Howaldtswerke-Deutsche Werft Ag

Calculating rank

USPTO Granted Patents = 5

% Expired Patents = 20.0

EPO Patents = 1

Forward Citations = 13

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9 inventors (with patents filed for the assignee):

Hartmut Angenendt (1 out of 1 patent)

Michael Iskra (1 out of 1 patent)

Wolfgang Scharf (1 out of 4 patents)

4. Joachim Reuter (1 out of 1 patent)

5. Rolf Körver (1 out of 1 patent)

6. Jürgen Ritterhoff (1 out of 1 patent)

7. Peter Hauschildt (1 out of 1 patent)

8. Eike Lehmann (1 out of 1 patent)

9. Reiner Jannusch (1 out of 1 patent)

10. Josef Lersch (16 patents)

11. Gerd Ahlf (0 patent)

12. Manfred Eder (0 patent)

13. Jens Uwe Iwers (0 patent)

14. Werner Hartung (0 patent)

5 patents: Sort by Forward Citations

1. 7299114 - Method and device for determining the residual travel duration of a submarine (2007-11-20),

2. 7278347 - Submarine (2007-10-09),

3. 6847142 - Torque motor (2005-01-25),

4. 6736687 - Method for discharging waste gas from submarines without a signature (2004-05-18),

5. 4640216 - Device for reducing vibrations of periscopes (1987-02-03),

Company Overview

Howaldtswerke-Deutsche Werft AG (HDW) is a German shipbuilding company based in Kiel, Germany. With a history dating back to 1838, HDW is known for its expertise in building submarines, surface vessels, and maritime technology. The company has earned a reputation for high-quality, innovative ship designs and advanced naval engineering solutions. HDW is committed to meeting the evolving needs of the maritime industry and maintaining its position as a leading shipbuilder in Europe.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

5 Patents

#14 in

#6,108 in Germany

Kiel, Germany

Howaldtswerke-Deutsche Werft Ag

Forward Citations = 13

9 inventors:

Hartmut Angenendt (1 out of 1 patent)

Michael Iskra (1 out of 1 patent)

Wolfgang Scharf (1 out of 4 patents)

4. Joachim Reuter (1 out of 1 patent)

5. Rolf Körver (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Howaldtswerke-Deutsche Werft Ag. Retrieved from https://idiyas.com/company/howaldtswerke-deutsche-werft-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]

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]