Patents by Inventor Christian DAHLSTRAND

Christian DAHLSTRAND 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).

  • LIGNIN ESTERIFIED WITH A MIXTURE OF SATURATED AND UNSATURATED FATTY ACIDS
    Publication number: 20230295206
    Abstract: The present invention relates to a composition of functionalized lignin where the composition exhibits a good stability and where the composition may be used for preparing fuels. The invention further relates a method of preparing the composition.
    Type: Application
    Filed: June 30, 2021
    Publication date: September 21, 2023
    Applicant: REN FUEL K2B AB
    Inventors: Amalia ÖST, Moa SUNDÉN, Joakim LÖFSTEDT, Joseph SAMEC, Christian DAHLSTRAND
  • Continuous production of fuel grade hydrocarbons by hydrotreatment of functionalized lignin
    Patent number: 11319448
    Abstract: The present invention relates to a composition and a method of preparing the composition where the composition comprising functionalized lignin having a weight average molecular weight (Mw) of at least 1,000 g/mol and a green carrier liquid comprising depolymerized functional lignin, wherein the functionalized lignin is dissolved in the green carrier liquid and wherein the amount of depolymerized functionalized lignin compounds in the composition is higher than the amount of functionalized lignin.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: May 3, 2022
    Assignee: REN FUEL K2B AB
    Inventors: Christian Dahlstrand, Joseph Samec
  • COMPOSITION OF ESTERIFIED LIGNIN IN HYDROCARBON OIL
    Publication number: 20200392419
    Abstract: The present invention relates to a composition comprising hydrocarbon oil and substituted lignin, wherein the lignin has been substituted by esterification and acetylation of the hydroxyl groups, wherein the hydroxyl groups are esterified with a C14 or longer fatty acid at a degree of substitution of at least 20%, wherein the hydroxyl groups are acetylated at a degree of substitution of at least 20% and wherein at least 90% of the hydroxyl groups of the lignin is substituted by esterification and acetylation. The composition is essentially free from free fatty acid.
    Type: Application
    Filed: February 25, 2019
    Publication date: December 17, 2020
    Inventors: Joakim LÖFSTEDT, Christian DAHLSTRAND, Alexander OREBOM, Joseph SAMEC
  • Composition comprising esters of lignin and oil or fatty acids
    Patent number: 10781313
    Abstract: The present invention relates to a composition comprising a carrier liquid and lignin or lignin derivatives; wherein at least one of the hydroxyl groups of the biomass have been substituted with ester groups. The composition may be used for preparing fuels or lubricants.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: September 22, 2020
    Inventors: Joseph Samec, Joakim Löfstedt, Christian Dahlstrand, Alexander Orebom, Supaporn Sawadjoon
  • Composition comprising derivatized lignin for fuel production
    Patent number: 10676688
    Abstract: The present invention relates to a composition comprising lignin and a solvent where the lignin is functionalized with an ether group.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: June 9, 2020
    Assignee: REN FUEL K2B AB
    Inventors: Christian Dahlstrand, Alexander Orebom, Joseph Samec, Supaporn Sawadjoon, Joakim Löfstedt
  • CONTINUOUS PRODUCTION OF FUEL GRADE HYDROCARBONS BY HYDROTREATMENT OF FUNCTIONALIZED LIGNIN
    Publication number: 20200109286
    Abstract: The present invention relates to a composition and a method of preparing the composition where the composition comprising functionalized lignin having a weight average molecular weight (Mw) of at least 1,000 g/mol and a green carrier liquid comprising depolymerized functional lignin, wherein the functionalized lignin is dissolved in the green carrier liquid and wherein the amount of depolymerized functionalized lignin compounds in the composition is higher than the amount of functionalized lignin.
