Olivier Legrain (Chairman) Mersen, previously called Carbone Lorraine, is a French international company in electrical power and advanced materials.

[2] He patented his idea under the title « Continuous electric furnace system »[3] During the 80s, Groupe Pechiney acquired a majority stake (61 percent) in Carbone Lorraine and financed an expansion and diversification process.

[8] This name is a tribute to Marin Mersenne, a 17th-century mathematician and philosopher, and is also the acronym for Material, Electrical, Research, Sustainable, Energy.

[13] That year, Mersen also announced a strategic technical partnership with Soitec to develop a new family of silicon carbide substrates for the electric vehicle market[14],.

[15] Mersen provides its products and solutions to many markets like the renewable energies (solar, wind), the semi-conductors,[30] the electric vehicles,[31] or the railways.

The Advanced Materials segment which develops equipment and technologies for high temperature resistance,[32] protection against corrosion[33],[34] and Electric Power Transfer.