Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Reexamination Certificate
2007-12-26
2010-11-30
Hug, Eric (Department: 1791)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
C162S009000, C162S017000, C162S041000, C162S072000
Reexamination Certificate
active
07842161
ABSTRACT:
A process of treating a lignocellulosic material includes a pre-extraction step in which hemicellulose is extracted from the lignocellulosic material. Then, in a solvent pulping step, the lignocellulosic material is separated into pulp by contacting the lignocellulosic material with a cooking liquor comprising a solvent. In one embodiment, the solvent has a boiling point of at least about 150° C. In another embodiment, the cooking liquor comprises a mixture of solvent and water.
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Goyal Gopal C.
Jiang Jianer
van Heiningen Adriaan Reinhard Pieter
Yoon Sung-Hoon
Zou Haixuan
Calandra Anthony J
Hug Eric
International Paper
MacMillan Sobanski & Todd LLC
The University of Maine System Board of Trustees
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