Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With chemical or physical modification of liberated fiber
Reexamination Certificate
2005-09-06
2005-09-06
Alvo, Stev (Department: 1731)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With chemical or physical modification of liberated fiber
C162S072000, C162S158000, C162S168200, C162S168300, C162S182000, C435S277000
Reexamination Certificate
active
06939437
ABSTRACT:
Methods of making paper or paperboard are described. In one method, at least one cellulytic enzyme composition and at least one cationic polymer composition are introduced to a paper making pulp at about the same time to form a treated pulp. The pulp may also be treated with at least one cationic starch. The resulting pulp is formed into a sheet of pulp. Other paper making processes are also described. A paper making apparatus is also described for carrying out the methods. Paper and paperboard made according to the methods are also described.
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Barclay Richard L.
Conrod Randall W.
Desjardins John
Hill, Jr. Walter B.
O'Malley James A.
Alvo Stev
Buckman Laboratories International Inc.
Kilyk & Bowersox P.L.L.C.
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