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For the Inventor, By the Inventor

Essen, Germany

Evonik Operations Gmbh


USPTO Granted Patents = 674

% Expired Patents = 7.0



Trademarks = 268

Forward Citations = 766

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1,399 inventors (with patents filed for the assignee):

goldMedal Robert Franke (45 out of 162 patents)

silverMedal Wilfried Knott (31 out of 125 patents)

bronzeMedal Horst Dudzik (29 out of 46 patents)

4.  Emmanouil Spyrou (19 out of 66 patents)

5.  Hans Henning Wenk (18 out of 34 patents)

6.  Stephan Peitz (17 out of 40 patents)

7.  Guido Stochniol (17 out of 61 patents)

8.  Dirk Fridag (16 out of 91 patents)

9.  Philippe Favresse (16 out of 22 patents)

10.  Michael Fiedel (16 out of 27 patents)

11.  Steffen Krill (15 out of 59 patents)

12.  Frauke Henning (14 out of 40 patents)

13.  Johannes Knossalla (14 out of 18 patents)

14.  Peter Kucmierczyk (13 out of 22 patents)

15.  Markus Hallack (13 out of 19 patents)


Core Competencies:
Polyurethane Systems
Electrochemical Oxidation
Heat Transfer Fluids
Polyamides
Phase Transfer Catalysis
Nanostructured Oxides
Silica-Based Materials
Biosurfactants
Functionalized Graphene
Coating Compositions
Polymer Electrolytes
Guanidino Acetic Acid

674 patents:

1. 12735379 - Compositions comprising n-nonanoic acid esters of xylitan and/or sorbitan (2026-09-15),
2. 12715957 - Epoxy curing agents and uses thereof (2026-08-25),
3. 12715939 - Process for preparing hydroxy-functionalized polybutadiene (2026-08-25),
4. 12715848 - Process for the diastereomerically pure preparation of DL/LD-methionylmethionine (2026-08-25),
5. 12703850 - Photostabilized compositions and a method for stabilizing photosensitive components (2026-08-11),
6. 12698376 - Depolymerization of polyurethanes under mild conditions (2026-08-04),
7. 12697356 - BACILLUS SUBTILIS STRAIN WITH PROBIOTIC ACTIVITY (2026-08-04),
8. 12692225 - Process for preparing 3-methylthiopropionaldehyde (2026-07-28),
9. 12691421 - Filter holder for extrusion of liposomes (2026-07-28),
10. 12691046 - Ester compositions (2026-07-28),
11. 12686739 - Epoxy-amine adduct (2026-07-21),
12. 12686694 - Method of extracting carbonic acid, aliphatic acids, esters and alcohols from an aqueous medium (2026-07-21),
13. 12680118 - Method for producing a biomass which can be easily broken down and which has an increased content of polyunsaturated fatty acids (2026-07-14),
14. 12679799 - Dielectric fluid compositions comprising low viscosity monoesters with improved low temperature performance (2026-07-14),
15. 12674030 - Silicone (meth)acrylates, process for their preparation and their use in curable compositions (2026-07-07),
Evonik Operations GmbH is a leading specialty chemical company that offers a wide range of products and solutions for various industries. With a focus on innovation and sustainability, Evonik strives to create value for its customers and contribute to a more sustainable future. Their website provides detailed information about their diverse product portfolio, research initiatives, corporate responsibility efforts, and more.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

Evonik Operations Gmbh
674 Patents

#3 in Essen

#76 in Germany

#1,469 in the World

Essen, DE
Essen, Germany

Evonik Operations Gmbh

Forward Citations = 766

1,399 inventors:

goldMedal Robert Franke (45 out of 162 patents)

silverMedal Wilfried Knott (31 out of 125 patents)

bronzeMedal Horst Dudzik (29 out of 46 patents)

4.  Emmanouil Spyrou (19 out of 66 patents)

5.  Hans Henning Wenk (18 out of 34 patents)

Please report any incorrect information to [email protected]
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