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Duisburg, Germany

Klockner-Werke Ag

USPTO Granted Patents = 75

Forward Citations = 375

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70 inventors (with patents filed for the assignee):

Wilhelm Berstermann (8 out of 9 patents)

Ulrich Grisar (6 out of 7 patents)

Lothar Gutjahr (6 out of 7 patents)

4. Hans Jurgen Langhammer (5 out of 5 patents)

5. Wolfgang Spath (4 out of 4 patents)

6. Hans Warnke (4 out of 6 patents)

7. Lothar Fink (4 out of 6 patents)

8. Manfred Chitil (4 out of 5 patents)

9. Willy Watermann (3 out of 3 patents)

10. Hans Gunther Geck (3 out of 3 patents)

11. Gunther Geck (3 out of 3 patents)

12. Jurgen Langhammer (3 out of 3 patents)

13. Joachim Linde (3 out of 4 patents)

14. Werner Schrammel (3 out of 3 patents)

15. Hans-Jurgen Langhammer (3 out of 3 patents)

Core Competencies:

Injection Molding

Hydraulic Units

Mold Closing

Spectroscopic Testing

Steel Production

Coal Gas Supply

Metal Fibers

Vulcanization

Continuous Casting

Dust Purification

Casting Apparatus

Mine Roof Support

75 patents: Sort by Forward Citations

1. 4632651 - Hydraulically controlled extruder injection molding units for the (1986-12-30),

2. 4605367 - Mold closing unit of an injection molding machine (1986-08-12),

3. 4599063 - Injection molding apparatus having die closing and locking means (1986-07-08),

4. 4592714 - Mold closing unit of an injection molding machine (1986-06-03),

5. 4592713 - Mold closing unit of an injection molding machine (1986-06-03),

6. 4592712 - Plastification and injection device for an injection molding machine (1986-06-03),

7. 4568508 - Cut-off process for terminating injection operations of an injection (1986-02-04),

8. 4556315 - Process and apparatus for the emission-spectroscopical testing of (1985-12-03),

9. 4544270 - Apparatus for the spectrographic analysis of workpieces formed from iron (1985-10-01),

10. 4542781 - Breakout warning method, utilizing acoustics, in a continuous casting (1985-09-24),

11. 4480821 - Apparatus for performing a work function on a tubular workpiece (1984-11-06),

12. 4475581 - Method and apparatus for fabricating glad ingots (1984-10-09),

13. 4473399 - Method of supplying coal gas to a smelting works (1984-09-25),

14. 4464831 - Method and device for fabricating insulated joints for railroad tracks (1984-08-14),

15. 4453904 - Injection mold device for forming an article such as footwear (1984-06-12),

Company Overview

Klockner-Werke AG, headquartered in Duisburg, Germany, specializes in advanced injection molding technologies and hydraulic units. The company is recognized for its expertise in mold closing mechanisms and spectroscopic testing, contributing significantly to the manufacturing sector. Additionally, Klockner-Werke is involved in steel production, coal gas supply, and the development of metal fibers and vulcanization processes, positioning itself as a key player in various industrial applications and innovations.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

75 Patents

#4 in Duisburg

#769 in Germany

#10,023 in the World

Duisburg, Germany

Klockner-Werke Ag

Forward Citations = 375

70 inventors:

Wilhelm Berstermann (8 out of 9 patents)

Ulrich Grisar (6 out of 7 patents)

Lothar Gutjahr (6 out of 7 patents)

4. Hans Jurgen Langhammer (5 out of 5 patents)

5. Wolfgang Spath (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Klockner-Werke Ag. Retrieved from https://idiyas.com/company/klockner-werke-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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