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For the Inventor, By the Inventor

Duisburg, Germany

Sachtleben Chemie Gmbh


USPTO Granted Patents = 31

% Expired Patents = 45.2


Trademarks = 3

Forward Citations = 122

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54 inventors (with patents filed for the assignee):

goldMedal Djamschid Amirzadeh-Asl (9 out of 11 patents)

silverMedal Bernd Hirthe (6 out of 7 patents)

bronzeMedal Bernd Rohe (5 out of 7 patents)

4.  Frank Pfluecker (4 out of 9 patents)

5.  Sonja Grothe (4 out of 6 patents)

6.  Michael Wedler (4 out of 4 patents)

7.  Jochen Winkler (4 out of 8 patents)

8.  Peter Ebbinghaus (3 out of 3 patents)

9.  Stephan John (3 out of 3 patents)

10.  Thomas Rentschler (3 out of 6 patents)

11.  Elke Hirschberg (3 out of 3 patents)

12.  Petra Fritzen (2 out of 5 patents)

13.  Jörg Hocken (2 out of 3 patents)

14.  Elke Gosch (2 out of 2 patents)

15.  Jens Kohnert (2 out of 2 patents)


Core Competencies:
Barium Sulfate
Titanium Dioxide
UV Protection
Metal Oxide
Nanoparticles
Polymeric Materials
Inorganic Solids
Catalyst Preparation
Functionalized Particles
Coated Particles
Thermoplastic Additives
Durability Improvement

31 patents:

1. 9566565 - Catalyst material and process for the production thereof (2017-02-14),
2. 9481581 - Process for the production of a storage-stable barium sulphate having good dispersibility (2016-11-01),
3. 9309272 - Metal oxide particles aftertreated with organic phosphorus compounds (2016-04-12),
4. 9212194 - Functionalized particles and use thereof (2015-12-15),
5. 9163130 - Method for the production of ZnS particles having a metal oxide coating and a cobalt content, products obtained thereby, and use of said products (2015-10-20),
6. 9109267 - Process for the introduction of inorganic solids into hot liquid melts (2015-08-18),
7. 8883215 - Metal oxide particles aftertreated with organic phosphorus compounds (2014-11-11),
8. 8758501 - Nanoparticulate UV protectant with silicon dioxide coating (2014-06-24),
9. 8753684 - Particulate UV protection agent (2014-06-17),
10. 8715827 - Porous spherical titanium dioxide (2014-05-06),
11. 8540816 - Aggregate and filler extracted from slag (2013-09-24),
12. 8410207 - Thermoplastic, polymeric materials providing high IR absorption, method for the production thereof, and use thereof (2013-04-02),
13. 8383712 - Plastic comprising zinc sulphide (2013-02-26),
14. 8287837 - Titanium-containing additive (2012-10-16),
15. 8163828 - Additive for polymers and process for preparation thereof (2012-04-24),
Company Overview
Sachtleben Chemie GmbH, headquartered in Duisburg, Germany, specializes in the development and production of high-performance titanium dioxide and other specialty chemicals. The company focuses on innovative solutions for various industries, including coatings, plastics, and cosmetics. With a commitment to sustainability and advanced technology, Sachtleben aims to enhance product performance while minimizing environmental impact. Their expertise in chemical engineering and materials science positions them as a key player in the global chemical market.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

31 Patents

#12 in Duisburg

#1,565 in Germany

#21,238 in the World

Duisburg, DE
Duisburg, Germany

Sachtleben Chemie Gmbh

Forward Citations = 122

54 inventors:

goldMedal Djamschid Amirzadeh-Asl (9 out of 11 patents)

silverMedal Bernd Hirthe (6 out of 7 patents)

bronzeMedal Bernd Rohe (5 out of 7 patents)

4.  Frank Pfluecker (4 out of 9 patents)

5.  Sonja Grothe (4 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sachtleben Chemie Gmbh. Retrieved from https://idiyas.com/company/sachtleben-chemie

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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