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Koeln-Ehrenfeld, Germany

Gerhard Collardin Gmbh

USPTO Granted Patents = 16

Forward Citations = 106

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31 inventors (with patents filed for the assignee):

Roland Morlock (4 out of 8 patents)

Karl-Heinz Gottwald (3 out of 11 patents)

Reinhard Opitz (3 out of 6 patents)

4. Raschad Mady (3 out of 6 patents)

5. Lutz Schellenberg (3 out of 3 patents)

6. Kurt Hosemann (2 out of 4 patents)

7. Hans Gotta (2 out of 2 patents)

8. Heinz Portz (2 out of 2 patents)

9. Matthias Hamacher (2 out of 2 patents)

10. Bashir M Ahmed (1 out of 24 patents)

11. Hubert Harth (1 out of 13 patents)

12. Dieter Geruhn (1 out of 3 patents)

13. Wolf-Achim Roland (1 out of 11 patents)

14. Willi Wuest (1 out of 26 patents)

15. Jobst H Meyer Zu Bexten (1 out of 2 patents)

16 patents: Sort by Forward Citations

1. 5026440 - Chromium free treatment before coating metal surfaces (1991-06-25),

2. 4968360 - Process for desludging phosphating baths and device for carrying out (1990-11-06),

3. 4956016 - Anticorrosive agents and use thereof (1990-09-11),

4. 4944813 - Process for phosphating metal surfaces (1990-07-31),

5. 4775427 - Phosphate conversion coatings for composite metals (1988-10-04),

6. 4762572 - Process for phosphating electrolytically zinc-coated metals (1988-08-09),

7. 4761189 - Process and aqueous compositions for treating metal surfaces (1988-08-02),

8. 4680064 - Phosphate conversion coating accelerators (1987-07-14),

9. 4639319 - Electrolyte stabilization of latices (1987-01-27),

10. 4636264 - Autodeposition post-bath rinse process (1987-01-13),

11. 4622078 - Process for the zinc/calcium phosphatizing of metal surfaces at low (1986-11-11),

12. 4565611 - Aqueous electrolytes and method for electrodepositing nickel-cobalt (1986-01-21),

13. 4497668 - Phosphating process for zinc-plated metals (1985-02-05),

14. 4384900 - Method of treating metal surfaces prior to phosphatization (1983-05-24),

15. 4326894 - Process for the production of conversion layers on metal surfaces by the (1982-04-27),

Gerhard Collardin GmbH is a leading manufacturer and distributor of high-quality industrial components and fittings. With over 50 years of experience, the company offers a wide range of products including valves, pumps, filters, and fittings for a variety of industries. Collardin is known for its innovation, reliability, and exceptional customer service.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

16 Patents

#83 in Koeln-Ehrenfeld

#2,632 in Germany

#36,684 in the World

Koeln-Ehrenfeld, Germany

Gerhard Collardin Gmbh

Forward Citations = 106

31 inventors:

Roland Morlock (4 out of 8 patents)

Karl-Heinz Gottwald (3 out of 11 patents)

Reinhard Opitz (3 out of 6 patents)

4. Raschad Mady (3 out of 6 patents)

5. Lutz Schellenberg (3 out of 3 patents)

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