Quaternary nitrogen containing amphoteric water soluble polymers and their use in drilling fluids
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 28, 2001
Grant Date -
N/A
app pub date -
Apr 7, 1999
filing date -
Apr 7, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Loading Importance Indicators... 
Abstract
Water based drilling fluid compositions which contain at least one viscosity builder and at least one rheological control agent wherein the rheological control agent is an amphoteric polymer, the cationic groups of the amphoteric polymer being quaternary ammonium groups.
Loading the Abstract Image...
OK
First Claim
Family
Loading Family data...
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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