Patents by Inventor Martin Lersch

Martin Lersch 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).

  • Publication number: 20220090155
    Abstract: The present invention relates to a method for increasing the rate of enzymatic hydrolysis of a polysaccharide substrate, said method comprising at least one step of: enzymatic hydrolysis of said substrate with a mixture of enzymes, said mixture comprising at least one enzyme selected from lytic polysaccharide monooxygenases; in the presence of chemically modified lignin, wherein during at least part of the time of said step of enzymatic hydrolysis, H2O2 is supplied to the reaction mixture comprising said substrate, said mixture of enzymes and said chemically modified lignin, either from an external source or by generation in situ.
    Type: Application
    Filed: February 14, 2020
    Publication date: March 24, 2022
    Inventors: Oskar Bengtsson, Martin Lersch, Anne Mari Kløften
  • Patent number: 10648008
    Abstract: The present invention relates to a process for the production of second generation biofuels and/or sugar based chemicals—for example ethanol, butanol etc—and/or materials—for example plastics, single cell proteins etc.—together with sulfonated lignin from lignocellulosic biomass, in particular from lignocellulosic biomass comprising, among others, annual plants, agricultural waste, or wood. In particular, the present invention relates to a process for the production of sugar based chemicals, biofuels or materials together with sulfonated lignin from lignocellulosic biomass comprising the pretreatment of a lignocellulosic biomass in a sulfite cooking step.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: May 12, 2020
    Assignee: Borregaard Industries, Limited, Norge
    Inventors: Anders Sjoede, Anders Froelander, Martin Lersch, Gudbrand Roedsrud
  • Patent number: 9193982
    Abstract: The present invention relates to a continuous process for the enzymatic hydrolysis of cellulosic biomass and to an apparatus for conducting said process. According to the present invention, a steady state is achieved in a reactor in regard to the hydrolysis reaction. Therein, cellulosic biomass of a high total solids content (preferably 10% or higher, further preferably between 15 and 30%) is continually added to said reactor, while at least partially hydrolyzed cellulosic biomass is continually removed from said reactor. The steady state is adjusted, i.e. the amount of cellulosic biomass added and the amount of at least partially hydrolyzed cellulosic biomass removed is adjusted, so that the retention time of a given portion of added cellulosic biomass in the reactor is longer than its “liquefaction time”, i.e. the time period required to transform a solid slurry into a pumpable liquid during hydrolysis, i.e.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: November 24, 2015
    Assignee: BORREGAARD AS
    Inventors: Anders Sjoede, Anders Froelander, Martin Lersch, Gudbrand Roedsrud, Kristin Hals, Anne Mari Kloeften, Lennart Delin, Mats H Johansson
  • Publication number: 20130217074
    Abstract: The present invention relates to a continuous process for the enzymatic hydrolysis of cellulosic biomass and to an apparatus for conducting said process. According to the present invention, a steady state is achieved in a reactor in regard to the hydrolysis reaction. Therein, cellulosic biomass of a high total solids content (preferably 10% or higher, further preferably between 15 and 30%) is continually added to said reactor, while at least partially hydrolyzed cellulosic biomass is continually removed from said reactor. The steady state is adjusted, i.e. the amount of cellulosic biomass added and the amount of at least partially hydrolyzed cellulosic biomass removed is adjusted, so that the retention time of a given portion of added cellulosic biomass in the reactor is longer than its “liquefaction time”, i.e. the time period required to transform a solid slurry into a pumpable liquid during hydrolysis, i.e.
    Type: Application
    Filed: June 16, 2011
    Publication date: August 22, 2013
    Applicant: BORREGAARD AS
    Inventors: Anders Sjoede, Anders Froelander, Martin Lersch, Gudbrand Roedsrud, Kristin Hals, Anee Mari Kloeften, Lennart Delin, Mats H. Johansson
  • Publication number: 20110250638
    Abstract: The present invention relates to a process for the production of second generation biofuels and/or sugar based chemicals—for example ethanol, butanol etc—and/or materials—for example plastics, single cell proteins etc.—together with sulfonated lignin from lignocellulosic biomass, in particular from lignocellulosic biomass comprising, among others, annual plants, agricultural waste, or wood. In particular, the present invention relates to a process for the production of sugar based chemicals, biofuels or materials together with sulfonated lignin from lignocellulosic biomass comprising the pretreatment of a lignocellulosic biomass in a sulfite cooking step.
    Type: Application
    Filed: December 16, 2009
    Publication date: October 13, 2011
    Applicant: BORREGAARD INDUSTRIES LIMITED, NORGE
    Inventors: Anders Sjoede, Anders Froelander, Martin Lersch, Gudbrand Roedsrud