1924
Founding of the company by Ferdinand Schwarz in Düsseldorf – Grafenberg

1943/44
Relocation of the company destroyed by the war to the city Römhild in the Thuringian Grabfeld

1953
Nationalisation as part of the industry politics of the GDR and renaming into VEB Elektro Industrieofen- and Gerätebau Meiningen-Römhild and strong integration into national economic planning of the RGW (council for mutual economic aid)

1989/90
Administration by the trust after German Unification and renaming in ELIOG Industrieofenbau GmbH

1992

Privatisation, purchase of the company after German Unification by Mr. M. G. Leonhard, R. Noll and H.P. Schmitz and change of name into ELIOG-kelvitherm Industrieofenbau GmbH

2002
Alienation of the company by private investors.

2007

Part of ELIOG Technologie AG, Erfurt

2010

Continuation of the company for an unlimited period under guidance of insolvency administrator G. Scheid, Leipzig

01.01.2011

Assumption of the operations of ELIOG-kelvitherm

approx. 1948
approx. 1955
2000