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Winterthur, Switzerland

Sulzer Brothers Limited

USPTO Granted Patents = 790

CIPO Patents = 3

Trademarks = 4

Forward Citations = 14,858

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521 inventors (with patents filed for the assignee):

Otto Frey (51 out of 56 patents)

Rudolf Koch (42 out of 48 patents)

Erwin Pfarrwaller (25 out of 25 patents)

4. Anton Steiger (24 out of 24 patents)

5. Otto Hintsch (20 out of 21 patents)

6. Charles Mandrin (18 out of 20 patents)

7. Robert R Bucher (14 out of 25 patents)

8. Peter Riesen (12 out of 12 patents)

9. Ernst Bosshard (12 out of 12 patents)

10. Heinz Baumann (11 out of 16 patents)

11. Paul Lincke (10 out of 14 patents)

12. Roland Willi (9 out of 30 patents)

13. John Dalton Griffith (9 out of 29 patents)

14. Hans Demuth (9 out of 9 patents)

15. Felix Alfred Streiff (8 out of 18 patents)

Core Competencies:

Static Laminar Mixing

Catalyzed Reactions

Hollow Needle Manufacturing

Biological Sewage Treatment

Heterogeneous Reactions

Intervertebral Disk Prosthesis

Electric Motor Machines

Fuel Cell Battery

Blood Vessel Puncturing

Directional Solidification

Yarn Handling Equipment

Electrostatic Weft Detection

790 patents: Sort by Forward Citations

1. 6428200 - Static laminar mixing method (2002-08-06),

2. 6419386 - Static laminar mixing device (2002-07-16),

3. 5550298 - Device for carrying out catalyzed reactions (1996-08-27),

4. 5515871 - Hollow needle for medical use and a laser method for manufacturing (1996-05-14),

5. 5473082 - Device for carrying out catalyzed reactions (1995-12-05),

6. 5456533 - Static mixing element having deflectors and a mixing device (1995-10-10),

7. 5422020 - Solid-bed reactor for biological sewage treatment (1995-06-06),

8. 5417938 - Device for carrying out catalyzed reactions (1995-05-23),

9. 5392817 - Apparatus for altering the loop length of terry cloth (1995-02-28),

10. 5380088 - Mixing device for small fluid quantities (1995-01-10),

11. 5350566 - Reactor for heterogeneous reactions with a catalyst member (1994-09-27),

12. 5338519 - Process and apparatus for separating substances by crystallization (1994-08-16),

13. 5330535 - Screw-nut for screwing implants together (1994-07-19),

14. 5320644 - Intervertebral disk prosthesis (1994-06-14),

15. 5306993 - System of driving by electric motor machines which work in a periodic (1994-04-26),

Sulzer is a global leader in fluid engineering, specializing in pumping, agitation, mixing, separation, and application technologies. The company's expertise and solutions are utilized in various industries, including oil and gas, water, chemicals, and power. With a rich history dating back to 1834, Sulzer has a strong commitment to innovation, sustainability, and customer satisfaction.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

790 Patents

#2 in Winterthur

#19 in Switzerland

#1,231 in the World

Winterthur, Switzerland

Sulzer Brothers Limited

Forward Citations = 14,858

521 inventors:

Otto Frey (51 out of 56 patents)

Rudolf Koch (42 out of 48 patents)

Erwin Pfarrwaller (25 out of 25 patents)

4. Anton Steiger (24 out of 24 patents)

5. Otto Hintsch (20 out of 21 patents)

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