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For the Inventor, By the Inventor

Hamburg, Germany

Hamburger Stahlwerke Gmbh


USPTO Granted Patents = 9

Forward Citations = 36

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20 inventors (with patents filed for the assignee):

goldMedal Manfred Reumann (2 out of 2 patents)

silverMedal Klaus Walden (2 out of 2 patents)

bronzeMedal Gero Papst (2 out of 2 patents)

4.  Gunther Ropke (2 out of 2 patents)

5.  Eckehard F Forster (2 out of 2 patents)

6.  Ernst Luhrsen (1 out of 27 patents)

7.  Andreas Kubicek (1 out of 1 patent)

8.  Wolfgang Preiss (1 out of 1 patent)

9.  Manfred Wagner (1 out of 1 patent)

10.  Klaus Theis (1 out of 1 patent)

11.  Wolfram Becher (1 out of 1 patent)

12.  Hans-Jorg Topfer, Deceased (1 out of 1 patent)

13.  Siegfried Sensis (1 out of 1 patent)

14.  Dieter Ameling (1 out of 1 patent)

15.  Joachim Schwerdtfeger (1 out of 1 patent)


9 patents:

1. 4995251 - System for trimming leading and trailing ends from a wire coil (1991-02-26),
2. 4891963 - Wire rod rolling mill (1990-01-09),
3. 4624298 - Method of cooling strands in the continuous casting of steel (1986-11-25),
4. 4374585 - Apparatus for the direct reduction of iron ores (1983-02-22),
5. 4290800 - Process for feeding iron sponge into an electric arc furnace (1981-09-22),
6. 4268015 - Bottom outlet or discharge for use in metallurgical vessels for steel (1981-05-19),
7. 4248623 - Process for the direct reduction of iron ores (1981-02-03),
8. 4222257 - Method of manufacturing rolled wire rod (1980-09-16),
9. 3949585 - Process for cooling rolled wire (1976-04-13),
Company Overview
Hamburger Stahlwerke GmbH is a leading steel manufacturer based in Hamburg, Germany. With a history dating back to 1838, the company has established itself as a reliable and high-quality provider of steel products for various industries. HSW specializes in producing hot-rolled coils, heavy plates, and high-grade steels, catering to the needs of customers worldwide. The company is known for its innovative approach, sustainable practices, and commitment to quality, making it a trusted partner in the steel industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

9 Patents

#100 in Hamburg

#4,072 in Germany

Hamburg, DE
Hamburg, Germany

Hamburger Stahlwerke Gmbh

Forward Citations = 36

20 inventors:

goldMedal Manfred Reumann (2 out of 2 patents)

silverMedal Klaus Walden (2 out of 2 patents)

bronzeMedal Gero Papst (2 out of 2 patents)

4.  Gunther Ropke (2 out of 2 patents)

5.  Eckehard F Forster (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hamburger Stahlwerke Gmbh. Retrieved from https://idiyas.com/company/hamburger-stahlwerke

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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