Rototest International Ab

Calculating rank

USPTO Granted Patents = 8

EPO Patents = 11

Trademarks = 2

Forward Citations = 20

Loading Chart...

3 inventors (with patents filed for the assignee):

Christian Engström (8 out of 10 patents)

Nils G Engström (6 out of 8 patents)

Jonny Färnlund (6 out of 8 patents)

4. Christian ENGSTRÖM (0 patent)

8 patents: Sort by Forward Citations

1. 11506551 - Method and apparatus for dynamometer testing of a motor vehicle (2022-11-22),

2. 11169054 - Method and system for use in dynamometer testing of a motor vehicle (2021-11-09),

3. 10739234 - Method and system for use in dynamometer testing of a motor vehicle (2020-08-11),

4. 10444119 - Method and system for use in dynamometer testing of a motor vehicle (2019-10-15),

5. 9893673 - Method and system for use in dynamometer testing of a motor vehicle (2018-02-13),

6. 9863850 - Method and system for measuring the mass flow by means of dilution of an exhaust gas from internal combustion (2018-01-09),

7. 9360395 - Method and device for dynamometer testing of a motor vehicle (2016-06-07),

8. 8689618 - Method and device for dynamometer testing of a motor vehicle (2014-04-08),

Company Overview

Rototest International AB is a leading provider of advanced engine testing solutions for the automotive industry. With over 30 years of experience, the company specializes in dynamometer technology, offering state-of-the-art products for engine development and research. Their innovative testing systems are known for their accuracy, reliability, and efficiency, helping customers optimize performance, reduce emissions, and improve fuel economy.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

8 Patents

#1 in Rönninge

#720 in Sweden

Rönninge, Sweden

Rototest International Ab

Forward Citations = 20

3 inventors:

Christian Engström (8 out of 10 patents)

Nils G Engström (6 out of 8 patents)

Jonny Färnlund (6 out of 8 patents)

4. Christian ENGSTRÖM (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rototest International Ab. Retrieved from https://idiyas.com/company/rototest-international-ab

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]

11 patents (EPO):

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]