Pulp production
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 14, 1997
Grant Date -
N/A
app pub date -
Apr 8, 1994
filing date -
Jul 12, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of manufacturing chemical pulp out of comminuted cellulosic fiber material comprising digesting the fiber material with digestion liquid without preceding peroxide stage. According to the invention the comminuted fiber material is treated in at least one stage prior to said digestion, in the presence of a liquid containing at least one compound having the ability to form complexes with metals existing naturally in the fiber material.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully