| 1912 | Company established by Dr. Walter Weigert.
Discovery of bleaching solution (“Dr. Weigert’s Bleichessenz”) as a liquid product for laundry bleach. Supplying major laundries in Hamburg.
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| 1920s | Activities extended to supplying basket manufacturers with “Dr. Weigert´s Bleichessenz” and developing a further special alkaline bleaching agent, “Veloxiol Duplex”, for button manufacture.
Development of the first liquid alkaline cleaner and disinfectant for butter producers under the name neomoscan®.
Sale expansion of products for the dairy industry.
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| 1949 | Company re-established after the suspension of business activities during the war.
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| 1950s | Development of suitable cleaners and the first acid rinse aid for use in dishwashers, which were new at that time.
World-wide protection of the registered trade mark neodisher®.
Introduction to the market of neomoscan® M liquid, the first and still the dominant liquid active-chlorine product for the combined cleaning and disinfection of milking and milk-cooling systems.
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| 1960s | Development of the first phosphoric acid cleaners for the food industry under the registered trade mark niroklar®.
Expansion of the field of automated cleaning of laboratory glassware and medical instruments in close co-operation with the machine manufacturers.
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| 1970s | Focus on of the growth strategy on the expansion of the neodisher® range of applications in professionall kitchens with the emphasis on automated ware washing.
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| 1980s | Introduction to the market of the liquid cleaner neodisher® Alka 400 W for dishwashers.
Development of the neodisher® alkaline component process for machine dishwashing.
Development of doscan® F 85, the first additive for industrial high-speed bottle cleaning with biodegradable antifoam system.
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| 1985 | Establishment of Dr. Weigert’s French branch.
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| 1990s | Development of pH neutral, non-corrosive cleaners for automated dishwashing and the cleaning of surgical instruments.
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| 1993 | Establishment of Dr. Weigert’s Austrian branch.
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| 1998 | Establishment of Dr. Weigert’s Polish branch.
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| 1999 | Establishment of Dr. Weigert’s Hungarian branch.
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| 2005 | Establishment of Dr. Weigert’s branch in the Netherlands.
Introduction to the market of the “neodisher® 3Clean concept” for the automated cleaning of medical equipment.
Introduction to the market of “neomoscan® compact”, the surfactant-free hygiene concept for the beverage industry.
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| 2007 | Completion of the new administration building in Hamburg
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| 2008 | Establishment of the subsidiary Dr. Weigert UK
Establishment of the subsidiary Dr. Weigert Spain |