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For the Inventor, By the Inventor

Mason, OH, United States of America

Kadant Black Clawson Inc.


USPTO Granted Patents = 20

% Expired Patents = 20.0



Trademarks = 5

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)


20 patents:

1. 12571161 - Deflaking element for pulper (2026-03-10),
2. 12442135 - Screen cylinder with improved slot width protection and method of removing solid contaminants from a solid suspension (2025-10-14),
3. 12440870 - Rotor with forward-swept struts for pressure screen cylinders (2025-10-14),
4. 12421661 - Slurry cleaner systems with cleaner dilution devices and methods of cleaning slurries therewith (2025-09-23),
5. 12331459 - Ragger systems and methods for removing solid debris from pulping processes (2025-06-17),
6. 12246275 - Disc filters and methods of operating disc filters (2025-03-11),
7. 12070776 - Rotor with forward-swept struts for pressure screen cylinders (2024-08-27),
8. 11883766 - Disc filters and methods of operating disc filters (2024-01-30),
9. 11648493 - Clarifier with independent sump scraper drive (2023-05-16),
10. 11148074 - Clarifier with independent sump scraper drive (2021-10-19),
11. 9238188 - Disc filter (2016-01-19),
12. 8172985 - Extraction bedplate with laser or water jet cut apertures (2012-05-08),
13. 7794609 - Centrifugal flow distribution clarifier feedwell and method of feeding influent to a clarifier thereby (2010-09-14),
14. 7694902 - Self-aligning and actively compensating refiner stator plate system (2010-04-13),
15. 7628890 - Extraction bedplate with laser or water jet cut apertures (2009-12-08),
Company Overview
Kadant Black Clawson Inc., based in Mason, Ohio, specializes in the development and manufacturing of advanced technologies for the pulp and paper industry. The company focuses on providing innovative solutions that enhance the efficiency and sustainability of paper production processes. With a strong emphasis on research and development, Kadant Black Clawson is dedicated to delivering high-performance equipment and systems that support the evolving needs of its global clientele in the paper and packaging sectors.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

20 Patents

#10 in Mason, OH

#714 in Ohio

#16,395 in US

#31,264 in the World

Mason, OH (US)
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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kadant Black Clawson Inc.. Retrieved from https://idiyas.com/company/kadant-black-clawson

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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