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For the Inventor, By the Inventor

Frankfurt-am-Main, Germany

Chemetall Gmbh


USPTO Granted Patents = 173



Trademarks = 29

Forward Citations = 483

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209 inventors (with patents filed for the assignee):

goldMedal Ulrich Wietelmann (37 out of 72 patents)

silverMedal Thomas Kolberg (22 out of 29 patents)

bronzeMedal Manfred Walter (20 out of 20 patents)

4.  Uwe Lischka (18 out of 26 patents)

5.  Toshio Inbe (14 out of 28 patents)

6.  Ute Emmel (12 out of 28 patents)

7.  Martin Droll (11 out of 11 patents)

8.  Wolfgang Bremser (10 out of 13 patents)

9.  Oliver Seewald (10 out of 11 patents)

10.  Michael Schwamb (10 out of 10 patents)

11.  Daniel Wasserfallen (10 out of 10 patents)

12.  Aliaksandr Frenkel (10 out of 10 patents)

13.  Vera Sotke (10 out of 10 patents)

14.  Ron Eilinghoff (9 out of 9 patents)

15.  Lars Schachtsiek (8 out of 8 patents)


Core Competencies:
Phosphate-Free Cleaners
Metal Surface Treatment
Corrosion Protection
Aluminum Pretreatment
Sealing Compounds
Anti-Rust Compositions
Coating Agents
Surface Conditioning
Dynamic Metering
Nanocrystalline Coatings
Waterborne Purge Cleaners
Sulfur-Containing Polymers

173 patents:

1. 12492322 - Polyurea coating systems as sealants for the exterior of fuel tanks (2025-12-09),
2. 12460304 - Phosphate-free cleaner for metallic surfaces with reduced pickling erosion (2025-11-04),
3. 12428567 - Method for purging paint circuits and waterborne purge cleaner (2025-09-30),
4. 12338850 - Device and method for filling seal caps (2025-06-24),
5. 12312693 - Method for treating surfaces of aluminum containing substrates (2025-05-27),
6. 12203173 - Alternative composition and alternative method for effectively phosphating metal surfaces (2025-01-21),
7. 12195575 - Compositions and methods for metal pre-treatment (2025-01-14),
8. 12139690 - Simplified method for pretreating metal substrates for cold forming and reactive lubricant therefor (2024-11-12),
9. 12060160 - Plastic caps filled with sealing compound as combined protection against fuel and hydraulic fluid and against lightning strikes (2024-08-13),
10. 12043753 - Process for corrosion-protecting pretreatment of a metallic surface containing steel, galvanized steel, aluminum, an aluminum alloy, magnesium and/or a zinc-magnesium alloy (2024-07-23),
11. 12023709 - Method of applying a sulphur-containing sealing compound, apparatus therefor, correspondingly treated aerospace vehicle and use thereof (2024-07-02),
12. 12006445 - Anti-rust composition for metal surface and a method of anti-rust treatment on metal surface (2024-06-11),
13. 11958989 - Method for treating surfaces of aluminum containing substrates (2024-04-16),
14. 11686000 - Composition and method for the chromium-free pretreatment of aluminium surfaces (2023-06-27),
15. 11643731 - Method for nickel-free phosphating metal surfaces (2023-05-09),
Chemetall GmbH is a leading global provider of specialty chemicals and surface treatments for various industries including automotive, aerospace, and electronics. With over 200 years of experience, Chemetall offers innovative solutions for corrosion protection, metal pretreatment, and surface finishing. Their products and processes ensure the highest quality and reliability for their customers' applications. Visit their website for more information and to explore their extensive product portfolio.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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173 Patents

#14 in Frankfurt-am-Main

#383 in Germany

#4,664 in the World

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Frankfurt-am-Main, Germany

Chemetall Gmbh

Forward Citations = 483

209 inventors:

goldMedal Ulrich Wietelmann (37 out of 72 patents)

silverMedal Thomas Kolberg (22 out of 29 patents)

bronzeMedal Manfred Walter (20 out of 20 patents)

4.  Uwe Lischka (18 out of 26 patents)

5.  Toshio Inbe (14 out of 28 patents)

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