Calgary
Canada
3
2011-11-17
The entities that hold a legal rights for patent applications filed by inventor Debruijn Gunnar:
Gunnar Debruijn from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
Compositions and methods for cleaning a wellbore prior to cementing
#2 | 2011-03-10Well Repair Using Swellable Material in a Remedial Matrix
#3 | 2009-10-08Carbonaceous extenders for flexible cement
3474887 ⎘