For the Inventor, By the Inventor

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Madison, WI, United States of America

Weir Slurry Group, Inc.

USPTO Granted Patents = 27

CIPO Patents = 4

EPO Patents = 3

Trademarks = 9

Forward Citations = 105

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27 inventors (with patents filed for the assignee):

Randy J Kosmicki (12 out of 13 patents)

Ronald J Bourgeois (5 out of 6 patents)

Francisco A Gozalo (4 out of 4 patents)

4. Sanford W Clark (4 out of 4 patents)

5. Tham Meng (4 out of 4 patents)

6. Michael L Viken (4 out of 4 patents)

7. Timothy Lane (3 out of 3 patents)

8. Aleksander S Roudnev (3 out of 4 patents)

9. Allen David Russell (2 out of 2 patents)

10. Craig Ian Walker (1 out of 6 patents)

11. Aaron Wirth (1 out of 1 patent)

12. Matthew Richard Frye (1 out of 1 patent)

13. Richard J Fecho (1 out of 1 patent)

14. Ricardo Abarca Melo (1 out of 13 patents)

15. David Timm (1 out of 1 patent)

27 patents: Sort by Forward Citations

1. 12152599 - Composite metal centrifugal slurry pump impeller (2024-11-26),

2. 12123429 - Alignment portions on main liner for a pump (2024-10-22),

3. 12117018 - Drive side liner for a centrifugal pump (2024-10-15),

4. 11959487 - Centrifugal slurry pump impeller (2024-04-16),

5. 11466143 - Wear-resistant rubber compositions, systems, and methods (2022-10-11),

6. D958841 - Main liner for a pump (2022-07-26),

7. D958195 - Main liner for a pump (2022-07-19),

8. 11236763 - Inverted annular side gap arrangement for a centrifugal pump (2022-02-01),

9. 10913839 - Wear-resistant rubber compositions, systems, and methods (2021-02-09),

10. 10895265 - Sealing arrangement for adjustable elements of a pump (2021-01-19),

11. 10647835 - Wear-resistant rubber compositions, systems, and methods (2020-05-12),

12. 10590791 - Shaft seal assembly with contaminant detection system (2020-03-17),

13. 10436331 - Gate valve (2019-10-08),

14. 10385647 - Swellable rubber compositions (2019-08-20),

15. 10179873 - Water swellable rubber composition suitable for use with oil field equipment (2019-01-15),

Weir Slurry Group, Inc. is a leading global provider of innovative slurry handling equipment and associated aftermarket support. With a rich history spanning over 150 years, we have established a reputation for delivering high-quality products and exceptional customer service. Our comprehensive range of slurry pumps, hydrocyclones, valves, and wear-resistant linings are utilized in various industries such as mining, mineral processing, and power generation. We are committed to helping our customers achieve optimal performance, efficiency, and profitability in their operations.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

27 Patents

#38 in Madison, WI

#289 in Wisconsin

#11,991 in US

#23,271 in the World

Madison, WI, United States of America

Weir Slurry Group, Inc.

Forward Citations = 105

27 inventors:

Randy J Kosmicki (12 out of 13 patents)

Ronald J Bourgeois (5 out of 6 patents)

Francisco A Gozalo (4 out of 4 patents)

4. Sanford W Clark (4 out of 4 patents)

5. Tham Meng (4 out of 4 patents)

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