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Ravensburg, Germany

Escher Wyss Limited

USPTO Granted Patents = 198

Trademarks = 2

Forward Citations = 2,078

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135 inventors (with patents filed for the assignee):

Rolf Lehmann (28 out of 45 patents)

Mario Biondetti (22 out of 26 patents)

Alfred Christ (19 out of 27 patents)

4. Wolf-Gunter Stotz (16 out of 30 patents)

5. Alfred Bubik (15 out of 40 patents)

6. Helmut Miller (10 out of 11 patents)

7. Ignazio Marchioro (10 out of 10 patents)

8. Herbert Holik (8 out of 34 patents)

9. Rudiger Kurtz (8 out of 27 patents)

10. Albrecht Kahmann (8 out of 9 patents)

11. Siegfried Reutter (7 out of 9 patents)

12. Hans-Joachim Schultz (6 out of 6 patents)

13. Hans Schnell (5 out of 14 patents)

14. Christoph Link (5 out of 19 patents)

15. Wolfgang Wuhrer (5 out of 9 patents)

Core Competencies:

Papermaking Machine

Dewatering Apparatus

Controlled Deflection Roll

Fiber Stock

Hydro-electric Turbo-machine

Flotation Apparatus

Centrifugal Separator

Roll Stand

Multi-ply Headbox

Grinding Apparatus

Processing Waste Paper

Marine Vessel

198 patents: Sort by Forward Citations

1. 4686005 - Method of washing stock suspensions by removing undesired material (1987-08-11),

2. 4650125 - Method for sorting fiber stock, especially for manufacturing paper, and (1987-03-17),

3. 4600594 - Process for the conditioning of crushed oil-containing seeds prior to (1986-07-15),

4. 4574496 - Ring-gap nozzle and its application in a fluidized bed dryer (1986-03-11),

5. 4570314 - Press roll (1986-02-18),

6. 4563940 - Oil infeed device for an adjustable pitch propeller (1986-01-14),

7. 4560474 - Flotation apparatus for floating fiber suspensions extracted from waste (1985-12-24),

8. 4557826 - Method of and apparatus for separating tacky contaminants from a stock (1985-12-10),

9. 4556573 - Method for treating soybeans (1985-12-03),

10. 4552462 - Stirrer apparatus for paper stock (1985-11-12),

11. 4543162 - Multi-ply headbox having adjustable outlet slices (1985-09-24),

12. 4540341 - Adjustable propeller for marine vessel drive (1985-09-10),

13. 4538765 - Method for defiberizing waste paper in a thick stock range (1985-09-03),

14. 4525916 - Method of coupling coaxial shafts (1985-07-02),

15. 4509237 - Arrangement containing a controlled deflection roll and related regulator (1985-04-09),

Escher Wyss Limited, based in Ravensburg, Germany, specializes in advanced papermaking technology. The company focuses on the development and manufacturing of innovative equipment and systems that enhance the efficiency and quality of the papermaking process. Key areas of expertise include papermaking machines, dewatering apparatus, and controlled deflection rolls, among others. Escher Wyss is committed to delivering solutions that optimize fiber stock processing and improve overall production capabilities in the paper industry.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Escher Wyss Limited

198 Patents

#1 in Ravensburg

#299 in Germany

#4,258 in the World

Ravensburg, Germany

Escher Wyss Limited

Forward Citations = 2,078

135 inventors:

Rolf Lehmann (28 out of 45 patents)

Mario Biondetti (22 out of 26 patents)

Alfred Christ (19 out of 27 patents)

4. Wolf-Gunter Stotz (16 out of 30 patents)

5. Alfred Bubik (15 out of 40 patents)

Please report any incorrect information to [email protected]

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