CIPO Patents = 1

Trademarks = 2

Forward Citations = 34

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11 inventors (with patents filed for the assignee):

Michael E Chalkley (2 out of 6 patents)

Michael J Collins (2 out of 10 patents)

Derek G Kerfoot (2 out of 9 patents)

4. Rein Raudsepp (1 out of 2 patents)

5. Hugh C Scheie (1 out of 2 patents)

6. Derek E Kerfoot (1 out of 2 patents)

7. Ian M Masters (1 out of 13 patents)

8. Manher M Makwana (1 out of 2 patents)

9. Michael Edward Chalkley (0 patent)

10. Michael Joseph Collins (0 patent)

11. Ian Martin Masters (0 patent)

5 patents: Sort by Forward Citations

1. 5468281 - Process for the separation of cobalt from nickel (1995-11-21),

2. 5403571 - Purification of elemental sulphur (1995-04-04),

3. 5348713 - Recovery of metal values from zinc plant residues (1994-09-20),

4. 5344479 - Upgrading copper sulphide residues containing nickel and arsenic (1994-09-06),

5. 5246481 - Production of metallic powder (1993-09-21),

Sherritt Gordon Limited is a Canadian diversified resource company with interests in nickel, cobalt, oil, and gas. It operates mines, processing plants, and refineries in Canada, Cuba, and Madagascar. Sherritt is committed to sustainable development and responsible business practices.

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

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USPTO Data Jan 1 1976 - Dec 9 2025

5 Patents

#46 in Edmonton

#2,750 in Canada

Edmonton, Canada

Sherritt Gordon Limited