Forward Citations = 30

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10 inventors (with patents filed for the assignee):

Willy Minner (1 out of 19 patents)

Karl-Heinz Reimer (1 out of 1 patent)

Willfried Krautkramer (1 out of 1 patent)

4. Manfred Agricola (1 out of 1 patent)

5. Erhard Reitz (1 out of 1 patent)

6. Rainer Rodenheber (1 out of 1 patent)

7. Helmut Barkow (1 out of 2 patents)

8. Karl Frank (1 out of 1 patent)

9. Fritz Geppert (1 out of 1 patent)

10. Kurt Stalzer (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 4533793 - Wall exchange (1985-08-06),

2. 4503413 - Spool for transformer in power supply device (1985-03-05),

3. 4326108 - Hook switch for telephone instruments (1982-04-20),

4. 4326106 - Telephone amplifier circuit (1982-04-20),

5. 4245339 - Telecommunication switching network having a multistage reversed (1981-01-13),

Company Overview

Telefonbau und Normalzeit, GmbH is a leading provider of telecommunication and timekeeping solutions. With a history dating back to 1923, the company has established a reputation for quality and innovation in the industry. Their products and services range from telephone systems to precision timekeeping devices, serving a wide range of industries including telecommunications, transportation, and healthcare.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

5 Patents

#176 in

#6,098 in Germany

DE

Telefonbau Und Normalzeit, Gmbh

Forward Citations = 30

10 inventors:

Willy Minner (1 out of 19 patents)

Karl-Heinz Reimer (1 out of 1 patent)

Willfried Krautkramer (1 out of 1 patent)

4. Manfred Agricola (1 out of 1 patent)

5. Erhard Reitz (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Telefonbau Und Normalzeit, Gmbh. Retrieved from https://idiyas.com/company/telefonbau-und-normalzeit

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]