Method of increasing enzyme stability and activity for pulp and paper production
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 9, 2015
Grant Date -
Jul 8, 2010
app pub date -
Jan 6, 2009
filing date -
Jan 6, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Wood pulp is treated with an esterase formulation in combination with a metal ion or cationic polymer to increase the stability or activity or both of esterase enzymes at high temperature, or at extreme pH ranges of acidic and alkaline conditions. The treatment by esterase together with metals ion or cationic polymer can be used to treat pitch containing pulp at high temperatures prior to, during or after refining of wood chip/pulp, in order to enhance the reduction of pitch problems and facilitate in the manufacture of paper.
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International Classification(s)
- 2009 Application Filing Year
- D21H Class
- 179 Applications Filed
- 119 Patents Issued To-Date
- 66.49 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D21H Class
- 0 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 9, 2026 |
