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Zofingen, Switzerland

Siegfried Ltd.


USPTO Granted Patents = 8



Forward Citations = 8

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25 inventors (with patents filed for the assignee):

goldMedal Erik Heinz Lauterbach (3 out of 3 patents)

silverMedal Thomas Dinkel (3 out of 3 patents)

bronzeMedal Sabrina Heller (3 out of 3 patents)

4.  Yoshikazu Suzuki (1 out of 2 patents)

5.  Tillmann Roehrich (1 out of 1 patent)

6.  Irène Lehmann (1 out of 1 patent)

7.  Hans Ulrich Bichsel (1 out of 1 patent)

8.  Sirinporn Thamapipol (1 out of 1 patent)

9.  Alexander Franz (1 out of 1 patent)

10.  Peter Demel (1 out of 1 patent)

11.  Thomas Bader (1 out of 7 patents)

12.  Andreas Bertogg (1 out of 1 patent)

13.  Martin Eipert (1 out of 1 patent)

14.  Stephanie Hake (1 out of 1 patent)

15.  Norber Schärer (1 out of 1 patent)


8 patents:

1. 10413512 - Nicotine-containing granulate (2019-09-17),
2. 9745249 - Method for the preparation of beta-substituted gamma-amino carboxylic acids (2017-08-29),
3. 9585967 - Nicotine-containing product (2017-03-07),
4. 9414988 - Kit comprising a packaging material and a solid pharmaceutical or nutraceutical product contained in the packaging material (2016-08-16),
5. 8158793 - Demethylation of 14-hydroxy substituted alkaloid derivatives (2012-04-17),
6. 8101756 - Process for the preparation of quaternary N-alkyl morphin or morphinan alkaloid derivatives (2012-01-24),
7. 7872135 - Method for introducing a 1,2-double bond into 3-oxo-4-azasteroid compounds (2011-01-18),
8. 7619088 - Demethylation of 14-hydroxy substituted alkaloid derivatives (2009-11-17),
Siegfried Ltd. is a leading provider of pharmaceutical ingredients and APIs for the global healthcare industry. With over 140 years of experience, Siegfried is committed to delivering high-quality, innovative solutions to its customers. The company offers a comprehensive range of products and services, including custom synthesis, contract manufacturing, and regulatory support. Siegfried's state-of-the-art facilities and skilled team ensure the highest standards of quality and safety in the production of pharmaceutical ingredients. Its dedication to excellence and customer satisfaction has made Siegfried a trusted partner for pharmaceutical companies worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 2 2025

8 Patents

#2 in Zofingen

#1,188 in Switzerland

...
Zofingen, Switzerland

Siegfried Ltd.

Forward Citations = 8

25 inventors:

goldMedal Erik Heinz Lauterbach (3 out of 3 patents)

silverMedal Thomas Dinkel (3 out of 3 patents)

bronzeMedal Sabrina Heller (3 out of 3 patents)

4.  Yoshikazu Suzuki (1 out of 2 patents)

5.  Tillmann Roehrich (1 out of 1 patent)

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