    Type: Application
    Filed: March 20, 2018
    Publication date: April 9, 2020
    Applicant: REN FUEL K2B AB
    Inventors: Christian DAHLSTRAND, Joseph SAMEC
  • Ether functionalized lignin for fuel production
    Patent number: 10611884
    Abstract: The present invention relates to a composition comprising lignin and a solvent where the lignin is functionalized with an ether group.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: April 7, 2020
    Assignee: REN FUEL K2B AB
    Inventors: Joseph Samec, Joakim Löfstedt, Alexander Orebom, Christian Dahlstrand, Supaporn Sawadjoon
  • Composition Comprising Esters Of Lignin And Oil Or Fatty Acids
    Publication number: 20190367734
    Abstract: The present invention relates to a composition comprising a carrier liquid and lignin or lignin derivatives; wherein at least one of the hydroxyl groups of the biomass have been substituted with ester groups. The composition may be used for preparing fuels or lubricants.
    Type: Application
    Filed: August 14, 2019
    Publication date: December 5, 2019
    Applicant: Ren Fuel K2B AB
    Inventors: Joseph SAMEC, Joakim LÖFSTEDT, Christian DAHLSTRAND, Alexander OREBOM, Supaporn SAWADJOON
  • Composition comprising esters of lignin and oil or fatty acids
    Patent number: 10421861
    Abstract: The present invention relates to a composition comprising a carrier liquid and lignin or lignin derivatives; wherein at least one of the hydroxyl groups of the biomass have been substituted with ester groups and wherein the carrier liquid is a gas oil. The composition may be used for preparing fuels or lubricants.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: September 24, 2019
    Assignee: REN FUEL K2B AB
    Inventors: Joseph Samec, Joakim Löfstedt, Christian Dahlstrand, Alexander Orebom, Supaporn Sawadjoon
  • ULTRAPURE KRAFT LIGNIN COMPOSITION
    Publication number: 20190241595
    Abstract: The present invention relates to a composition comprising Kraft lignin a very low amount of metal and inorganic compounds. The composition may be used in a refinery process to prepare fuel.
    Type: Application
    Filed: June 30, 2017
    Publication date: August 8, 2019
    Inventors: Christian DAHLSTRAND, Alexander OREBOM
  • Composition Comprising Esters Of Lignin And Oil Or Fatty Acids
    Publication number: 20180319985
    Abstract: The present invention relates to a composition comprising a carrier liquid and lignin or lignin derivatives; wherein at least one of the hydroxyl groups of the biomass have been substituted with ester groups and wherein the carrier liquid is a gas oil. The composition may be used for preparing fuels or lubricants.
    Type: Application
    Filed: June 21, 2018
    Publication date: November 8, 2018
    Applicant: REN FUEL K2B AB
    Inventors: Joseph SAMEC, Joakim LÖFSTEDT, Christian DAHLSTRAND, Alexander OREBOM, Supaporn SAWADJOON
  • CONTINUOUS PRODUCTION OF FUEL GRADE HYDROCARBONS BY HYDROTREATMENT OF FORESTRY BYPRODUCT LIGNIN
    Publication number: 20180265794
    Abstract: The present invention relates to a composition and a method of preparing the composition where the composition comprises lignin dissolved in depolymerized lignin obtained from hydrotreatment of lignin. The method may be operated in batch mode or in a continuous mode but there is no need to add any oil.
    Type: Application
    Filed: September 21, 2016
    Publication date: September 20, 2018
    Inventors: Christian DAHLSTRAND, Joseph SAMEC
  • Composition comprising esters of lignin and oil or fatty acids
    Patent number: 10030147
    Abstract: The present invention relates to a composition comprising a carrier liquid and lignin or lignin derivatives solubilized in said carrier liquid; wherein at least one of the hydroxyl groups of the lignin or lignin derivatives have been substituted with ester groups forming esterified lignin or lignin derivatives. The composition may be used for preparing fuels or lubricants.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: July 24, 2018
    Assignee: Ren Fuel K2B AB
    Inventors: Joseph Samec, Joakim Löfstedt, Christian Dahlstrand, Alexander Orebom, Supaporn Sawadjoon
  • COMPOSITION COMPRISING DERIVATIZED LIGNIN FOR FUEL PRODUCTION
    Publication number: 20180142177
    Abstract: The present invention relates to a composition comprising lignin and a solvent where the lignin is functionalized with an ether group.
