Timeline

First documentary mention of the "Kupferhütte auf der Nanzenbach"

The name “Isabelle Kupferhütte” is adopted; silver, lead and copper foundries are already in operation by this time.

Transfer of Isabellenhütte into the owndership of the Heusler family. 

First production of manganese (98% purity) and copper-manganese alloys.

The alloy Manganin® is developed in collaboration with the Physical and Technical Institute of the German Reich (PTR). Manganin® remains an essential material in our precision and power resistors.

Friedrich Heusler (1866 - 1947) discovers the ferromagnetism of the later so called Heusler alloys (alloys consisting of non-ferrous metal).

Thermoelectric and resistance alloy division established. The company begins marketing thermoelectric alloys and developing foreign markets.

Insulation works built.

Hot rolling mill built; the first electrical components are developed.

Isabellenhütte becomes a member of the German Calibration Service (Deutscher Kalibrierdienst).

Production of the world’s first SMD mOhm precision current-sensing shunt.

The company develops a patented process for making electron-beam welded components and introduces the current ISA-WELD® range.

Certification to DIN EN ISO 9002.

Certification to DIN EN ISO 9001.

Certification to ISO/TS 16949; ISA-ASIC (Application Specific Integrated Circuit) developed.

First production use of ISA-ASIC in battery management systems.

Precision measurement range launched.

Introduction of VMx series of SMD resistors; 3-tonne vacuum induction furnace enters service.

Acquisition of our longterm trade partner ISOTEK and first international subsidiary in USA.

Foundation of our subsidiary in Tokyo, Japan. Isabellenhütte K.K.

Foundation of our subsidiary in Shanghai, China, Electronic Technology Trading Co., Ltd.Certification DIN EN ISO 14001 / DIN EN ISO 50001 (Environmental- and Energy Management).

Opening calibration authority DAkkS, Set-up pilot plant for small-scale alloys orders. Rebuilding components production-line, Set-up central building apprenticeship.

Set-up measurement plant.