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For the Inventor, By the Inventor

DE

Sempell Aktiengesellschaft


USPTO Granted Patents = 3

Trademarks = 2

Forward Citations = 11

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2 inventors (with patents filed for the assignee):

goldMedal Manfred Weyand (3 out of 6 patents)

silverMedal Carl H Hafele (2 out of 6 patents)


3 patents:

1. 4946131 - Arrangement for damping linear movements (1990-08-07),
2. 4938120 - Device for influencing the reset value of a valve (1990-07-03),
3. 4875659 - Servo-valve (1989-10-24),
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USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#279 in

#8,427 in Germany

DE
DE

Sempell Aktiengesellschaft

Forward Citations = 11

2 inventors:

goldMedal Manfred Weyand (3 out of 6 patents)

silverMedal Carl H Hafele (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sempell Aktiengesellschaft. Retrieved from https://idiyas.com/company/sempell-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]
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