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Frankfurt, Germany

Chemetall Gmbh

Calculating rank

USPTO Granted Patents = 175

% Expired Patents = 28.0

CIPO Patents = 39

EPO Patents = 131

Trademarks = 28

Forward Citations = 495

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211 inventors (with patents filed for the assignee):

Ulrich Wietelmann (37 out of 73 patents)

Thomas Kolberg (22 out of 29 patents)

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:

Phosphating

Corrosion Protection

Coating Methods

Surface Treatment

Aluminum

Steel

Polymeric Coatings

Pickling

Sealing Compounds

Metal Pretreatment

Aqueous Compositions

Chemical Conversion

175 patents: Sort by Forward Citations

1. 12680048 - One-step pretreatment method of metallic substrates for metal cold forming (2026-07-14),

2. 12584229 - Method for applying a conversion coating with an aquous pickling composition comprising an aminophosphonic acid and a polymer (2026-03-24),

3. 12492322 - Polyurea coating systems as sealants for the exterior of fuel tanks (2025-12-09),

4. 12460304 - Phosphate-free cleaner for metallic surfaces with reduced pickling erosion (2025-11-04),

5. 12428567 - Method for purging paint circuits and waterborne purge cleaner (2025-09-30),

6. 12338850 - Device and method for filling seal caps (2025-06-24),

7. 12312693 - Method for treating surfaces of aluminum containing substrates (2025-05-27),

8. 12203173 - Alternative composition and alternative method for effectively phosphating metal surfaces (2025-01-21),

9. 12195575 - Compositions and methods for metal pre-treatment (2025-01-14),

10. 12139690 - Simplified method for pretreating metal substrates for cold forming and reactive lubricant therefor (2024-11-12),

11. 12060160 - Plastic caps filled with sealing compound as combined protection against fuel and hydraulic fluid and against lightning strikes (2024-08-13),

12. 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),

13. 12023709 - Method of applying a sulphur-containing sealing compound, apparatus therefor, correspondingly treated aerospace vehicle and use thereof (2024-07-02),

14. 12006445 - Anti-rust composition for metal surface and a method of anti-rust treatment on metal surface (2024-06-11),

15. 11958989 - Method for treating surfaces of aluminum containing substrates (2024-04-16),

Company Overview

Chemetall GmbH, headquartered in Frankfurt, Germany, specializes in advanced metal surface treatment solutions. The company focuses on technologies such as phosphating, corrosion protection, and various coating methods tailored for aluminum, steel, and polymeric surfaces. With a commitment to enhancing surface performance, Chemetall develops innovative processes that improve durability and longevity of metal components across diverse industries, including automotive and manufacturing. Their expertise in pickling and surface treatment positions them as a leader in the field.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

175 Patents

#17 in Frankfurt

#345 in Germany

#4,754 in the World

Frankfurt, Germany

Chemetall Gmbh

Forward Citations = 495

211 inventors:

Ulrich Wietelmann (37 out of 73 patents)

Thomas Kolberg (22 out of 29 patents)

Manfred Walter (20 out of 20 patents)

4. Uwe Lischka (18 out of 26 patents)

5. Toshio Inbe (14 out of 28 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Chemetall Gmbh. Retrieved from https://idiyas.com/company/chemetall

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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