Calgary
Canada
15
2021-03-11
The entities that hold a legal rights for patent applications filed by inventor SMITH CARL KEITH:
CARL KEITH SMITH from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
Method for making and using a drilling fluid
#2 | 2019-10-17Drill fluid and method for tunneling
#3 | 2018-08-09Drilling fluid
#4 | 2017-06-22Drilling fluid and method for drilling a wellbore
#5 | 2017-03-02Method for making and using a drilling fluid
#6 | 2017-03-02Drilling fluid and method for drilling in coal-containing formations
#7 | 2016-01-28DRILLING FLUID AND METHODS
#8 | 2014-07-31DRILLING FLUID AND METHODS
#9 | 2013-08-29Drilling fluid and method for drilling in coal-containing formations
#10 | 2013-08-15Drilling fluid and method for drilling in coal-containing formations
#11 | 2013-05-23Drilling fluid and method for drilling a wellbore
#12 | 2011-12-15Drilling fluid and methods
#13 | 2011-11-17Drilling fluid and methods
#14 | 2010-04-15Drilling fluid and method for drilling in coal-containing formations
#15 | 2008-09-11Drilling fluid and methods
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