Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Chemical treatment after start or completion of mechanical...
Reexamination Certificate
2006-03-07
2006-03-07
Halpern, Mark (Department: 1731)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Chemical treatment after start or completion of mechanical...
C162S026000, C162S009000, C162S023000, C162S072000, C162S091000, C435S277000, C435S278000
Reexamination Certificate
active
07008505
ABSTRACT:
In a new process for preparing pulped wood chips for paper making, chips from a hardwood such as eucalyptus are inoculated with aliving culture of one or more white rot fungi. The fungi propagate throughout the body of the wood chip, selectively attacking the lignin of the wood without harming the cellulosic fibers. Subsequent mechanical pulpting results in reduced utilization of energy, improved strength, and reduced cooking time.
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Akhtar Masood
Horn Eric G.
Lentz Michael J.
Swaney Ross E.
Biopulping International, Inc.
Halpern Mark
Michael & Best & Friedrich LLP
Peterson Jeffrey D.
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