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Seelze, Germany

Riedel-De Haen Aktiengesellschaft

USPTO Granted Patents = 39

Trademarks = 6

Forward Citations = 310

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45 inventors (with patents filed for the assignee):

Eugen Scholz (8 out of 9 patents)

Wolfgang Lindner (3 out of 13 patents)

Horst Schmand (3 out of 4 patents)

4. Gunter Bartels (3 out of 4 patents)

5. Reinhard Knieps (3 out of 3 patents)

6. Wolfgang Dannenberg (3 out of 3 patents)

7. Bernd Schonfeld (3 out of 3 patents)

8. Ralph Lonsky (2 out of 3 patents)

9. Lutz Uwe Lehmann (2 out of 3 patents)

10. Erich Taschenbrecker (2 out of 3 patents)

11. Andreas Winterfeldt (2 out of 4 patents)

12. Wolfgang Hirsch (2 out of 2 patents)

13. Karl Heinrich Lieser (2 out of 3 patents)

14. Peter Burba (2 out of 2 patents)

15. Karl Franz (2 out of 2 patents)

Core Competencies:

Karl Fischer Titration

Fluorinated Compounds

Microbicidal Agents

Diagnostic Agents

Liquid Preservatives

Ion Exchange Compounds

Chromatography Columns

Phosphor Coatings

Benzophenone Stabilizers

Adipose Tissue Analysis

Grinding Disks

Concrete Treatment

39 patents: Sort by Forward Citations

1. 6261753 - Use of indolenine-cyaninedisulphonic acid derivatives (2001-07-17),

2. 5747233 - Use of indoleine-cyaninedisulphonic acid derivatives (1998-05-05),

3. 5744638 - Process for the preparation of haloanthranilic acids (1998-04-28),

4. 5597701 - Process for determining androstenone contents in adipose tissues (1997-01-28),

5. 5567618 - Karl Fischer reagent (1996-10-22),

6. 5480898 - Storage-stable aqueous solutions of isothiazolin-3-ones (1996-01-02),

7. 5466606 - Use of N-methylformamide as solvent for the Karl Fischer titration (1995-11-14),

8. 5430202 - Process for the preparation of substantially fluorinated alkyl bromides (1995-07-04),

9. 5401662 - Method and reagent for the determination of water (1995-03-28),

10. 5354869 - 3,6-bis-(2'-methoxyphenyl)-2,5-dihydro-2,5-dimethyl-pyrrolo (1994-10-11),

11. 5336818 - Process for the preparation of substantially fluorinated alkyl bromides (1994-08-09),

12. 5292413 - Catholyte for the Karl Fischer coulometric water determination (1994-03-08),

13. 5160666 - Liquid preservatives (1992-11-03),

14. 5139955 - Reagent, cell and method for the coulometric determination of water (1992-08-18),

15. 5125953 - Use of a microbicidal agent for the treatment of concrete roof tiles (1992-06-30),

Company Overview

Riedel-De Haen Aktiengesellschaft is a prominent player in the field of chemical and pharmaceutical development, specializing in the production of high-quality reagents and intermediates. The company focuses on providing innovative solutions for research and development in various sectors, including pharmaceuticals, biotechnology, and agrochemicals. With a strong emphasis on quality and precision, Riedel-De Haen serves a global clientele, contributing significantly to advancements in chemical synthesis and analytical chemistry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

39 Patents

#1 in Seelze

#1,305 in Germany

#17,465 in the World

Seelze, Germany

Riedel-De Haen Aktiengesellschaft

Forward Citations = 310

45 inventors:

Eugen Scholz (8 out of 9 patents)

Wolfgang Lindner (3 out of 13 patents)

Horst Schmand (3 out of 4 patents)

4. Gunter Bartels (3 out of 4 patents)

5. Reinhard Knieps (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Riedel-De Haen Aktiengesellschaft. Retrieved from https://idiyas.com/company/riedel-de-haen-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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