% Expired Patents = 100.0

EPO Patents = 1

Trademarks = 1

Forward Citations = 8

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4 inventors (with patents filed for the assignee):

Klaus Krengel (1 out of 2 patents)

Tobias Schildt (1 out of 1 patent)

Matthias Neff (1 out of 1 patent)

4. Sebastian Beil (1 out of 1 patent)

5. Sebastian Pena-Feldmann (0 patent)

6. Peter Tepaß (0 patent)

1 patent: Sort by Forward Citations

1. 7651221 - Method and device for working the edges of spectacle lenses (2010-01-26),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

1 Patents

#206 in Düsseldorf

#15,369 in Germany

Düsseldorf, Germany

Buchmann Deutschland Gmbh

Forward Citations = 8

4 inventors:

Klaus Krengel (1 out of 2 patents)

Tobias Schildt (1 out of 1 patent)

Matthias Neff (1 out of 1 patent)

4. Sebastian Beil (1 out of 1 patent)

5. Sebastian Pena-Feldmann (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Buchmann Deutschland Gmbh. Retrieved from https://idiyas.com/company/buchmann-deutschland

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]

1 patent (EPO):

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]