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For the Inventor, By the Inventor

Leverkusen, Germany

Bayer Chemicals Ag


USPTO Granted Patents = 14

% Expired Patents = 71.4


Forward Citations = 22

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42 inventors (with patents filed for the assignee):

goldMedal Albrecht Marhold (3 out of 245 patents)

silverMedal Wolfgang Ebenbeck (2 out of 10 patents)

bronzeMedal Udo Herrmann (2 out of 18 patents)

4.  Gerd-Volker Röschenthaler (1 out of 13 patents)

5.  Frank Linke (1 out of 26 patents)

6.  Thomas Geller (1 out of 12 patents)

7.  Hans-Christian Militzer (1 out of 32 patents)

8.  Hansjörg Grützmacher (1 out of 8 patents)

9.  Ulrich Meisen (1 out of 23 patents)

10.  Sabine Endert (1 out of 10 patents)

11.  Ulrich Feldhues (1 out of 27 patents)

12.  Georg Ronge (1 out of 21 patents)

13.  Otto Mauerer (1 out of 4 patents)

14.  Ronald Göbel (1 out of 6 patents)

15.  Holger Friedrich (1 out of 10 patents)


14 patents:

1. 7144455 - [object Object] (2006-12-05),
2. 7126119 - Method for marking sites (2006-10-24),
3. 7112696 - Preparation of phosphorus compounds (2006-09-26),
4. 7045662 - α, α-difluoroamines and difluoromethylene-α, α-diazo compounds (2006-05-16),
5. 7041852 - Perfluoroalkylanilines (2006-05-09),
6. 6916839 - Pyrazolylarylalkines (2005-07-12),
7. 6881830 - Metal complexes (2005-04-19),
8. 6881255 - Pigment preparations (2005-04-19),
9. 6803026 - Compacted carbon black pellets (2004-10-12),
10. 6787666 - Process for the preparation of isolated 3,4-diaminobenzenesulphonic acid (2004-09-07),
11. 6777556 - Process for preparing 2-haloalkylnicotinic acids (2004-08-17),
12. 6774163 - Flame retardants for polymers comprising a mixture of two different aryl phosphates, their preparation and their use (2004-08-10),
13. 6770766 - Polyamino acid-catalyzed process for the enantioselective epoixdation of &agr;,&bgr;-unsaturated enones and &agr;,&bgr;-unsaturated sulfones (2004-08-03),
14. 6768032 - Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid (2004-07-27),
Company Overview
Bayer Chemicals AG, headquartered in Leverkusen, Germany, is a prominent player in the global chemicals sector, focusing on the development and manufacturing of innovative chemical products. The company specializes in a diverse range of applications, including crop science, health care, and material science, leveraging advanced research and technology to create sustainable solutions. Bayer's commitment to innovation drives its efforts in enhancing agricultural productivity and improving quality of life through its extensive portfolio of chemical solutions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

14 Patents

#21 in Leverkusen

#2,911 in Germany

#42,290 in the World

Leverkusen, DE
Leverkusen, Germany

Bayer Chemicals Ag

Forward Citations = 22

42 inventors:

goldMedal Albrecht Marhold (3 out of 245 patents)

silverMedal Wolfgang Ebenbeck (2 out of 10 patents)

bronzeMedal Udo Herrmann (2 out of 18 patents)

4.  Gerd-Volker Röschenthaler (1 out of 13 patents)

5.  Frank Linke (1 out of 26 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Bayer Chemicals Ag. Retrieved from https://idiyas.com/company/bayer-chemicals-ag

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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