Methods for maintaining zonal isolation in a subterranean well
- Application ID: EP13305674
- Status: █ PATENT GRANTED
This EP application has the IPC class C04 (CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES) and C09 (DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR). Etudes & Productions Schlumberger is specialized in the combination C04 and C09. We found, that Engel Patentanwaltskanzlei, Dr. Solf & Zapf, Weser & Kollegen, Cabinet Michel Richebourg, 3M Deutschland GmbH and 10 others are specialized in all of these IPC classes as well. For a similar patent, they might be a good choice.