Chemical method for lignin depolymerization

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6214976
SERIAL NO

09503855

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Abstract

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A process for depolymerizing and/or chemically modifying lignin or lignin-like compounds in which a solution of copper and peroxide acts on lignin and/or lignin-like substance at a temperature of less than 100.degree. C., characterized in that the solution is an aqueous solution containing copper or a copper complex, a coordination compound and peroxide and wherein the concentration of the copper or copper complex is between 0.001% and 5%, and wherein the concentration of the coordination compound is lower than 20% and wherein the concentration of peroxide is between 0.01% and 20%.

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Patent Owner(s)

Patent OwnerAddress
ANNIKKI GMBHDR AUNER STRASSE 20/1 8074 RAABA-GRAMBACH 8074

International Classification(s)

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  • 2000 Application Filing Year
  • C07G Class
  • 41 Applications Filed
  • 15 Patents Issued To-Date
  • 36.59 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20002001200220032004200520062007200820090255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koller, Karin Vienna, AT 1 36
Messner, Kurt Vienna, AT 12 75
Watanabe, Takashi Hirakata, JP 841 9190

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Patent Citation Ranking

  • 36 Citation Count
  • C07G Class
  • 86.67 % this patent is cited more than
  • 24 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges42591111301 - 1011 - 2021 - 3031 - 4061 - 7071 - 80100 +0246810121416182022242628

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