    Type: Application
    Filed: June 15, 2016
    Publication date: May 24, 2018
    Inventors: Christian Dahlstrand, Alexander Orebom, Joseph Samec, Supaporn Sawadjoon, Joakim Löfstedt
  • Compositions of biomass materials for refining
    Patent number: 9920201
    Abstract: The present invention relates to a composition and a method for preparing said composition where the composition comprises a lignin, a solvent, a carrier liquid, and a fatty acid, wherein the lignin constitutes at least 4 weight % of the composition and has a weight average molecular weight of not more than 5,000 g/mol, wherein the solvent is an alcohol, ether, organic ester, sulfoxide, ketone, aldehyde or a combination thereof, and wherein the carrier liquid is a hydrocarbon oil.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: March 20, 2018
    Assignee: REN FUEL K2B AB
    Inventors: Joseph Samec, Christian Dahlstrand, Joakim Löfstedt
  • ETHER FUNCTIONALIZED LIGNIN FOR FUEL PRODUCTION
    Publication number: 20170298192
    Abstract: The present invention relates to a composition comprising lignin and a solvent where the lignin is functionalized with an ether group.
    Type: Application
    Filed: November 3, 2015
    Publication date: October 19, 2017
    Applicant: REN FUEL K2B AB
    Inventors: Joseph SAMEC, Joakim LÖFSTEDT, Alexander OREBOM, Christian DAHLSTRAND, Supaporn SAWADJOON
  • METHOD FOR EFFICIENT EXTRACTION OF LIGNIN
    Publication number: 20170015792
    Abstract: A method of extracting lignin from an aqueous composition by either treating the composition with a solvent and heat, or by acidifying the composition in order to induce phase separation.
    Type: Application
    Filed: March 11, 2015
    Publication date: January 19, 2017
    Applicant: REN FUEL K2B AB
    Inventors: Joseph SAMEC, Joakim LOFSTEDT, Christian DAHLSTRAND, Alexander OREBOM, Supapom SAWADJOON
  • Composition Comprising Esters Of Lignin And Oil Or Fatty Acids
    Publication number: 20160312030
    Abstract: The present invention relates to a composition comprising a carrier liquid and lignin or lignin derivatives solubilized in said carrier liquid; wherein at least one of the hydroxyl groups of the lignin or lignin derivatives have been substituted with ester groups forming esterified lignin or lignin derivatives. The composition may be used for preparing fuels or lubricants.
    Type: Application
    Filed: December 16, 2014
    Publication date: October 27, 2016
    Inventors: Joseph SAMEC, Joakim LÖFSTEDT, Christian DAHLSTRAND, Alexander OREBOM, Supaporn SAWADJOON
  • Composition Comprising Esters Of Lignin And Organic Solvent
    Publication number: 20160312029
    Abstract: The present invention relates to a composition comprising an organic solvent and lignin or lignin derivatives; wherein at least one of the hydroxyl groups of the lignin or lignin derivatives have been substituted with ester groups forming esterified lignin or lignin derivatives. The composition may be used for preparing fuels.
    Type: Application
    Filed: December 16, 2014
    Publication date: October 27, 2016
    Applicant: Ren Fuel K2B AB
    Inventors: Joseph SAMEC, Joakim LÖFSTEDT, Christian DAHLSTRAND, Alexander OREBOM, Supaporn SAWADJOON
  • COMPOSITIONS OF BIOMASS MATERIALS FOR REFINING
    Publication number: 20150361266
    Abstract: The present invention relates to a composition and a method for preparing said composition where the composition comprises lignin or lignin derivatives, solvent and a carrier liquid. The composition is suitable for refinery processes.
    Type: Application
    Filed: January 24, 2014
    Publication date: December 17, 2015
    Inventors: Joseph SAMEC, Christian DAHLSTRAND, Joakim LÖFSTEDT