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USPTO Data Jan 1 1976 - Dec 9 2025
5 Patents
#2 in Frechen
#6,010 in Germany
Quarzwerke Gmbh
Forward Citations = 10
27 inventors:
Quarzwerke Gmbh
CIPO Patents = 11
EPO Patents = 9
Trademarks = 10
Forward Citations = 10
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27 inventors (with patents filed for the assignee):
Jörg Ulrich Zilles (3 out of 3 patents)
Dirk Kruber (1 out of 1 patent)
Arno Seeboth (1 out of 5 patents)
4. Ralf Ruhmann (1 out of 9 patents)
5. Olaf Mühling (1 out of 3 patents)
6. Michael Riess (1 out of 1 patent)
7. Nicola Panic (1 out of 1 patent)
8. Norbert Fenten (1 out of 2 patents)
9. Wilfried Wolf (1 out of 1 patent)
10. Manfred Fischer (1 out of 1 patent)
11. Horst Peterling (1 out of 2 patents)
12. Klaus Keuser (1 out of 1 patent)
13. Johannes Kaiser (1 out of 1 patent)
14. Wilheim Wust (1 out of 1 patent)
15. Max Kellermann (1 out of 1 patent)
5 patents:
Quarzwerke GmbH is a leading supplier of high-quality industrial minerals. With over 130 years of experience, the company specializes in the extraction and processing of quartz, feldspar, and other minerals. Quarzwerke offers a wide range of products for various industries, including glass, ceramics, and construction. The company is known for its commitment to sustainability and environmental responsibility.
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11 patents (CIPO):
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9 patents (EPO):
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