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Zurich, Switzerland

Von Roll Umwelttechnik Ag

USPTO Granted Patents = 27

% Expired Patents = 25.9

Trademarks = 1

Forward Citations = 118

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39 inventors (with patents filed for the assignee):

Hans Ruegg (7 out of 18 patents)

Felix Koller (3 out of 4 patents)

Josef Mercx (3 out of 4 patents)

4. Ruedi Frey (3 out of 4 patents)

5. Rudolf Frey (3 out of 4 patents)

6. Norbert Kiethe (3 out of 3 patents)

7. Werner Brennwald (2 out of 9 patents)

8. Anton Mayer (2 out of 3 patents)

9. Erich Vogler (2 out of 2 patents)

10. Klaus Zoss (2 out of 2 patents)

11. Stefan Forsberg (2 out of 2 patents)

12. Alfred Edlinger (2 out of 33 patents)

13. Peter C Straub (2 out of 2 patents)

14. Theo Rey (2 out of 4 patents)

15. Rolf Hauser (2 out of 2 patents)

Core Competencies:

Waste Incineration

Exhaust Gas Purification

Thermal Treatment

Nitrogen Oxides

Refuse Incineration

Grate Element

Solid Residues

Catalyst Regeneration

Combustion Process

Energy Production

Fire Monitoring

Gaseous Constituents

27 patents: Sort by Forward Citations

1. 8156819 - Method for checking a knocking device (2012-04-17),

2. 7857889 - Method for purifying exhaust gases from a waste incineration plant (2010-12-28),

3. 7845291 - Control method for waste incineration plants with auxiliary burner operation (2010-12-07),

4. 7595033 - Regeneration of nt-scr catalysts (2009-09-29),

5. 7424856 - Grate element for a grate of a waste combustion installation (2008-09-16),

6. 7343866 - Waste-throughput limiting control (2008-03-18),

7. 6938561 - Device for producing a rotating flow (2005-09-06),

8. 6752093 - Method for operating a refuse incineration plant (2004-06-22),

9. 6655955 - Coolable arched roof (2003-12-02),

10. 6513445 - Plant and grate block for the thermal treatment of waste materials (2003-02-04),

11. 6425336 - Grate trough as part of a grate for a plant for the thermal treatment of waste (2002-07-30),

12. 6382112 - Chute of a feed system for a refuse incineration plant having a cutting apparatus (2002-05-07),

13. 6290752 - Device and process for adsorption or chemisorption of gaseous constituents from a gas flow (2001-09-18),

14. 6237808 - Method and device for emptying a drum filled with solids (2001-05-29),

15. 6117405 - Process for removing nitrogen oxides from flue gases (2000-09-12),

Company Overview

Von Roll Umwelttechnik AG, based in Zurich, specializes in innovative solutions for environmental technology. The company focuses on waste management, recycling, and resource recovery, aiming to enhance sustainability and efficiency in these sectors. With a commitment to developing advanced technologies, Von Roll plays a significant role in promoting circular economy practices, contributing to cleaner and more sustainable environments. Its expertise extends across various applications, addressing both industrial and municipal needs in the environmental landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

27 Patents

#34 in Zurich

#489 in Switzerland

#24,034 in the World

Zurich, Switzerland

Von Roll Umwelttechnik Ag

Forward Citations = 118

39 inventors:

Hans Ruegg (7 out of 18 patents)

Felix Koller (3 out of 4 patents)

Josef Mercx (3 out of 4 patents)

4. Ruedi Frey (3 out of 4 patents)

5. Rudolf Frey (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Von Roll Umwelttechnik Ag. Retrieved from https://idiyas.com/company/von-roll-umwelttechnik-ag

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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