For the Inventor, By the Inventor

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Oakdale, MN, United States of America

Carbon Technology Holdings, LLC

USPTO Granted Patents = 61

CIPO Patents = 1

EPO Patents = 3

Trademarks = 3

Forward Citations = 389

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30 inventors (with patents filed for the assignee):

James A Mennell (44 out of 48 patents)

Daniel J Despen (36 out of 40 patents)

Han Suk Kim (16 out of 42 patents)

4. Brian Buege (12 out of 21 patents)

5. Steve Filips (12 out of 13 patents)

6. Richard Wilson Belcher (11 out of 27 patents)

7. Daren Einar Daugaard (10 out of 16 patents)

8. Dustin Slack (9 out of 9 patents)

9. Ranko Panayotov Bontchev (8 out of 21 patents)

10. Mark Lahman Jarand (8 out of 30 patents)

11. Vern S Traxler (7 out of 19 patents)

12. Juliette MacKay (6 out of 9 patents)

13. Ronald A Sills (6 out of 25 patents)

14. David Reamer (6 out of 7 patents)

15. Rajashekharam Malyala (5 out of 31 patents)

Core Competencies:

High-Carbon Biogenic Reagents

Biochar

Activated Carbon

Biocarbon Blends

Carbon-Negative Products

Biomass Pyrolysis

Microbial Carrier

Water Treatment Systems

Mineral Solubilizing Microorganisms

Biogenic Activated Carbon

Turf Grass Applications

Environmental Impact Reduction

61 patents: Sort by Forward Citations

1. 12516262 - High-carbon biogenic reagents and uses thereof (2026-01-06),

2. 12498943 - Advanced agent instrumentation for opentelemetry implementations (2025-12-16),

3. 12497570 - High-carbon biogenic reagents and uses thereof (2025-12-16),

4. 12441947 - High-carbon biogenic reagents and uses thereof (2025-10-14),

5. 12421176 - Biochar as a microbial carrier (2025-09-23),

6. 12404472 - High-carbon biogenic reagents and uses thereof (2025-09-02),

7. 12404471 - High-carbon biogenic reagents and uses thereof (2025-09-02),

8. 12404455 - Biocarbon blends with optimized fixed carbon content, and methods for making and using the same (2025-09-02),

9. 12398435 - Carbon-negative metallurgical products (2025-08-26),

10. 12351770 - High-carbon biogenic reagents and uses thereof (2025-07-08),

11. 12350648 - Methods and apparatus for producing activated carbon from biomass through carbonized ash intermediates (2025-07-08),

12. 12297399 - Process for producing high-carbon biogenic reagents (2025-05-13),

13. 12297398 - Methods and apparatus for enhancing the energy content of carbonaceous materials from pyrolysis (2025-05-13),

14. 12296316 - Highly mesoporous activated carbon (2025-05-13),

15. 12291760 - Bio-reduction of metal ores integrated with biomass pyrolysis (2025-05-06),

Carbon Technology Holdings, LLC is a leading technology company specializing in the development and production of advanced carbon-based materials. Our core expertise lies in creating innovative solutions for industries such as aerospace, renewable energy, electronics, and automotive. With a team of highly skilled engineers, scientists, and designers, we aim to revolutionize various sectors by delivering cutting-edge carbon-based technologies. Visit our website to learn more about our products, services, and how we can help transform your industry.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

61 Patents

#2 in Oakdale, MN

#161 in Minnesota

#5,749 in US

#11,629 in the World

Oakdale, MN, United States of America

Carbon Technology Holdings, LLC

Forward Citations = 389

30 inventors:

James A Mennell (44 out of 48 patents)

Daniel J Despen (36 out of 40 patents)

Han Suk Kim (16 out of 42 patents)

4. Brian Buege (12 out of 21 patents)

5. Steve Filips (12 out of 13 patents)

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