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For the Inventor, By the Inventor

Graz, Austria

Andritz Ag


USPTO Granted Patents = 99

% Expired Patents = 37.4



Trademarks = 10

Forward Citations = 188

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131 inventors (with patents filed for the assignee):

goldMedal Helmuth Gabl (19 out of 20 patents)

silverMedal Wilhelm Mausser (11 out of 22 patents)

bronzeMedal Gerald Schadler (9 out of 9 patents)

4.  Klaus Gissing (6 out of 6 patents)

5.  Harald Weigant (6 out of 9 patents)

6.  Andreas Anzel (5 out of 6 patents)

7.  Alexander Gscheider (5 out of 8 patents)

8.  Axel Pichler (5 out of 5 patents)

9.  Bernhard Scherzinger (5 out of 5 patents)

10.  Franz Petschauer (4 out of 15 patents)

11.  Walter Writzl (4 out of 8 patents)

12.  Erwin Hertl (3 out of 3 patents)

13.  Michael Kramer (3 out of 3 patents)

14.  Rudolf Stadlauer (3 out of 4 patents)

15.  Peter Scheucher (3 out of 19 patents)


Core Competencies:
Flocculant Regulation
Filtrate Measurement
Screw Press
Fibrous Web Production
Yankee Dryer
Dewatering Techniques
Hydrocyclone
Energy Savings
Metal Recovery
Suspension Aeration
Paper Web Stabilization
Waste Heat Utilization

99 patents:

1. 12590023 - Method for regulating the addition of a flocculant to a sludge (2026-03-31),
2. 12365159 - Method and device for measuring the filtrate content on a screw press (2025-07-22),
3. 12319022 - Method for producing a screen body, and screen (2025-06-03),
4. 12188177 - Apparatus for grinding a fibrous material suspension (2025-01-07),
5. 12006631 - Device and method for producing a fibrous web (2024-06-11),
6. 11946203 - Device and method for transferring a strip of a web (2024-04-02),
7. 11702796 - Device and method for producing a pulp web (2023-07-18),
8. 11649798 - Reversible pump turbine and guide vane for the reversible pump turbine (2023-05-16),
9. 11535983 - Method for producing a fibrous material (2022-12-27),
10. 11414816 - Method and device for treating a fibrous material web in a long nip pressing unit (2022-08-16),
11. 11414718 - Method for the surface treatment of a steel Yankee (2022-08-16),
12. 11306643 - Plant for absorption of individual components in gases (2022-04-19),
13. 11052626 - Screw press (2021-07-06),
14. 10961612 - Method for controlling the coiling temperature of a metal strip (2021-03-30),
15. 10870947 - Process for isolation of hemicelluloses from biomass pulping process waters or spent liquors (2020-12-22),
Company Overview
Andritz AG, headquartered in Graz, Austria, is a global leader in the pulp and paper processing industry. The company specializes in advanced technologies and equipment for various stages of production, including flocculant regulation, filtrate measurement, and dewatering techniques. Andritz is renowned for its innovative solutions such as screw presses and Yankee dryers, which enhance energy efficiency and optimize fibrous web production. With a strong commitment to sustainability, Andritz continues to drive advancements in the sector, supporting clients worldwide.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Andritz Ag USPTO Patent Assignee Logo
99 Patents

#3 in Graz

#32 in Austria

#7,857 in the World

Graz, AT
Graz, Austria

Andritz Ag

Forward Citations = 188

131 inventors:

goldMedal Helmuth Gabl (19 out of 20 patents)

silverMedal Wilhelm Mausser (11 out of 22 patents)

bronzeMedal Gerald Schadler (9 out of 9 patents)

4.  Klaus Gissing (6 out of 6 patents)

5.  Harald Weigant (6 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Andritz Ag. Retrieved from https://idiyas.com/company/andritz-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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