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Gråsten, Denmark

Danfoss Drives A/s

USPTO Granted Patents = 27

% Expired Patents = 29.6

EPO Patents = 6

Trademarks = 4

Forward Citations = 967

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47 inventors (with patents filed for the assignee):

Lars Hoffmann Berthelsen (8 out of 45 patents)

Robert W Stiles, Jr (6 out of 48 patents)

Henrik Rosendal Andersen (5 out of 10 patents)

4. Gert Kjaer (3 out of 21 patents)

5. Ronald B Robol (3 out of 35 patents)

6. Peter Westermann-Rasmussen (3 out of 16 patents)

7. Florin Lungeanu (3 out of 21 patents)

8. Christopher Ryan Yahnker (3 out of 50 patents)

9. Micheal Pasche (2 out of 17 patents)

10. Einar Kjartan Runarsson (2 out of 17 patents)

11. Daniel J Hruby (2 out of 16 patents)

12. Kevin Murphy (2 out of 37 patents)

13. Alberto Morando (2 out of 5 patents)

14. Melissa Drechsel Kidd (2 out of 9 patents)

15. Li Fei Zheng (2 out of 27 patents)

Core Competencies:

Pumping System

Flow Control

Power Optimization

Safety System

Synchronous Reluctance Motor

Variable Speed Control

Pulse Width Modulation

Frequency Converter

Motor Controller

Fault Detection

Cooling Apparatus

RFI Filter

27 patents: Sort by Forward Citations

1. 10240606 - Pumping system with two way communication (2019-03-26),

2. 9932984 - Pumping system with power optimization (2018-04-03),

3. 9777733 - Flow control (2017-10-03),

4. 9726184 - Safety vacuum release system (2017-08-08),

5. 9712098 - Safety system and method for pump and motor (2017-07-18),

6. 9692340 - Variable torque angle for electric motor (2017-06-27),

7. 9692337 - Method for controlling a synchronous reluctance electric motor (2017-06-27),

8. 9605680 - Control algorithm of variable speed pumping system (2017-03-28),

9. 9556874 - Method of controlling a pump and motor (2017-01-31),

10. 9551344 - Anti-entrapment and anti-dead head function (2017-01-24),

11. 8860344 - Method for implementing bootstrap-supply charging in a motor controller at energized motor and motor controller using such a method (2014-10-14),

12. 8648561 - Method for driving a pulse width modulated controller (2014-02-11),

13. 8552757 - Method for detecting a fault in an induction machine (2013-10-08),

14. 8379353 - Method for detecting earth-fault conditions in a motor controller (2013-02-19),

15. 8363408 - Electronic device and frequency converter of motor (2013-01-29),

Company Overview

Danfoss Drives A/S, headquartered in Gråsten, Denmark, specializes in the development and manufacturing of variable frequency drives and related technologies. The company focuses on enhancing energy efficiency and performance in various applications, including industrial automation, HVAC, and renewable energy systems. Danfoss Drives is committed to innovation in motor control and drive solutions, contributing to sustainable practices across multiple sectors while leveraging advanced engineering and digital technologies.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

27 Patents

#2 in Gråsten

#114 in Denmark

#24,012 in the World

Gråsten, Denmark

Danfoss Drives A/s

Forward Citations = 967

47 inventors:

Lars Hoffmann Berthelsen (8 out of 45 patents)

Robert W Stiles, Jr (6 out of 48 patents)

Henrik Rosendal Andersen (5 out of 10 patents)

4. Gert Kjaer (3 out of 21 patents)

5. Ronald B Robol (3 out of 35 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Danfoss Drives A/s. Retrieved from https://idiyas.com/company/danfoss-drives-a-s

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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