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Eskilstuna, Sweden

Forenade Fabriksverken

USPTO Granted Patents = 45

Trademarks = 1

Forward Citations = 428

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64 inventors (with patents filed for the assignee):

Gustav S Karlstedt (4 out of 4 patents)

Sven William Bjelvert (3 out of 3 patents)

Karl Olof Gronvall (3 out of 3 patents)

4. Lennart J Johansson (3 out of 3 patents)

5. Bjorn W Lindqvist (3 out of 3 patents)

6. Per Henrik Nystrom (3 out of 3 patents)

7. Claes Gustav Tisell (3 out of 3 patents)

8. Gustav Y Thorstensson (3 out of 3 patents)

9. Lennart Nils Johansson (2 out of 4 patents)

10. Eric Vilhelm Wallberg (2 out of 2 patents)

11. Claes G Arnell (2 out of 2 patents)

12. Claes-Gustav E Tisell (2 out of 2 patents)

13. Karl E Lundell (2 out of 2 patents)

14. Sven H Horner (2 out of 2 patents)

15. Rune V Akhagen (2 out of 2 patents)

Core Competencies:

Pressure Damper

Recoilless Weapons

Mortar Carriage

Cold Forging

Heat Exchangers

Projectile

Hot Gas Engine

Vehicle Safety

Magnetic Land Mine

Firing Mechanism

Fuel-Air Regulation

Electronic Sight

45 patents: Sort by Forward Citations

1. 4554860 - Pressure damper for recoilless weapons (1985-11-26),

2. 4548122 - Mortar carriage (1985-10-22),

3. 4543885 - Increment charge for a finned projectile (1985-10-01),

4. 4540041 - Arrangement for tubular heat exchangers located in a lake (1985-09-10),

5. 4515081 - Arrangement in a fuse for projectiles with explosive charge for changing (1985-05-07),

6. 4506603 - Arrangement for a land mine (1985-03-26),

7. 4498394 - Arrangement for a terminally guided projectile provided with a target (1985-02-12),

8. 4466676 - Arrangement for a cabinet having a door which can be swung outwards from (1984-08-21),

9. 4429561 - Mandrel for cold forging internally profiled tubes or cylinders (1984-02-07),

10. 4428222 - Cold forging mandrel with threads (1984-01-31),

11. 4428220 - Method and tool for the cold forging of internally profiled tubes (1984-01-31),

12. 4407351 - Method for heat absorption from a sea bottom or the like (1983-10-04),

13. 4322826 - Method and system for distinguishing between displacing targets and a (1982-03-30),

14. 4316317 - Method and apparatus for adjusting roller rings on a shaft (1982-02-23),

15. 4296767 - Method and apparatus for cleaning a continuous web of material (1981-10-27),

Company Overview

Forenade Fabriksverken, based in Eskilstuna, Sweden, specializes in advanced defense and engineering solutions. The company focuses on the development and manufacturing of recoilless weapons, projectiles, and vehicle safety systems, contributing to military and civilian applications. Their expertise extends to heat exchangers, cold forging, combustion engines, fluid couplings, and electronic sights, positioning them as a key player in the technology landscape. With a commitment to innovation, Forenade Fabriksverken continues to enhance performance and safety in various sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

45 Patents

#2 in Eskilstuna

#153 in Sweden

#15,419 in the World

Eskilstuna, Sweden

Forenade Fabriksverken

Forward Citations = 428

64 inventors:

Gustav S Karlstedt (4 out of 4 patents)

Sven William Bjelvert (3 out of 3 patents)

Karl Olof Gronvall (3 out of 3 patents)

4. Lennart J Johansson (3 out of 3 patents)

5. Bjorn W Lindqvist (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Forenade Fabriksverken. Retrieved from https://idiyas.com/company/forenade-fabriksverken

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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