For the Inventor, By the Inventor

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Golden, CO, United States of America

Hazen Research, Inc.

USPTO Granted Patents = 43

Forward Citations = 507

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26 inventors (with patents filed for the assignee):

Ronald L Turner (13 out of 19 patents)

James K Kindig (13 out of 13 patents)

Enzo L Coltrinari (8 out of 18 patents)

4. James E Reynolds (8 out of 21 patents)

5. Robert A Reeves (6 out of 14 patents)

6. Charlie W Kenney (6 out of 7 patents)

7. Mark H Berggren (5 out of 36 patents)

8. Wayne C Hazen (3 out of 12 patents)

9. Frank M Stephens, Jr (3 out of 17 patents)

10. Jerome P Downey (3 out of 8 patents)

11. Alan R Williams (2 out of 5 patents)

12. Kang Sun (1 out of 1 patent)

13. David R Baughman (1 out of 35 patents)

14. Paul B Queneau (1 out of 30 patents)

15. John P Hager (1 out of 13 patents)

Core Competencies:

Nickel-Rich Cathode Materials

Rare Earth Recovery

Dry Dust Control

Thermal Properties Control

Lead Leaching Reduction

Heavy Metal Recovery

Hydrometallurgical Processes

Sulfide Ore Beneficiation

Coal Treatment

Solar Energy Collectors

Electrolytic Cells

Metal Value Recovery

43 patents: Sort by Forward Citations

1. 11664498 - Compositionally gradient nickel-rich cathode materials and methods for the manufacture thereof (2023-05-30),

2. 10640847 - Recovery of rare earths from concentrates containing fluorine (2020-05-05),

3. 7208023 - Dry dust control materials (2007-04-24),

4. 6786941 - Methods of controlling the density and thermal properties of bulk materials (2004-09-07),

5. 6422494 - Methods of controlling the density and thermal properties of bulk materials (2002-07-23),

6. 6231627 - Method to reduce oxidative deterioration of bulk materials (2001-05-15),

7. 5919277 - Method to reduce oxidative deterioration of bulk materials (1999-07-06),

8. 5904783 - Method for reducing lead leaching in fixtures (1999-05-18),

9. 5762891 - Process for stabilization of arsenic (1998-06-09),

10. 5725613 - Method to reduce oxidative deterioration of bulk materials (1998-03-10),

11. 5660735 - Method for removing metals from waste solutions (1997-08-26),

12. 5544859 - Apparatus and method for inhibiting the leaching of lead in water (1996-08-13),

13. 5536416 - Method for removing metals from a solution (1996-07-16),

14. 5399322 - Selective recovery of dissolved metals and preparation of metal salt (1995-03-21),

15. 5320759 - Selective recovery of heavy metals using xanthates (1994-06-14),

Hazen Research, Inc. is an international research and development firm specializing in process chemistry, extractive metallurgy, and mineral processing. With over 50 years of experience, Hazen Research provides a wide range of services including laboratory testing, pilot-scale testing, and process optimization. They work with clients from various industries including mining, renewable energy, environmental engineering, and more. Visit their website to learn more about their capabilities and expertise.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

43 Patents

#9 in Golden, CO

#148 in Colorado

#7,816 in US

#15,570 in the World

Golden, CO, United States of America

Hazen Research, Inc.

Forward Citations = 507

26 inventors:

Ronald L Turner (13 out of 19 patents)

James K Kindig (13 out of 13 patents)

Enzo L Coltrinari (8 out of 18 patents)

4. James E Reynolds (8 out of 21 patents)

5. Robert A Reeves (6 out of 14 patents)

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