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For the Inventor, By the Inventor

Friedrichshafen, Germany

Rt-filtertechnik Gmbh


USPTO Granted Patents = 15


Trademarks = 1

Forward Citations = 20

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19 inventors (with patents filed for the assignee):

goldMedal Gerhard Stehle (8 out of 9 patents)

silverMedal Marco Bautz (6 out of 6 patents)

bronzeMedal Frank Oberli (3 out of 3 patents)

4.  Dirk Schönfeld (3 out of 3 patents)

5.  Dirk Schoenfeld (2 out of 2 patents)

6.  Andreas Steiche (1 out of 1 patent)

7.  Robert Kessel (1 out of 1 patent)

8.  Alexander Wohlers (1 out of 4 patents)

9.  Uwe Fries (1 out of 1 patent)

10.  Carsten Grobe (1 out of 1 patent)

11.  Michael Otto Sakraschinsky (1 out of 25 patents)

12.  John Otto (1 out of 2 patents)

13.  Mathias Dieter (1 out of 1 patent)

14.  Florentin Van Uffelen (1 out of 2 patents)

15.  Alexander Backes (1 out of 1 patent)


15 patents:

1. 12350607 - Filter device (2025-07-08),
2. 12121832 - Filter device (2024-10-22),
3. 12109515 - Filter device (2024-10-08),
4. 11806644 - Filter device (2023-11-07),
5. 11642611 - Filter element (2023-05-09),
6. RE49220 - Filter element (2022-09-26),
7. 11135531 - Filter device (2021-10-05),
8. 10786775 - Separating device (2020-09-29),
9. 10617981 - Filter device for fluids (2020-04-14),
10. 10478759 - Filter element (2019-11-19),
11. 10421031 - Filter device (2019-09-24),
12. 10406457 - Filter device (2019-09-10),
13. 10369499 - Filter device and filter element (2019-08-06),
14. 10213709 - Filter element and hydraulic circuit with such a filter element (2019-02-26),
15. 9849408 - Filter element (2017-12-26),
Rt-filtertechnik GmbH is a leading manufacturer of high-quality filtration systems. With many years of experience in the industry, we provide innovative solutions for various industries including automotive, aerospace, and food processing. Our products are known for their reliability, efficiency, and durability, making us a trusted partner for our clients worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

15 Patents

#9 in Friedrichshafen

#2,773 in Germany

#38,730 in the World

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Friedrichshafen, Germany

Rt-filtertechnik Gmbh

Forward Citations = 20

19 inventors:

goldMedal Gerhard Stehle (8 out of 9 patents)

silverMedal Marco Bautz (6 out of 6 patents)

bronzeMedal Frank Oberli (3 out of 3 patents)

4.  Dirk Schönfeld (3 out of 3 patents)

5.  Dirk Schoenfeld (2 out of 2 patents)

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