Spring, Texas
United States
6
2011-07-07
The entities that hold a legal rights for patent applications filed by inventor Duan Ping:
Ping Duan from Spring, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Shape memory polyurethane foam for downhole sand control filtration devices
#2 | 2010-09-23Downhole sealing devices having a shape-memory material and methods of manufacturing and using same
#3 | 2010-04-15Shape memory polyurethane foam for downhole sand control filtration devices
#4 | 2009-12-17Coated extrudable ball seats
#5 | 2009-04-02Downhole sealing devices having a shape-memory material and methods of manufacturing and using same
#6 | 2008-04-17Apparatus and method for controlled deployment of shape-conforming materials
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