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Golden, CO, United States of America

Hazen Research, Inc.

Calculating rank

USPTO Granted Patents = 43

% Expired Patents = 2.3

Forward Citations = 521

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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 Cathodes

Rare Earth Recovery

Dust Control Materials

Metal Leaching

Oxidative Deterioration

Hydrometallurgy

Sulfide Ores

Coal Treatment

Zinc Recovery

Steel Production

Thermal Properties

Volatile Matter Analyzer

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),

Company Overview

Hazen Research, Inc., based in Golden, Colorado, specializes in advanced materials and processes for the mining and metallurgical industries. The company focuses on developing nickel-rich cathode materials and innovative solutions for rare earth recovery, enhancing the efficiency of hydrometallurgical processes, and improving lead leaching reduction techniques. Hazen also addresses environmental challenges through dry dust control and heavy metal recovery, while advancing sulfide ore beneficiation and thermal properties control to optimize resource extraction and sustainability.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

43 Patents

#9 in Golden, CO

#160 in Colorado

#8,108 in US

#16,056 in the World

Golden, CO, United States of America

Hazen Research, Inc.

Forward Citations = 521

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hazen Research, Inc.. Retrieved from https://idiyas.com/company/hazen-research

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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