IP Library › Granted Patent US 6,524,439
Granted Patent Utility
US 6,524,439 · App. 09/974,930

Manufacture of paper and paperboard

Inventors: Gordon Chen, Gary Richardson
Patented Case View Patent ↗
Granted: Feb 25, 2003 Filed: Oct 10, 2001
Inventors
Gordon Chen
Gary Richardson
Assignee (at issue)
Ciba Specialty Chemicals Water Treatments Ltd.

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Quick Facts
Patent No.
US 6,524,439
App. No.
09/974,930
Filed
2001-10-10
Granted
2003-02-25
Kind
B2