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For the Inventor, By the Inventor

Vancouver, Canada

Cominco Engineering Services Ltd.


USPTO Granted Patents = 24


Forward Citations = 384

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10 inventors (with patents filed for the assignee):

goldMedal David L Jones (18 out of 20 patents)

silverMedal William A Meekel (4 out of 4 patents)

bronzeMedal Harold E Wyslouzil (4 out of 4 patents)

4.  Gale L Hubred (2 out of 22 patents)

5.  Rachel Moore (1 out of 1 patent)

6.  Susan Karen Stocker (1 out of 1 patent)

7.  Lorne M Wandzura (1 out of 1 patent)

8.  Donald E Morency (1 out of 1 patent)

9.  Peter H Dawson (1 out of 1 patent)

10.  Neville P Jordison (1 out of 1 patent)


24 patents:

1. 7438874 - Pressure oxidation leaching in the presence of an acidic solution of halide and sulfate ions from copper and base metal containing ore/concentrate (2008-10-21),
2. 7169371 - Process for the treatment of molybdenum concentrate (2007-01-30),
3. 6755891 - Process for the treatment or removal of impurities in a hydrometallurgical extraction process (2004-06-29),
4. 6471849 - Process for the recovery of zinc from a zinc sulphide ore or concentrate (2002-10-29),
5. 6455019 - Process for the extraction of copper from a sulphide copper ore or concentrate (2002-09-24),
6. 6383460 - Process for the recovery of nickel and/or cobalt from a concentrate (2002-05-07),
7. RE37251 - Chloride assisted hydrometallurgical extraction of metal (2001-07-03),
8. 6171564 - Process for extraction of metal from an ore or concentrate containing nickel and/or cobalt (2001-01-09),
9. 6054105 - Process for the solvent extraction of nickel and cobalt values in the (2000-04-25),
10. 5902474 - Chloride assisted hydrometallurgical extraction of metal (1999-05-11),
11. 5874055 - Chloride assisted hydrometallurgical extraction of metal (1999-02-23),
12. 5869012 - Chloride assisted hydrometallurgical extraction of metal (1999-02-09),
13. 5857516 - Pressure reducing heat exchanger (1999-01-12),
14. 5855858 - Process for the recovery of nickel and/or cobalt from an ore or (1999-01-05),
15. 5814228 - Flotation method and apparatus (1998-09-29),
Company Overview
Cominco Engineering Services Ltd. is a Vancouver-based firm specializing in engineering solutions for the mining and mineral processing sectors. The company focuses on providing innovative designs, project management, and technical expertise to enhance operational efficiency and sustainability in resource extraction. With a commitment to advancing technology in these industries, Cominco plays a vital role in supporting clients through the development of tailored engineering solutions that meet the evolving demands of the market.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

24 Patents

#31 in Vancouver

#605 in Canada

#26,660 in the World

Vancouver, CA
Vancouver, Canada

Cominco Engineering Services Ltd.

Forward Citations = 384

10 inventors:

goldMedal David L Jones (18 out of 20 patents)

silverMedal William A Meekel (4 out of 4 patents)

bronzeMedal Harold E Wyslouzil (4 out of 4 patents)

4.  Gale L Hubred (2 out of 22 patents)

5.  Rachel Moore (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cominco Engineering Services Ltd.. Retrieved from https://idiyas.com/company/cominco-engineering-services

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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