Manufacture of cellulose esters: recycle of caustic and/or acid from pre-treatment of pulp

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20070167618A1
SERIAL NO

11332741

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A process for the manufacture of cellulose esters is described. The process includes the steps of: pre-treating pulp for the removal of impurities with either caustic or acid or both, esterifying the pre-treated pulp, and recycling the caustic or acid or both from the pre-treating step.

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Patent Owner(s)

Patent OwnerAddress
DEUTSCHE BANK AG NEW YORK BRANCH AS COLLATERAL AGENT60 WALL STREET NEW YORK NY 10005

International Classification(s)

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  • 2006 Application Filing Year
  • C08B Class
  • 173 Applications Filed
  • 73 Patents Issued To-Date
  • 42.20 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2006200720082009201020112012201320142015201620170255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Batson, Billy C Pearisburg, VA 2 14
Fallon, Denis G Blacksburg, WV 16 90
Kizer, Lawton E Blacksburg, VA 25 183
Stogner, Henry P Bluefield, WV 5 48
Toney, Charles E Newport, VA 2 9
Wang, Linfu Blacksburg, VA 5 47

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Patent Citation Ranking

  • 7 Citation Count
  • C08B Class
  • 7.89 % this patent is cited more than
  • 18 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges64614131211101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9002.557.51012.51517.52022.52527.53032.53537.54042.54547.550

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