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Stal Refrigeration Ab

USPTO Granted Patents = 27

Forward Citations = 248

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16 inventors (with patents filed for the assignee):

Rune V Glanvall (14 out of 14 patents)

Paul Lindstrom (3 out of 3 patents)

Anders Lundberg (3 out of 3 patents)

4. Knut A Lundberg (2 out of 2 patents)

5. Bertil Lundvik (1 out of 1 patent)

6. Nils-Arne Johansson (1 out of 1 patent)

7. Johan A Brandin (1 out of 1 patent)

8. Hans Kalen (1 out of 1 patent)

9. Kurt Pettersson (1 out of 1 patent)

10. Tore Brandin (1 out of 1 patent)

11. Rolf I Axelsson (1 out of 1 patent)

12. Ivar Brandin (1 out of 1 patent)

13. Ludwig Albert (1 out of 1 patent)

14. Kjell Ericson (1 out of 1 patent)

15. Lars Andersson (1 out of 1 patent)

Core Competencies:

Rotary Compressor

Control System

Oil Separator

Ice Slurry

Variable Volume Ratio

Heat Pump

Thrust Bearing

Liquid Injection

Refrigeration System

Vane Type Compressor

Screw Compressor

Fluid Communication

27 patents: Sort by Forward Citations

1. 5108269 - Method of controlling a rotary compressor (1992-04-28),

2. 5044909 - Valve device for control of the inner volume relation in a screw type (1991-09-03),

3. 4932844 - Control section for a control system for controlling the internal volume (1990-06-12),

4. 4877380 - Control system for controlling the internal volume in a rotary compressor (1989-10-31),

5. 4845954 - Method and device for the manufacture of an ice slurry (1989-07-11),

6. 4746277 - Rotary compressor with pressure pulse suppression (1988-05-24),

7. 4741177 - Oil separator in a coolant system (1988-05-03),

8. 4737082 - Lift valve for rotary screw compressors (1988-04-12),

9. 4720250 - Regulator for cooling or heat pump systems (1988-01-19),

10. 4684330 - Drive for rotary compressor (1987-08-04),

11. 4618272 - Device for fixing a thrust bearing (1986-10-21),

12. 4565508 - Device for controlling the volumetric capacity of a screw compressor (1986-01-21),

13. 4488858 - Compressor with radial inlet to screw-formed rotor (1984-12-18),

14. 4474019 - Method of recirculating oil in refrigerating systems (1984-10-02),

15. 4362472 - Rotary compressor with variable built-in volume ratio (1982-12-07),

Company Overview

Stal Refrigeration Ab is a Swedish company specializing in the development and manufacturing of advanced refrigeration systems. The organization focuses on providing innovative solutions for various sectors, including food preservation, industrial cooling, and climate control. With a commitment to sustainability and energy efficiency, Stal Refrigeration Ab leverages cutting-edge technology to enhance performance and reduce environmental impact. The company's expertise positions it as a key player in the refrigeration industry, serving both local and international markets.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

27 Patents

#11 in

#19 in Sweden

#24,012 in the World

Stal Refrigeration Ab

Forward Citations = 248

16 inventors:

Rune V Glanvall (14 out of 14 patents)

Paul Lindstrom (3 out of 3 patents)

Anders Lundberg (3 out of 3 patents)

4. Knut A Lundberg (2 out of 2 patents)

5. Bertil Lundvik (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stal Refrigeration Ab. Retrieved from https://idiyas.com/company/stal-refrigeration-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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