For the Inventor, By the Inventor

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Hamburg, Germany

Polygram Gmbh

USPTO Granted Patents = 17

Trademarks = 1

Forward Citations = 324

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25 inventors (with patents filed for the assignee):

Bjoern Bluethgen (3 out of 3 patents)

Hermann Koop (2 out of 12 patents)

Horst Soeding (2 out of 2 patents)

4. Adelbert Zielasek (2 out of 2 patents)

5. Frederik B Nusselder (2 out of 2 patents)

6. Hermann Grobecker (1 out of 11 patents)

7. Werner Heuer (1 out of 3 patents)

8. Horst-Christian Langowski (1 out of 3 patents)

9. Bjorn Bluthgen (1 out of 5 patents)

10. Harald Ahrens (1 out of 2 patents)

11. Klaus Hiemann (1 out of 1 patent)

12. Jost-Michael Haase (1 out of 1 patent)

13. Frank A Griffiths (1 out of 1 patent)

14. Joseph R Hankinson (1 out of 1 patent)

15. Joahann Becker (1 out of 1 patent)

17 patents: Sort by Forward Citations

1. 4874085 - Storage cassette for high storage density, disc-shaped information (1989-10-17),

2. 4665513 - Arrangement for error detection for disc-shaped information carriers (1987-05-12),

3. 4658392 - Optically readable, high storage density, information carrier (1987-04-14),

4. 4633458 - Disc-shaped, optically-readable information carrier having a protective (1986-12-30),

5. 4613751 - Conveyor system for disc magazine having an identifier disc (1986-09-23),

6. 4535888 - Storage cassette for two or more disk-shaped high memory density (1985-08-20),

7. 4501014 - Method for eliminating unwanted acoustic signals in audio programs to be (1985-02-19),

8. 4453158 - Method for encoding analog signals (1984-06-05),

9. 4445149 - Method for the joining, or mixing-in or fade-in of two audio digital (1984-04-24),

10. 4438522 - Method for encoding analog signals using PCM difference code word for (1984-03-20),

11. 4409169 - Method for manufacturing disk-shaped information carriers (1983-10-11),

12. 4367952 - Centering device for the manufacture of a center hole in disks (1983-01-11),

13. 4361898 - Digital synchronizing system (1982-11-30),

14. 4342635 - Anode case for a galvanic bath (1982-08-03),

15. 4272990 - Device for the measurement of acoustic reverberation time and method (1981-06-16),

Company Overview

Polygram GmbH, based in Hamburg, Germany, specializes in advanced technologies for the telecommunications and media sectors. The company focuses on developing innovative solutions that enhance digital communication and content delivery. With a commitment to research and development, Polygram is dedicated to pushing the boundaries of technology, ensuring high-quality services and products that meet the evolving needs of its clients in a rapidly changing digital landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

17 Patents

#59 in Hamburg

#2,493 in Germany

#35,887 in the World

Hamburg, Germany

Polygram Gmbh

Forward Citations = 324

25 inventors:

Bjoern Bluethgen (3 out of 3 patents)

Hermann Koop (2 out of 12 patents)

Horst Soeding (2 out of 2 patents)

4. Adelbert Zielasek (2 out of 2 patents)

5. Frederik B Nusselder (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Polygram Gmbh. Retrieved from https://idiyas.com/company/polygram

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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