CIPO Patents = 2

Forward Citations = 15

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8 inventors (with patents filed for the assignee):

Harold M Ray (2 out of 2 patents)

Anthony W Worcester (2 out of 2 patents)

John C Morrisey, Iv (2 out of 2 patents)

4. Nathaniel Arbiter (1 out of 9 patents)

5. Carlos E Aguirre (1 out of 3 patents)

6. John T O'Reilly (1 out of 1 patent)

7. Quentin J Schmidt (1 out of 1 patent)

8. Kai Ravnborg (1 out of 1 patent)

9. John C Morrisey (0 patent)

5 patents: Sort by Forward Citations

1. 5925862 - Process for the recovery of cobalt from ores containing metal sulfides (1999-07-20),

2. 5122408 - Two-sided lead composite and method of making same (1992-06-16),

3. 5078860 - Sequential and selective flotation of sulfide ores containing copper and (1992-01-07),

4. 5074994 - Sequential and selective flotation of sulfide ores (1991-12-24),

5. 4808376 - Method of alloying aluminum and calcium into lead (1989-02-28),

The Doe Run Company is a leading natural resources and mining company dedicated to responsible mining and metal production. With locations across North America, Doe Run is committed to sustainable practices and environmental stewardship. Doe Run specializes in lead, copper and zinc production, as well as recycling and resource recovery.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

5 Patents

#266 in St. Louis, MO

#694 in Missouri

#50,174 in US

St. Louis, MO, United States of America

The Doe Run Company