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For the Inventor, By the Inventor

Mason, OH, United States of America

Kadant Black Clawson Inc.


USPTO Granted Patents = 19



Trademarks = 8

Forward Citations = 108

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25 inventors (with patents filed for the assignee):

goldMedal Christopher L Demler (7 out of 8 patents)

silverMedal John J Egan, Iii (7 out of 11 patents)

bronzeMedal Paul J Powers (2 out of 2 patents)

4.  Daniel Parenteau (2 out of 4 patents)

5.  Hugues Dionne (2 out of 3 patents)

6.  David E Chupka (2 out of 30 patents)

7.  Cameron Coale Demler (2 out of 2 patents)

8.  Clinton R Parks (1 out of 2 patents)

9.  Kent Strid (1 out of 1 patent)

10.  Rolf Oswaldson (1 out of 1 patent)

11.  Michael A Sieron (1 out of 3 patents)

12.  Peter Seifert (1 out of 29 patents)

13.  Steven T Haywood (1 out of 1 patent)

14.  Kirk A King (1 out of 1 patent)

15.  Donald K Greier (1 out of 4 patents)


19 patents:

1. 12442135 - Screen cylinder with improved slot width protection and method of removing solid contaminants from a solid suspension (2025-10-14),
2. 12440870 - Rotor with forward-swept struts for pressure screen cylinders (2025-10-14),
3. 12421661 - Slurry cleaner systems with cleaner dilution devices and methods of cleaning slurries therewith (2025-09-23),
4. 12331459 - Ragger systems and methods for removing solid debris from pulping processes (2025-06-17),
5. 12246275 - Disc filters and methods of operating disc filters (2025-03-11),
6. 12070776 - Rotor with forward-swept struts for pressure screen cylinders (2024-08-27),
7. 11883766 - Disc filters and methods of operating disc filters (2024-01-30),
8. 11648493 - Clarifier with independent sump scraper drive (2023-05-16),
9. 11148074 - Clarifier with independent sump scraper drive (2021-10-19),
10. 9238188 - Disc filter (2016-01-19),
11. 8172985 - Extraction bedplate with laser or water jet cut apertures (2012-05-08),
12. 7794609 - Centrifugal flow distribution clarifier feedwell and method of feeding influent to a clarifier thereby (2010-09-14),
13. 7694902 - Self-aligning and actively compensating refiner stator plate system (2010-04-13),
14. 7628890 - Extraction bedplate with laser or water jet cut apertures (2009-12-08),
15. 6989074 - Paper pulp refiner control system and method using active hydrostatic bearings (2006-01-24),
Kadant Black Clawson Inc. specializes in the design, manufacture, and supply of equipment and systems for the pulp and paper industry. With a strong reputation for innovation, their products include stock preparation systems, refining equipment, screening equipment, and doctoring solutions. They also offer engineering services, providing customized solutions to meet the unique needs of each customer. Visit their website to learn more about their cutting-edge technology and comprehensive solutions for the pulp and paper industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

19 Patents

#14 in Mason, OH

#700 in Ohio

#16,592 in US

#31,670 in the World

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Mason, OH, United States of America

Kadant Black Clawson Inc.

Forward Citations = 108

25 inventors:

goldMedal Christopher L Demler (7 out of 8 patents)

silverMedal John J Egan, Iii (7 out of 11 patents)

bronzeMedal Paul J Powers (2 out of 2 patents)

4.  Daniel Parenteau (2 out of 4 patents)

5.  Hugues Dionne (2 out of 3 patents)

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