% Expired Patents = 33.3

Forward Citations = 31

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4 inventors (with patents filed for the assignee):

Jianguang Sun (1 out of 1 patent)

Lambert Tillmann Röhrich (1 out of 2 patents)

Beat W Müller (1 out of 2 patents)

4. Stefan Mayer (1 out of 6 patents)

3 patents: Sort by Forward Citations

1. 9657029 - Method of preparing oxymorphone (2017-05-23),

2. D693457 - Inhaler (2013-11-12),

3. 7943172 - Film-coated tablet or granules containing as active ingredient a pyridylpyrimidine compound or a pharmaceutically acceptable salt of this compound (2011-05-17),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#5 in Zofingen

#2,402 in Switzerland

Zofingen, Switzerland

Siegfried Generics International Ag

Forward Citations = 31

4 inventors:

Jianguang Sun (1 out of 1 patent)

Lambert Tillmann Röhrich (1 out of 2 patents)

Beat W Müller (1 out of 2 patents)

4. Stefan Mayer (1 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Siegfried Generics International Ag. Retrieved from https://idiyas.com/company/siegfried-generics-international-ag

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]