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For the Inventor, By the Inventor

Ludwigsburg, Germany

Mann+hummel Gmbh


USPTO Granted Patents = 1,038

% Expired Patents = 28.2



Trademarks = 24

Forward Citations = 4,373

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886 inventors (with patents filed for the assignee):

goldMedal Thomas Jessberger (59 out of 76 patents)

silverMedal Klaus-Dieter Ruhland (59 out of 59 patents)

bronzeMedal Michael Kaufmann (49 out of 49 patents)

4.  Pascal Neef (47 out of 47 patents)

5.  Christian Thalmann (41 out of 43 patents)

6.  Mario Rieger (41 out of 45 patents)

7.  Frank Pflueger (41 out of 41 patents)

8.  Fabian Wagner (39 out of 39 patents)

9.  Robert Hasenfratz (39 out of 42 patents)

10.  Klemens Dworatzek (37 out of 42 patents)

11.  Karlheinz Muenkel (37 out of 38 patents)

12.  André Roesgen (37 out of 41 patents)

13.  Martin Weindorf (36 out of 47 patents)

14.  Guenter Jokschas (35 out of 41 patents)

15.  Daniel Schmid (33 out of 33 patents)


Core Competencies:
Air Treatment
Fluid Filters
Outdoor Air Purifier
Filter Element
Separation Component
Filter System
Heat Exchanger
Carbon Dioxide Reduction
Battery Housing
Cross Flow Filtration
Water Drainage Device
Acoustic Component

1,038 patents:

1. 12746499 - Filter element for a filter system having a resonator structure, and filter system having a resonator structure (2026-09-29),
2. 12746495 - Separating device with a separating element (2026-09-29),
3. 12728411 - Ion exchanger filter device and ion exchanger cartridge (2026-09-08),
4. 12728375 - Filter and clamping wedge for a filter (2026-09-08),
5. 12719067 - Humidifying device having channel plates and channel plate for humidifying device (2026-08-25),
6. 12685953 - Filter element, housing for a filter system, and filter system comprising a filter element and a housing (2026-07-21),
7. 12678721 - Liquid filter and filter element (2026-07-14),
8. 12661611 - Sorption filter device (2026-06-23),
9. 12658457 - Stack plate, stack plate device and humidifier (2026-06-16),
10. 12599864 - Air treatment system, method, vehicle and fleet for treating environment air (2026-04-14),
11. 12582930 - Secondary element and filter system (2026-03-24),
12. 12576357 - Filter housing of a filter for a fluid and filter (2026-03-17),
13. 12576355 - Outdoor air purifier including at least one filter element (2026-03-17),
14. 12558644 - Filter element for an air filter having a primary air outlet and a secondary air outlet, and an air filter and installation method (2026-02-24),
15. 12558638 - Filter for filtering fluid, bypass valve arrangement for a filter, and diffuser device for a filter (2026-02-24),
Mann+Hummel GmbH, headquartered in Ludwigsburg, Germany, is a leading expert in air filtration systems. The company specializes in the development and manufacturing of advanced air treatment solutions, including fluid filters, outdoor air purifiers, and filter elements. With a strong focus on enhancing air quality and reducing carbon dioxide emissions, Mann+Hummel is dedicated to innovation in separation components and filter systems, contributing significantly to environmental sustainability and improved air management across various applications.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Mann+hummel Gmbh
1,038 Patents

#1 in Ludwigsburg

#47 in Germany

#980 in the World

Ludwigsburg, DE
Ludwigsburg, Germany

Mann+hummel Gmbh

Forward Citations = 4,373

886 inventors:

goldMedal Thomas Jessberger (59 out of 76 patents)

silverMedal Klaus-Dieter Ruhland (59 out of 59 patents)

bronzeMedal Michael Kaufmann (49 out of 49 patents)

4.  Pascal Neef (47 out of 47 patents)

5.  Christian Thalmann (41 out of 43 patents)

Please report any incorrect information to [email protected]
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