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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),

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 based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Klockner-Werke Ag

75 Patents

#4 in Duisburg

#768 in Germany

#9,996 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)

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