• 1890 Foundation of the „Porcelain Factory Hermsdorf“

• 1897 Invention of the high voltage insulator with the the „Delta“ shape

• 1946 Start of the laboratory production of ferrites at the same time with Philips

• 1947 Short run of the soft ferrites:Manifer® (Mangan-Nickel-Ferrit)

• 1951 Short run of hard ferrites: Maniperm

• 1957 Foundation of the „Ceramic Works Hermsdorf“

• 1986 Partial automation of the hard ferrite production

• 1990 Foundation of the TRIDELTA AG

• 1992 Takeover by JENOPTIK AG

• 1997 Spin off - TRIDELTA GmbH consists of two departments: Soft ferrites and Hard ferrites

• 2001 Takeover by "Tridelta Beteiligungs-GmbH". As from now on, the Tridelta group belongs to a German family business.

• 2002 TRIDELTA GmbH can look back on a 50 years long history

• 2003 Reinforcement and expansion of the international business

• 2004 Increase of the production capacities and intensification in research and development

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© TRIDELTA Weichferrite GmbH 2009