For the Inventor, By the Inventor

Enter assignee name

Nuremberg, Germany

Ludwig Heumann & Co. Gmbh

Calculating rank

USPTO Granted Patents = 23

Forward Citations = 62

Loading Chart...

Loading Chart...

24 inventors (with patents filed for the assignee):

Helmut Schickaneder (16 out of 34 patents)

Kurt H Ahrens (15 out of 26 patents)

Istvan Szelenyi (12 out of 33 patents)

4. Peter Morsdorf (8 out of 18 patents)

5. Stefan Postius (7 out of 7 patents)

6. Rolf Herter (6 out of 12 patents)

7. Heidrun Engler (5 out of 14 patents)

8. Walter Otto Liebenow (5 out of 5 patents)

9. Jaroslav Prikryl (3 out of 3 patents)

10. Kay Brune (2 out of 18 patents)

11. Walter Schunack (2 out of 17 patents)

12. Istvan Szeleny (2 out of 2 patents)

13. Edgar Fritschi (2 out of 2 patents)

14. Herbert Hansen (2 out of 2 patents)

15. Kurt Wegner (2 out of 2 patents)

23 patents: Sort by Forward Citations

1. 5025016 - Pyrimidine-thioalkyl pyridine derivatives, medicaments containing these (1991-06-18),

2. 4866066 - Thiomethylpyridine derivatives and their use for eliciting a (1989-09-12),

3. 4810715 - Imidazoyl-substituted thiomethylpyridine derivatives, method of (1989-03-07),

4. 4738960 - 1,3,4-Thiadiazole derivatives and pharmaceutical preparations useful as (1988-04-19),

5. 4732986 - Benzothiazole derivatives, processes for their preparation and (1988-03-22),

6. 4727081 - 3,4-Diazole derivatives and pharmaceutical preparations containing these (1988-02-23),

7. 4697035 - Process for the preparation of basically substituted phenylacetonitriles (1987-09-29),

8. 4671914 - Production of granulates by using a tabletting machine (1987-06-09),

9. 4666921 - Pyrazole derivatives, processes for their preparation and pharmaceutical (1987-05-19),

10. 4659721 - Alkanol derivatives, and pharmaceutical preparation containing these (1987-04-21),

11. 4656180 - Diamine derivatives and pharmaceutical preparations containing these (1987-04-07),

12. 4647684 - Process for the production of (1987-03-03),

13. 4634700 - 1,3-dioxolanyl derivatives, a process for their preparation, their use (1987-01-06),

14. 4600721 - Pharmaceutical preparation (1986-07-15),

15. 4599346 - Propan-2-ol derivatives, a process for their production and medicaments (1986-07-08),

Company Overview

Ludwig Heumann & Co. GmbH, based in Nuremberg, Germany, specializes in the development and manufacturing of high-quality precision components and systems for various industrial applications. The company focuses on advanced engineering solutions, particularly in the fields of mechanical and electrical engineering. With a commitment to innovation, Ludwig Heumann & Co. integrates cutting-edge technologies to enhance product performance and reliability, serving a diverse clientele across multiple sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

23 Patents

#19 in Nuremberg

#1,988 in Germany

#27,744 in the World

Nuremberg, Germany

Ludwig Heumann & Co. Gmbh

Forward Citations = 62

24 inventors:

Helmut Schickaneder (16 out of 34 patents)

Kurt H Ahrens (15 out of 26 patents)

Istvan Szelenyi (12 out of 33 patents)

4. Peter Morsdorf (8 out of 18 patents)

5. Stefan Postius (7 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ludwig Heumann & Co. Gmbh. Retrieved from https://idiyas.com/company/ludwig-heumann-andcompany

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]

Loading…