Priority Date: 24.04.04 (US 20040831668)

Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations

  • Application ID: EP15150042
  • Status: APPLICATION DEEMED TO BE WITHDRAWN

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Specialization

This patent has the IPC class C09 (DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR) A.A. Thornton & Co. is specialized in C09. Here you find a list of all patent agent firms which are specialized in this IPC class. For a similar patent, they might be a good choice.

Timeline

  • 24.04.2004 - Priority Date (US 20040831668)
  • 10.06.2015 - Publication A1 (EP2881445)

IPC Classification