Patents by Inventor Marie-Louise Wallberg

Marie-Louise Wallberg 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).

  • Image analysis based process control of processes for production of sugar from lignocellulosic biomass
    Patent number: 9580763
    Abstract: There is provided a method of producing a hydrolysate containing sugar from a lingocellulosic biomass, comprising the steps of: a) pretreating the lingocellulosic biomass in a pretreatment process to form a slurry comprising cellulosic particles; b) saccharification of the slurry obtained in step a) in the presence of hydrolytic enzymes in an enzymatic hydrolysis process to obtain a hydrolysate containing sugar; c) analyzing cellulosic particles present in the slurry obtained in step a) and/or cellulosic particles present in the enzymatic hydrolysis process during step b) using an image analysis method to obtain a data set; and d) controlling at least one process parameter of the pretreatment process in step a) and/or enzymatic hydrolysis process in step b) in response to the data set obtained in step c). A corresponding system is also provided.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: February 28, 2017
    Assignee: SEKAB E-Technology AB
    Inventors: Marie-Louise Wallberg, Elias Sundvall
  • FILLER FOR PAPERMAKING PROCESS
    Publication number: 20160010280
    Abstract: The present invention relates to a filler comprising calcium salt and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the filler is substantially free from fibres or fibrils of cellulose or lignocellulose. The invention also relates to a filler comprising calcium salt and a cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the cellulose derivative contains cationic groups.
    Type: Application
    Filed: September 17, 2015
    Publication date: January 14, 2016
    Inventors: Peter Marten van der Horst, Erik Sanne, Kjell Rune Andersson, Cherryleen Garcia-Lindgren, Marie-Louise Wallberg, Sune Wännström
  • IMAGE ANALYSIS BASED PROCESS CONTROL OF PROCESSES FOR PRODUCTION OF SUGAR FROM LIGNOCELLULOSIC BIOMASS
    Publication number: 20150361512
    Abstract: There is provided a method of producing a hydrolysate containing sugar from a lingocellulosic biomass, comprising the steps of: a) pretreating the lingocellulosic biomass in a pretreatment process to form a slurry comprising cellulosic particles; b) saccharification of the slurry obtained in step a) in the presence of hydrolytic enzymes in an enzymatic hydrolysis process to obtain a hydrolysate containing sugar; c) analyzing cellulosic particles present in the slurry obtained in step a) and/or cellulosic particles present in the enzymatic hydrolysis process during step b) using an image analysis method to obtain a data set; and d) controlling at least one process parameter of the pretreatment process in step a) and/or enzymatic hydrolysis process in step b) in response to the data set obtained in step c). A corresponding system is also provided.
    Type: Application
    Filed: January 21, 2014
    Publication date: December 17, 2015
    Inventors: Marie-Louise Wallberg, Elias Sundvall
  • Filler for papermaking process
    Patent number: 9156990
    Abstract: The present invention relates to a filler comprising calcium salt and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the filler is substantially free from fibers or fibrils of cellulose or lignocellulose. The invention also relates to a filler comprising calcium salt and a cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the cellulose derivative contains cationic groups.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: October 13, 2015
    Assignee: EKA CHEMICALS AB
    Inventors: Peter Marten Van Der Horst, Erik Sanne, Kjell Rune Andersson, Cherryleen Garcia-Lindgren, Marie-Louise Wallberg, Sune Wännström
  • Filler for papermaking process
    Publication number: 20050155520
    Abstract: The present invention relates to a filler comprising calcium salt and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the filler is substantially free from fibres or fibrils of cellulose or lignocellulose. The invention also relates to a filler comprising calcium salt and a cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the cellulose derivative contains cationic groups.
    Type: Application
    Filed: December 21, 2004
    Publication date: July 21, 2005
    Inventors: Peter Van Der Horst, Erik Sanne, Kjell Andersson, Cherryleen Garcia-Lindgren, Marie-Louise Wallberg, Sune Wannstrom