2004
Expansion of production capacities and intensification of business activities in the field of research and development
2003
Strengthening and expansion of international business
2002
TRIDELTA GmbH has over 50 years of ferrite history and has developed into the third largest magnet manufacturer in Europe
2001
Acquisition of the TRIDELTA Group by a family-owned company
1998
Establishment of TRIDELTA Magnet Technology Holdings Ltd.
1997
Acquisition by the investment company Chartinvest of the business divisions hard ferrite, soft ferrite, and surge arresters
1992
Acquisition by JENOPTIK AG
1990
Establishment of TRIDELTA AG
1986
Semi-automatic manufacturing of hard ferrites
1978
Power ferrites for switching power supplies
1957
Establishment of KWH (Keramische Werke Hermsdorf)
1951
Small-scale production of hard ferrite Maniperm
1947
Small-scale production of soft ferrite Manifer® (manganese-nickel ferrite)
1946
Ferrite laboratory production concurrent with Philips
1922
Establishment of HESCHO with insulator production.
1897
Invention of the high-voltage insulator in the shape of a delta bell
1890
Establishment of the "Porzellanfabrik Hermsdorf"