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Baarn, Netherlands

Polygram International Holding B.v.

USPTO Granted Patents = 14

CIPO Patents = 1

Forward Citations = 402

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18 inventors (with patents filed for the assignee):

Jozef M Duurland (5 out of 7 patents)

Hermann Koop (3 out of 12 patents)

Hermann Grobecker (2 out of 11 patents)

4. Johannes J Roering (2 out of 5 patents)

5. Masashi Ito (2 out of 11 patents)

6. Hans Schuddekopf (2 out of 3 patents)

7. Karsten Benne (2 out of 2 patents)

8. Gilbert E Mestdagh (2 out of 2 patents)

9. Michiel G Van Den Dungen (1 out of 2 patents)

10. Norbert C Vollmann (1 out of 24 patents)

11. Bjorn Bluthgen (1 out of 5 patents)

12. Bernard H Timmer (1 out of 1 patent)

13. Henning Wilhelm (1 out of 1 patent)

14. Dieter Schulz (1 out of 2 patents)

15. Sinnighe J Bos (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 5700500 - Two-stage injection-molding machine (1997-12-23),

2. 5404251 - Auto reverse cassette deck capable of recording/reproducing with two (1995-04-04),

3. 5148330 - Method of and arrangement for obtaining prerecorded digital music (1992-09-15),

4. 5135149 - Apparatus for the storage and transport of an elongate endless tape (1992-08-04),

5. 4882637 - Copying apparatus for copying a magnetic pattern from a master magnetic (1989-11-21),

6. 4868683 - Method of aligning objects by detecting a reference picture line therein (1989-09-19),

7. 4864439 - Apparatus drawer for unambiguously receiving a digital audio tape (1989-09-05),

8. 4805770 - Cassette with tray ejection means (1989-02-21),

9. 4750173 - Method of transmitting audio information and additional information in (1988-06-07),

10. 4747093 - Disc-shaped information carrier and method of manufacturing it (1988-05-24),

11. 4745690 - Method of replenishing and/or preparing treating liquids (1988-05-24),

12. 4726006 - Disc-shaped information carrier and method of manufacturing it (1988-02-16),

13. 4722439 - Disc receiving tray and a combination of such a tray with a storage (1988-02-02),

14. 4681280 - Magnetic-tape cassette with stretched liner arrangement (1987-07-21),

Polygram International Holding B.v. is a global entertainment company that specializes in music and film production. With a rich history dating back to the 1960s, Polygram has been a prominent player in the industry, releasing hits from artists like Queen, ABBA, and U2. The company also has a strong presence in the film industry, with successful releases such as Four Weddings and a Funeral and Trainspotting. Polygram is committed to bringing high-quality entertainment to audiences around the world.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

14 Patents

#1 in Baarn

#476 in Netherlands

#40,882 in the World

Baarn, Netherlands

Polygram International Holding B.v.

Forward Citations = 402

18 inventors:

Jozef M Duurland (5 out of 7 patents)

Hermann Koop (3 out of 12 patents)

Hermann Grobecker (2 out of 11 patents)

4. Johannes J Roering (2 out of 5 patents)

5. Masashi Ito (2 out of 11 patents)

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