROCESS FOR THE FUNCTIONALIZATION OF A SURFACE
    Publication number: 20160009825
    Abstract: It was the object to perform surface functionalization with as low as possible a procedural effort and without deleterious side effects, wherein the functionalized surface is to have a permanent chemical activity and a high degree of substitution (DS) of higher than 1.
    Type: Application
    Filed: March 20, 2014
    Publication date: January 14, 2016
    Applicant: fzmb GmbH Forschungszentrum fuer Medizintechnik und Biotechnologie
    Inventors: Thomas HEINZE, Holger WONDRACZEK, Thomas ELSCHNER, Friedrich SCHOLZ