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Toronto, undefined

Sherritt Gordon Mines Limited

USPTO Granted Patents = 73

Trademarks = 2

Forward Citations = 907

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67 inventors (with patents filed for the assignee):

Donald R Weir (27 out of 28 patents)

Roman M Genik-Sas-Berezowsky (14 out of 15 patents)

Ian M Masters (10 out of 13 patents)

4. Wasyl Kunda (8 out of 10 patents)

5. Maurice A Clegg (7 out of 7 patents)

6. Verner B Sefton (7 out of 7 patents)

7. Godefridus M Swinkels (7 out of 13 patents)

8. Michael J Ruscoe (6 out of 6 patents)

9. Gerald L Bolton (5 out of 5 patents)

10. Willie H Seibt (4 out of 4 patents)

11. Derek G Kerfoot (3 out of 9 patents)

12. Edward Francis Milner (3 out of 7 patents)

13. Charles Ray Kirby (3 out of 4 patents)

14. Kshitindra M Sarkar (3 out of 3 patents)

15. Michael E Chalkley (2 out of 6 patents)

Core Competencies:

Zinc Recovery

Copper Powder Production

Gold Recovery

Silver Extraction

Nickel-Chromium Coatings

Platinum Group Metals

Hydrometallurgical Processes

Selenium Removal

Cobalt-Rare Earth Alloys

Mass Spectrometry

Abradable Seal Coatings

Metal Leaching

73 patents: Sort by Forward Citations

1. 4832925 - Recovery of zinc from zinc-containing sulphidic material (1989-05-23),

2. 4821800 - Filtering media for controlling the flow of sand during oil well (1989-04-18),

3. 4746378 - Process for producing Sm.sub.2 Co.sub.17 alloy suitable for use as (1988-05-24),

4. 4709148 - Quadrupole mass spectrometers (1987-11-24),

5. 4645532 - Production of fine spherical copper powder (1987-02-24),

6. 4632701 - Process for the recovery of silver from a residue essentially free of (1986-12-30),

7. 4610724 - Recovery of gold from refractory auriferous iron-containing sulphidic (1986-09-09),

8. 4606948 - Process for the production of nickel-chromium/chromium carbide coatings (1986-08-19),

9. 4606766 - Process for separately recovering gold and silver from solution by (1986-08-19),

10. 4606763 - Process for the pressure oxidation acid leaching of non-ferrous metal (1986-08-19),

11. 4605439 - Recovery of gold from refractory auriferous iron-containing sulphidic (1986-08-12),

12. 4594102 - Recovery of cobalt and nickel from sulphidic material (1986-06-10),

13. 4579761 - Method of making aureate colored coins, medallions and tokens and (1986-04-01),

14. 4571264 - Recovery of gold from refractory auriferous iron-containing sulphidic ore (1986-02-18),

15. 4571263 - Recovery of gold from refractory auriferous iron-containing sulphidic (1986-02-18),

Sherritt Gordon Mines Limited is a Canadian mining company that specializes in the production of nickel, cobalt, and other resources. With a rich history spanning over 90 years, Sherritt is known for its high-quality, sustainable mining practices. Their diversified portfolio includes mining operations in Canada, Cuba, and Madagascar. Sherritt is committed to responsible mining, environmental stewardship, and community engagement.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

73 Patents

#2 in Toronto

#4 in C

#9,816 in the World

Toronto, undefined

Sherritt Gordon Mines Limited

Forward Citations = 907

67 inventors:

Donald R Weir (27 out of 28 patents)

Roman M Genik-Sas-Berezowsky (14 out of 15 patents)

Ian M Masters (10 out of 13 patents)

4. Wasyl Kunda (8 out of 10 patents)

5. Maurice A Clegg (7 out of 7 patents)

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