Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With chemical or physical modification of liberated fiber
Reexamination Certificate
2006-02-21
2006-02-21
Halpern, Mark (Department: 1731)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With chemical or physical modification of liberated fiber
C162S052000, C162S057000, C162S241000, C162S246000, C162S066000, C162S157600, C162S181200, C162S067000, C008S115510, C008S116100
Reexamination Certificate
active
07001483
ABSTRACT:
An apparatus for carboxylating wood pulp which utilizes the wood pulp bleach plant and the method of carboxylating the pulp which takes place in the bleach plant.
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Jewell Richard A.
Komen Joseph L.
Severeid David E.
Su Bing
Weerawarna S. Ananda
Halpern Mark
Weyerhaeuser Company
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