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Lenzkirch, Germany

Testo Ag

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USPTO Granted Patents = 51

% Expired Patents = 47.1

EPO Patents = 19

Trademarks = 3

Forward Citations = 502

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66 inventors (with patents filed for the assignee):

Andreas Derr (14 out of 17 patents)

Martin Stratmann (11 out of 11 patents)

Patrick Zahn (10 out of 11 patents)

4. Jan-Friso Evers-Senne (5 out of 5 patents)

5. Martin Rombach (5 out of 7 patents)

6. Matthias Schmieder (5 out of 5 patents)

7. Andreas Messerschmid (4 out of 4 patents)

8. Mike Muhl (4 out of 5 patents)

9. Juergen Hall (4 out of 4 patents)

10. Markus Langenbacher (4 out of 4 patents)

11. Knut Hoyer (3 out of 7 patents)

12. Simon Brugger (2 out of 6 patents)

13. Ralf Stich (2 out of 3 patents)

14. Dirk Gopfert (2 out of 2 patents)

15. Hellen Altendorf (2 out of 2 patents)

Core Competencies:

Temperature Measurement

3D Imaging

Gas Sensing

Thermal Imaging

Flow Measurement

Humidity Sensor

Moisture Content

Aerosol Characterization

Deep-Frying Monitoring

Radiometer

Refractometer

Measurement Device

51 patents: Sort by Forward Citations

1. 10557872 - Measuring arrangement and method for contactless electric current measurement (2020-02-11),

2. 10176628 - Method for creating a 3D representation and corresponding image recording apparatus (2019-01-08),

3. 10157474 - 3D recording device, method for producing a 3D image, and method for setting up a 3D recording device (2018-12-18),

4. 10156591 - Current meter (2018-12-18),

5. 9945829 - Deep-frying device, portable deep-frying oil measuring device, deep-frying device set and method for monitoring a deep-frying device (2018-04-17),

6. 9857232 - Device for non-contact temperature measurement and temperature measurement method (2018-01-02),

7. 9767855 - Method for creating a 3D model of an object and corresponding model calculation device and model calculation device (2017-09-19),

8. D787959 - Measuring instrument (2017-05-30),

9. 9667890 - Method for visualizing spatially-resolved measurement results and corresponding measuring arrangement (2017-05-30),

10. 9658115 - Temperature measuring device, temperature measuring device set and method for configuring a temperature measuring device that can be operated with a thermocouple (2017-05-23),

11. 9534991 - Handheld sampling-removal head, analysis arrangement and method for characterizing an aerosol (2017-01-03),

12. 9518911 - Impactor and method for characterizing a carrier gas enriched with suspended particles (2016-12-13),

13. 9453746 - Volumetric-flow measuring apparatus having a foldable flow straightener (2016-09-27),

14. 9386238 - Method for preparing images in non-visible spectral ranges, and corresponding camera and measuring arrangement (2016-07-05),

15. 9383262 - Imaging inspection device (2016-07-05),

Company Overview

Testo AG, based in Lenzkirch, Germany, specializes in advanced measurement technology, focusing on precise temperature measurement, gas sensing, and thermal imaging. The company develops innovative solutions for various applications, including flow measurement and humidity sensing, catering to industries that require accurate environmental monitoring and control. Testo AG's expertise extends to 3D imaging and aerosol characterization, positioning it as a leader in providing reliable measurement instruments for professionals worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

51 Patents

#1 in Lenzkirch

#1,038 in Germany

#13,798 in the World

Lenzkirch, Germany

Testo Ag

Forward Citations = 502

66 inventors:

Andreas Derr (14 out of 17 patents)

Martin Stratmann (11 out of 11 patents)

Patrick Zahn (10 out of 11 patents)

4. Jan-Friso Evers-Senne (5 out of 5 patents)

5. Martin Rombach (5 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Testo Ag. Retrieved from https://idiyas.com/company/testo-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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