Sulfonated polyethersulfone copolymer containing hydroxyl groups and preparation method thereof, polymer electrolyte membrane for fuel cells and membrane electrode assembly comprising the same
- Application ID: EP14165774
- Status: █ PATENT GRANTED
This patent has the IPC combination C08 (ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON) and H01 (BASIC ELECTRIC ELEMENTS) is specialized in the combination C08 and H01. We found, that TransMIT GmbH, Riechelmann & Carlsohn GbR, Patentanwälte Rauschenbach, Boehmert & Boehmert Anwaltspartnerschaft mbB, Hoffmann Eitle PartmbB and 32 others are specialized in all of these IPC classes. For a similar patent, they might be a good choice.