For the Inventor, By the Inventor

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Charlotte, NC, United States of America

Midrex Technologies, Inc.

USPTO Granted Patents = 45

% Expired Patents = 8.9

CIPO Patents = 5

EPO Patents = 18

Trademarks = 1

Forward Citations = 166

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36 inventors (with patents filed for the assignee):

Gary Edward Metius (12 out of 14 patents)

James M McClelland, Jr (10 out of 12 patents)

Haruyasu Michishita (8 out of 9 patents)

4. Gregory Darel Hughes (8 out of 8 patents)

5. David C Meissner (7 out of 34 patents)

6. Todd Michael Astoria (7 out of 7 patents)

7. Stephen Craig Montague (5 out of 9 patents)

8. Mirmohammadyousef Motamedhashemi (4 out of 4 patents)

9. Brian William Voelker (4 out of 9 patents)

10. Travis Wright (3 out of 3 patents)

11. Robert B Cheeley (3 out of 3 patents)

12. Russell Kakaley (3 out of 4 patents)

13. Keith Marshall Bastow-Cox (3 out of 3 patents)

14. Vincent Chevrier (2 out of 2 patents)

15. Glenn E Hoffman (2 out of 16 patents)

Core Competencies:

Direct Reduced Iron

Hydrogen Utilization

Carbon Content Enhancement

Gas Optimization

Coke Oven Gas

Electric Arc Heating

Reforming Process

High Carbon Content Iron

Ferro-Chrome Production

Molten Metal Production

Sequestering Carbon Dioxide

Synthesis Gas

45 patents: Sort by Forward Citations

1. 12497668 - Hot metal production from DRI with electric arc heating (2025-12-16),

2. 12421564 - Iron (DRI) between a DRI source and processing equipment for the DRI (2025-09-23),

3. 12098436 - Seal gas optimization systems and methods for a direct reduction process (2024-09-24),

4. 12084730 - Methods and systems for increasing the carbon content of direct reduced iron in a reduction furnace (2024-09-10),

5. 12000011 - System and method for the production of hot briquetted iron (HBI) containing flux and/or carbonaceous material at a direct reduction plant (2024-06-04),

6. 11965221 - Method and system for heating direct reduced iron (DRI) between a DRI source and processing equipment for the DRI (2024-04-23),

7. 11952638 - Direct reduction process utilizing hydrogen (2024-04-09),

8. 11920204 - Oxygen injection for reformer feed gas for direct reduction process (2024-03-05),

9. 11788159 - Integration of DR plant and electric DRI melting furnace for producing high performance iron (2023-10-17),

10. 11655511 - Seal gas optimization systems and methods for a direct reduction process (2023-05-23),

11. 11499201 - Direct reduction process utilizing hydrogen (2022-11-15),

12. 11021766 - Direct reduction with coal gasification and coke oven gas (2021-06-01),

13. 10988817 - Oxygen injection system for a direct reduction process (2021-04-27),

14. 10907224 - Direct reduction system and process utilizing a process gas direct recycle line (2021-02-02),

15. 10604815 - Direct reduction process and shaft furnace utilizing an extended flow diverter cone (2020-03-31),

Midrex Technologies, Inc., based in Charlotte, NC, specializes in innovative processes for the production of direct reduced iron (DRI), a key material in steelmaking. The company focuses on enhancing carbon content and utilizing hydrogen in its technologies, which include oxygen injection systems and processes for converting coke oven gas. Midrex is also involved in ferro-chrome production and carbon dioxide sequestration, contributing to sustainable practices in the steel industry. Its advancements in gas-to-liquid processes further underscore its commitment to efficiency and environmental responsibility.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Midrex Technologies, Inc.

45 Patents

#37 in Charlotte, NC

#184 in North Carolina

#7,773 in US

#15,419 in the World

Charlotte, NC, United States of America

Midrex Technologies, Inc.

Forward Citations = 166

36 inventors:

Gary Edward Metius (12 out of 14 patents)

James M McClelland, Jr (10 out of 12 patents)

Haruyasu Michishita (8 out of 9 patents)

4. Gregory Darel Hughes (8 out of 8 patents)

5. David C Meissner (7 out of 34 patents)

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