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Ancaster, Canada

Stackpole International Engineered Products, Ltd.

USPTO Granted Patents = 14

CIPO Patents = 6

EPO Patents = 8

Forward Citations = 18

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16 inventors (with patents filed for the assignee):

Ralph Valkenberg (5 out of 5 patents)

Hans Peter Kutzer (4 out of 5 patents)

Liping Wang (3 out of 7 patents)

4. Richard Muizelaar (3 out of 18 patents)

5. Andrzej Kowalski (2 out of 4 patents)

6. Paul Morton (2 out of 2 patents)

7. Manfred Arnold (2 out of 4 patents)

8. Vladimir Vukas (1 out of 1 patent)

9. Luke Bouwmeester (1 out of 1 patent)

10. Oliver Böwing (1 out of 1 patent)

11. Tuncay Bayo (1 out of 1 patent)

12. Abdalhameed Zubeidat (1 out of 1 patent)

13. Haytham Elgamal (1 out of 1 patent)

14. Matthew Tyler Hughes (1 out of 1 patent)

15. Theresa Kam Lun Chan (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 11796555 - Pump assembly having a controller including a circuit board and 3D rotary sensor for detecting rotation of its pump (2023-10-24),

2. 11493036 - Spool valve used in a variable vane pump (2022-11-08),

3. 11480173 - Pressure relief valve integrated in pivot pin of pump (2022-10-25),

4. 11421685 - Vane pump with improved seal assembly for control chamber (2022-08-23),

5. 11035360 - Gerotor with spindle (2021-06-15),

6. 10871161 - Epitrochoidal vacuum pump (2020-12-22),

7. 10815991 - Dual input pump and system (2020-10-27),

8. 10808697 - Pump assembly having integrated controller and motor with internal active cooling (2020-10-20),

9. 10253772 - Pump with control system including a control system for directing delivery of pressurized lubricant (2019-04-09),

10. 10247187 - Variable displacement vane pump with thermo-compensation (2019-04-02),

11. 10030656 - Variable displacement vane pump with integrated fail safe function (2018-07-24),

12. 9771935 - Variable displacement vane pump with thermo-compensation (2017-09-26),

13. 9534519 - Variable displacement vane pump with integrated fail safe function (2017-01-03),

14. 9109597 - Variable displacement pump with multiple pressure chambers where a circumferential extent of a first portion of a first chamber is greater than a second portion (2015-08-18),

Stackpole International Engineered Products, Ltd. is a global leader in the design and manufacture of highly-engineered fluid power solutions and powder metal components. With over 100 years of experience, Stackpole provides innovative technologies and expertise to industries such as automotive, heavy truck, industrial, and off-highway. Through their comprehensive engineering capabilities and global manufacturing footprint, Stackpole delivers high-performance solutions that meet the most demanding customer requirements.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

14 Patents

#1 in Ancaster

#1,015 in Canada

#40,903 in the World

Ancaster, Canada

Stackpole International Engineered Products, Ltd.

Forward Citations = 18

16 inventors:

Ralph Valkenberg (5 out of 5 patents)

Hans Peter Kutzer (4 out of 5 patents)

Liping Wang (3 out of 7 patents)

4. Richard Muizelaar (3 out of 18 patents)

5. Andrzej Kowalski (2 out of 4 patents)

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