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For the Inventor, By the Inventor

Vikmanshyttan, Sweden

Ctek Sweden Ab


USPTO Granted Patents = 17


Trademarks = 9

Forward Citations = 399

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10 inventors (with patents filed for the assignee):

goldMedal Tor Magnusson (5 out of 5 patents)

silverMedal Joakim Norin (4 out of 13 patents)

bronzeMedal Lars Olov Ahlgren (4 out of 4 patents)

4.  Helge Andersson (3 out of 3 patents)

5.  Börje Maleus (3 out of 4 patents)

6.  Per Eriksson (1 out of 2 patents)

7.  Linus Eriksson (1 out of 1 patent)

8.  Hans-Olof Frojd (1 out of 2 patents)

9.  Bengt Wahlqvist (1 out of 2 patents)

10.  Daniel Sundqvist (1 out of 1 patent)

11.  Peter Nordlöf (2 patents)

12.  Hans-Olof FRÖJD (0 patent)


17 patents:

1. 12377747 - Method to detect vehicle battery type before charge (2025-08-05),
2. 11691535 - Method for improving life span of a battery (2023-07-04),
3. 11385291 - Battery monitoring unit and method thereof (2022-07-12),
4. 10830824 - System and a method for determining state-of-charge of a battery (2020-11-10),
5. 10328807 - Method for operating a battery charger, and a battery charger (2019-06-25),
6. 8901884 - Combined battery charger and battery equalizer (2014-12-02),
7. D682779 - Apparatus for recharging batteries (2013-05-21),
8. 8368345 - Battery charging system for controlling the supply of charging current depending on battery temperature, a battery operated system and a method for state controlled charging (2013-02-05),
9. 8350535 - Battery charging and electrical energy delivery system for delivering electrical energy to consumers and charging current to a battery and a battery operated system (2013-01-08),
10. RE42303 - Female electrical connector component (2011-04-25),
11. RE42230 - Male electrical connector component (2011-03-21),
12. D596126 - Female electrical connector component (2009-07-14),
13. D596125 - Male electrical connector component (2009-07-14),
14. D581356 - Battery charger (2008-11-25),
15. D580853 - Battery charger (2008-11-18),
Company Overview
Ctek Sweden Ab is a prominent developer and manufacturer specializing in advanced battery management solutions. The company focuses on innovative charging technologies that enhance battery performance and longevity, catering to various sectors including automotive, marine, and industrial applications. With a commitment to sustainability and efficiency, Ctek's products are designed to meet the evolving needs of consumers and businesses alike, ensuring reliable power management across diverse environments.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

17 Patents

#1 in Vikmanshyttan

#387 in Sweden

#35,948 in the World

Vikmanshyttan, SE
Vikmanshyttan, Sweden

Ctek Sweden Ab

Forward Citations = 399

10 inventors:

goldMedal Tor Magnusson (5 out of 5 patents)

silverMedal Joakim Norin (4 out of 13 patents)

bronzeMedal Lars Olov Ahlgren (4 out of 4 patents)

4.  Helge Andersson (3 out of 3 patents)

5.  Börje Maleus (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ctek Sweden Ab. Retrieved from https://idiyas.com/company/ctek-sweden-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]
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