Trademarks = 1

Forward Citations = 97

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10 inventors (with patents filed for the assignee):

Eduard Bergmann (4 out of 10 patents)

Volker Speidel (4 out of 5 patents)

Werner E Berginski (4 out of 4 patents)

4. Klaus Buhle (1 out of 4 patents)

5. Ralf Eifer (1 out of 1 patent)

6. Friedhelm Winter (1 out of 1 patent)

7. Lothar Worlitz (1 out of 1 patent)

8. Werner-Ernst Berginski (1 out of 3 patents)

9. Klaus Kassner (1 out of 1 patent)

10. Wolfgang Bonczek (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 4354155 - Circuit arrangement for monitoring a current-consuming load (1982-10-12),

2. 4339667 - Automotive vehicle switching electric circuit (1982-07-13),

3. 4336428 - Steering column assembly switch for automotive vehicles (1982-06-22),

4. 4317104 - Precision resistor for measurement purposes (1982-02-23),

5. 4307301 - Electric circuit arrangement for replacement of an electric switch, with (1981-12-22),

6. 4287786 - Steering column jacket on the steering column of motor vehicles (1981-09-08),

7. 4286126 - Ignition switch (1981-08-25),

8. 4281226 - Ignition switch (1981-07-28),

9. 4251723 - Opto-electronical switching device, specially for motor vehicles (1981-02-17),

10. 4149048 - Motor vehicle signal switch (1979-04-10),

Company Overview

Firma Leopold Kostal is a prominent player in the automotive and industrial electronics sectors, specializing in the development and manufacturing of innovative electrical and electronic systems. The company focuses on areas such as automotive connectivity, energy management, and advanced driver assistance systems, catering to a global market. With a commitment to research and development, Kostal continually enhances its technological capabilities to meet the evolving demands of the automotive industry and beyond.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

10 Patents

#8 in Luedenscheid

#3,755 in Germany

#56,092 in the World

Luedenscheid, Germany

Firma Leopold Kostal

Forward Citations = 97

10 inventors:

Eduard Bergmann (4 out of 10 patents)

Volker Speidel (4 out of 5 patents)

Werner E Berginski (4 out of 4 patents)

4. Klaus Buhle (1 out of 4 patents)

5. Ralf Eifer (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Firma Leopold Kostal. Retrieved from https://idiyas.com/company/firma-leopold-kostal

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]