Priority Date: 21.02.12 (US 201213401190)

A DRILLING FLUID CONTAINING A SURFACTANT HAVING A HIGH BOILING POINT AND A LONG CHAIN TAIL GROUP AND A METHOD OF USING THE FLUID

  • Application ID: EP12818747
  • Status: APPLICATION WITHDRAWN

Applicant

Attorney

Employment test 51 - 200 employees
Company dna hoffmann eitle
operating since 1892
Headquarter in Munich and 4 offices
active in Legal Services and IP Portfolio Processing

Specialization

This patent has the IPC combination B01 (PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL) and C09 (DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR) is specialized in the combination B01 and C09. We found, that Isenbruck Bösl Hörschler LLP, Stolmár & Partner Patentanwälte PartG mbB, Hepp Wenger Ryffel AG, Demski & Nobbe, Fuchs Patentanwälte Partnerschaft mbB and 15 others are specialized in all of these IPC classes. For a similar patent, they might be a good choice.

Timeline

  • 21.02.2012 - Priority Date (US 201213401190)
  • 29.08.2013 - Publication A1 (WO2013126138)
  • 31.12.2014 - Publication A1 (EP2817384)