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USPTO Data Jan 1 1976 - Oct 13 2026
1 Patents
#187 in Cologne
#15,369 in Germany
Pfeiffer and Langen
Forward Citations = 2
3 inventors:
Pfeiffer and Langen
Forward Citations = 2
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3 inventors (with patents filed for the assignee):
Dieter Schwengers (1 out of 10 patents)
Ingrid Keller (1 out of 1 patent)
Hans Georg Schneider (1 out of 2 patents)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pfeiffer and Langen. Retrieved from https://idiyas.com/company/pfeiffer-and-langen
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]
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]
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]