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For the Inventor, By the Inventor

Düsseldorf, Germany

Feldmuehle Aktiengesellschaft

Calculating rank
USPTO Granted Patents = 19

Forward Citations = 245

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31 inventors (with patents filed for the assignee):

goldMedal Wolfgang Burger (3 out of 3 patents)

silverMedal Ulf Dworak (3 out of 15 patents)

bronzeMedal Kilian Friederich (2 out of 13 patents)

4.  Hans Olapinski (2 out of 21 patents)

5.  Alexander Gausa (2 out of 2 patents)

6.  Otto Eder (1 out of 5 patents)

7.  Dirk Rogowski (1 out of 3 patents)

8.  Dieter Dippel (1 out of 1 patent)

9.  Claus Dunklau (1 out of 1 patent)

10.  Erwin Roos (1 out of 1 patent)

11.  Harald Kraft (1 out of 1 patent)

12.  Wilhelm Kluter (1 out of 1 patent)

13.  Harry Krohn (1 out of 1 patent)

14.  Klaus H Thormeier (1 out of 1 patent)

15.  Henning Brandin (1 out of 1 patent)


19 patents:

1. 5139371 - Clamp for circular cutting tool (1992-08-18),
2. 5097955 - Transparent wrapping for bulk goods (1992-03-24),
3. 5092082 - Apparatus and method for laminated grinding disks employing vibration (1992-03-03),
4. 5033916 - High-speed milling or drilling heads (1991-07-23),
5. 5024977 - Combination of two sliding or sealing elements and a method for (1991-06-18),
6. 5006020 - Cutter insert for machining (1991-04-09),
7. 4975397 - Sintered molding, a method for producing it and its use (1990-12-04),
8. 4933568 - Device for testing web-like planar structures moving at high speed (1990-06-12),
9. 4895815 - Sintered form body (1990-01-23),
10. 4879000 - Process for determining dimension errors (1989-11-07),
11. 4813699 - Ski (1989-03-21),
12. 4789650 - Cutting tool insert (1988-12-06),
13. 4789433 - Skimming blade with wave shaped troughs for a papermaking machine (1988-12-06),
14. 4728582 - Ceramic sliding element with aluminum oxide and silicon nitride members (1988-03-01),
15. 4721651 - Microcapsules having capsule walls formed of aliphatic diisocyanate and (1988-01-26),
Company Overview
Feldmuehle Aktiengesellschaft, based in Düsseldorf, specializes in the production of high-quality paper products, focusing on sustainable and innovative solutions for various industries. The company is recognized for its expertise in developing specialty papers, including those used in packaging, labels, and graphic applications. With a commitment to environmental responsibility, Feldmuehle integrates advanced technologies in its manufacturing processes, aiming to meet the evolving needs of its global clientele while promoting sustainability in the paper industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

19 Patents

#35 in Düsseldorf

#2,296 in Germany

#32,705 in the World

Düsseldorf, DE
Düsseldorf, Germany

Feldmuehle Aktiengesellschaft

Forward Citations = 245

31 inventors:

goldMedal Wolfgang Burger (3 out of 3 patents)

silverMedal Ulf Dworak (3 out of 15 patents)

bronzeMedal Kilian Friederich (2 out of 13 patents)

4.  Hans Olapinski (2 out of 21 patents)

5.  Alexander Gausa (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Feldmuehle Aktiengesellschaft. Retrieved from https://idiyas.com/company/feldmuehle-ag

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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