Calgary
Canada
4
2013-02-21
The entities that hold a legal rights for patent applications filed by inventor Wu An-Ming:
An-Ming Wu from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
Emulsified polymer drilling fluid and methods of preparation
#2 | 2011-09-22Emulsified polymer drilling fluid and methods of preparation
#3 | 2009-01-08Drilling fluid composition comprising hydrophobically associating polymers and methods of use thereof
#4 | 2008-01-31Emulsified polymer drilling fluid and methods of preparation
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