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Green River, WY, United States of America

Intermountain Research and Development Corporation

USPTO Granted Patents = 17

Forward Citations = 263

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21 inventors (with patents filed for the assignee):

Henry A Pfeffer (4 out of 20 patents)

William C Copenhafer (4 out of 19 patents)

Eric Rau (2 out of 3 patents)

4. John Walden (2 out of 7 patents)

5. Joseph M Ilardi (2 out of 6 patents)

6. Francis Rauh (2 out of 3 patents)

7. Michael J Cyran (2 out of 2 patents)

8. William R Frint (1 out of 7 patents)

9. Morton Meadow (1 out of 6 patents)

10. Walter Lobunez (1 out of 4 patents)

11. Nam Kyun Kim (1 out of 1 patent)

12. David Goldstein (1 out of 6 patents)

13. Marinus J Baadsgaard (1 out of 1 patent)

14. Michael L Pinsky (1 out of 5 patents)

15. John J Sinsky (1 out of 1 patent)

17 patents: Sort by Forward Citations

1. 4781899 - Purification of crystallized solids made via continuous crystallization (1988-11-01),

2. 4654204 - Production of sodium bicarbonate by reversion of soda-type feed salt (1987-03-31),

3. 4652054 - Solution mining of trona or nahcolite ore with (1987-03-24),

4. 4588569 - Dry injection flue gas desulfurization process using absorptive soda ash (1986-05-13),

5. 4557910 - Production of soda ash from nahcolite (1985-12-10),

6. 4555391 - Dry injection flue gas desulfurization process (1985-11-26),

7. 4519806 - Enhanced recovery of soda ash from aqueous sodium carbonate solutions (1985-05-28),

8. 4498706 - Solution mining of trona or nahcolite ore with aqueous NaOH and HCl (1985-02-12),

9. 4462794 - Method of operating a rotary calciner retrofitted to coal-firing (1984-07-31),

10. 4401635 - Recovery of alkali values from salt-containing trona deposits (1983-08-30),

11. 4375454 - Electrostatic enrichment of trona and nahcolite ores (1983-03-01),

12. 4285915 - Recovery of alkali values from trona ore (1981-08-25),

13. 4219133 - Storage level monitor (1980-08-26),

14. 4021527 - Production of sodium carbonate (1977-05-03),

15. 4019872 - Producing sodium carbonate monohydrate from carbonate solution including (1977-04-26),

Company Overview

Intermountain Research and Development Corporation, based in Green River, Wyoming, specializes in advanced research and development across various technology domains. The organization focuses on innovative solutions in fields such as environmental technology, energy efficiency, and materials science. By leveraging its expertise, Intermountain aims to address complex challenges and contribute to sustainable development initiatives, making a significant impact within both local and broader contexts.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

17 Patents

#1 in Green River, WY

#14 in Wyoming

#18,903 in US

#35,948 in the World

Green River, WY, United States of America

Intermountain Research and Development Corporation

Forward Citations = 263

21 inventors:

Henry A Pfeffer (4 out of 20 patents)

William C Copenhafer (4 out of 19 patents)

Eric Rau (2 out of 3 patents)

4. John Walden (2 out of 7 patents)

5. Joseph M Ilardi (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Intermountain Research and Development Corporation. Retrieved from https://idiyas.com/company/intermountain-research-and-development

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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