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For the Inventor, By the Inventor

Stuttgart, Germany

Hansa Metallwerke Ag

Calculating rank
USPTO Granted Patents = 218

% Expired Patents = 6.9


Trademarks = 1

Forward Citations = 3,588

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44 inventors (with patents filed for the assignee):

goldMedal Klaus Fleischmann (61 out of 61 patents)

silverMedal Michael Lammel (36 out of 88 patents)

bronzeMedal Reinhard Zetsche (32 out of 34 patents)

4.  Michael Zeisel (29 out of 67 patents)

5.  Tomas Fiegl (21 out of 32 patents)

6.  Achim Pohl (21 out of 24 patents)

7.  Horst K Kunkel (16 out of 16 patents)

8.  Bruno Sacco (11 out of 185 patents)

9.  Hans E Oberdorfer (9 out of 11 patents)

10.  Hans-Hermann Hecker (4 out of 4 patents)

11.  Werner J Weinmann (4 out of 4 patents)

12.  Roland Huber (4 out of 5 patents)

13.  Walter F Gruber (4 out of 4 patents)

14.  Hermann K Kress (4 out of 9 patents)

15.  Heinz W Schmidt (3 out of 9 patents)


Core Competencies:
Sanitary Fitting
Mixing Faucet
Shower Head
Handshower Set
Water Disinfection
Tap Sprinkler
Plumbing Fixture
Sanitary Appliance
Mixing Tap
Shower Panel
Sanitary Installation
Faucet Design

218 patents:

1. D705895 - Tap sprinkler for sinks (2014-05-27),
2. D694859 - Kitchen tap (2013-12-03),
3. 8276609 - Concealed plumbing fixture (2012-10-02),
4. 8220480 - Sanitary fitting (2012-07-17),
5. 8112832 - Attachment of a sanitary washstand fitting to a washstand (2012-02-14),
6. 8070075 - Sanitary water-outflow fitting (2011-12-06),
7. D634402 - Mixing faucets (2011-03-15),
8. 7900649 - Sanitary single-lever mixer (2011-03-08),
9. 7832662 - Shower head (2010-11-16),
10. D626634 - Mixing tap (2010-11-02),
11. 7821182 - Device for actuating a sanitary appliance (2010-10-26),
12. 7819541 - Sanitary fitting with an illuminated outlet consisting of transparent material (2010-10-26),
13. 7810942 - Sanitary fitting comprising an assembly of several light sources (2010-10-12),
14. 7784481 - Actuating device for fixtures and method for the operation thereof (2010-08-31),
15. D617879 - Mixing tap (2010-06-15),
Company Overview
Hansa Metallwerke AG, headquartered in Stuttgart, Germany, specializes in the development and manufacturing of high-quality sanitary fittings. The company is renowned for its innovative solutions in the sanitary sector, including mixing faucets, shower heads, and handshower sets. Hansa is committed to advancing water disinfection technologies and enhancing plumbing fixtures and sanitary appliances, ensuring both functionality and sustainability in modern bathroom and kitchen environments. Its focus on quality and design positions Hansa as a leader in the sanitary fittings industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

218 Patents

#11 in

#271 in Germany

#3,929 in the World

Stuttgart, DE
Stuttgart, Germany

Hansa Metallwerke Ag

Forward Citations = 3,588

44 inventors:

goldMedal Klaus Fleischmann (61 out of 61 patents)

silverMedal Michael Lammel (36 out of 88 patents)

bronzeMedal Reinhard Zetsche (32 out of 34 patents)

4.  Michael Zeisel (29 out of 67 patents)

5.  Tomas Fiegl (21 out of 32 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hansa Metallwerke Ag. Retrieved from https://idiyas.com/company/hansa-metallwerke-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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