History
1970

Foundation of the engineering office Egon W. Könn, VDEh in Ketsch/Rhine.
Thermal technical design of steelmaking furnaces, development of advanced theoretical principles on convective thermal transfer for thermal processing plants with forced air circulation.
Development and construction of roller hearth furnaces for the thermal treatment of reinforcement steel mats.
Fundamental work and publications on thermal treatment, energy use and process automation.

1980

Foundation of Könn GmbH

As of 1981

Supplier of hot test furnaces from the STE series to well-known testing equipment manufacturers

1982

First export order: 14 furnaces for the Royal Thai Navy repair yard in Bangkok

1989

Attendance for the first time at the world’s largest trade fair for industrial furnace production “Thermprocess” in Düsseldorf; Könn introduced the first PC-supported furnace process control system, Thermosoft

1990

Relocation to a new production hall in the Ketsch-Ost business park

1994

Completion and occupation of a new office building

2003

Dipl.-Ing. Michael Könn is appointed managing director

2006

Relocation to a new, larger production site in the Ketsch-Süd business park

2017

Renaming and takeover of business by KÖNN Thermoprozesstechnik GmbH