For the Inventor, By the Inventor

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Reinach, Switzerland

Crown Cork Ag

USPTO Granted Patents = 15

CIPO Patents = 5

Forward Citations = 422

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13 inventors (with patents filed for the assignee):

Michael Kirchgessner (11 out of 11 patents)

Udo Bosl (6 out of 8 patents)

Franz T Bartl (3 out of 4 patents)

4. Georg Pfefferkorn (2 out of 5 patents)

5. Klaus-Jurgen Herrmann (2 out of 2 patents)

6. Hans-Werner Breuer (2 out of 9 patents)

7. Gunter Wustmann (1 out of 1 patent)

8. Thomas Bartl (1 out of 1 patent)

9. Herwig Janousch (1 out of 1 patent)

10. Kelvin Pitman (1 out of 11 patents)

11. George Pfefferkorn (1 out of 1 patent)

12. Richard Jauslin (1 out of 1 patent)

13. Lino Dreyer (1 out of 2 patents)

14. Franz Thomas Bartl (0 patent)

15 patents: Sort by Forward Citations

1. 6116451 - Screw cap with anti-tamper strip (2000-09-12),

2. 6116444 - Plastic closure cap (2000-09-12),

3. 6006930 - Bottle finish and closure cap with double screw thread (1999-12-28),

4. 5893474 - Screw cap with anti-tamper strip (1999-04-13),

5. 5871111 - Screwable closure cap with security against over-tightening (1999-02-16),

6. 5848717 - Snap-on seal arrangement on a container (1998-12-15),

7. 5836468 - Plastic snap closure with anti-tamper strip and method of its manufacture (1998-11-17),

8. 5803286 - Plastic closure cap with early venting inner seal (1998-09-08),

9. 5775527 - Closure cap with anti-tamper strip (1998-07-07),

10. 5725115 - Closure cap with tether (1998-03-10),

11. 5715959 - Closure cap with anti-tamper ring (1998-02-10),

12. 5248050 - Cap having expandable guarantee strip (1993-09-28),

13. 5197621 - Screw cap made of plastics material (1993-03-30),

14. 5074425 - Plastic closure cap (1991-12-24),

15. 4784280 - Sealing cap with a safety band (1988-11-15),

Crown Cork Ag, headquartered in Reinach, Switzerland, specializes in the development and manufacturing of innovative packaging solutions. The company is recognized for its expertise in metal packaging, particularly for beverages and food products. With a strong focus on sustainability and efficiency, Crown Cork Ag leverages advanced technologies to enhance product performance and reduce environmental impact. Its commitment to quality and innovation positions it as a leader in the global packaging industry.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

15 Patents

#12 in Reinach

#804 in Switzerland

#39,881 in the World

Reinach, Switzerland

Crown Cork Ag

Forward Citations = 422

13 inventors:

Michael Kirchgessner (11 out of 11 patents)

Udo Bosl (6 out of 8 patents)

Franz T Bartl (3 out of 4 patents)

4. Georg Pfefferkorn (2 out of 5 patents)

5. Klaus-Jurgen Herrmann (2 out of 2 patents)

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