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For the Inventor, By the Inventor

Cologne, Germany

Madaus Ag


USPTO Granted Patents = 8

Forward Citations = 22

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18 inventors (with patents filed for the assignee):

goldMedal Wolf Grimminger (5 out of 8 patents)

silverMedal Helga Zaeske (5 out of 7 patents)

bronzeMedal Klaus Witthohn (4 out of 9 patents)

4.  Alfons Carcasona (4 out of 5 patents)

5.  Pentti Hietala (2 out of 5 patents)

6.  Hans Lentzen (1 out of 6 patents)

7.  Pierre Potier (1 out of 33 patents)

8.  Pentti Hêitala (1 out of 1 patent)

9.  Wilfried Wachter (1 out of 3 patents)

10.  Karl P Odenthal (1 out of 3 patents)

11.  Klaus Goler (1 out of 1 patent)

12.  Franz-Josef Roth (1 out of 1 patent)

13.  Herbert Rohrig (1 out of 2 patents)

14.  Roger Nolte (1 out of 1 patent)

15.  Pentti Heitala (1 out of 1 patent)


8 patents:

1. 6624192 - Process for production of diacetylrhein (2003-09-23),
2. 6020384 - Process for the manufacture of flavanolignan preparation with improved (2000-02-01),
3. 5714473 - Use of flavolignans as adjuvants in tumour therapy (1998-02-03),
4. 5710260 - Method of extracting sennosides A, B and A1 (1998-01-20),
5. 5393898 - Method of preparing diacetyl rhein (1995-02-28),
6. 5391775 - Process for production of diacetylrhein (1995-02-21),
7. 5159080 - Indole compounds, a process for their preparation, and pharmaceutical (1992-10-27),
8. 5085074 - Test device for determining adhesive strength of lacquer on a tube (1992-02-04),
Company Overview
Madaus Ag is a global pharmaceutical company specializing in the development and production of innovative healthcare products. With a strong focus on research and development, Madaus Ag aims to improve the health and well-being of patients worldwide. The company's product portfolio includes a wide range of pharmaceuticals, nutraceuticals, and medical devices. Madaus Ag is committed to high quality standards and strives to provide effective and safe solutions for various health issues.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#54 in Cologne

#4,421 in Germany

Cologne, DE
Cologne, Germany

Madaus Ag

Forward Citations = 22

18 inventors:

goldMedal Wolf Grimminger (5 out of 8 patents)

silverMedal Helga Zaeske (5 out of 7 patents)

bronzeMedal Klaus Witthohn (4 out of 9 patents)

4.  Alfons Carcasona (4 out of 5 patents)

5.  Pentti Hietala (2 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Madaus Ag. Retrieved from https://idiyas.com/company/madaus-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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