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Vancouver, Canada

Placer Dome Technical Services Limited

USPTO Granted Patents = 16

% Expired Patents = 43.8

CIPO Patents = 10

Forward Citations = 304

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15 inventors (with patents filed for the assignee):

Jinxing Ji (12 out of 14 patents)

Paul George West-Sells (9 out of 10 patents)

Ralph Peter Hackl (9 out of 9 patents)

4. Christopher Andrew Fleming (8 out of 13 patents)

5. James A King (4 out of 10 patents)

6. Eric Jackson (2 out of 6 patents)

7. Cesare Giosue Ferron (2 out of 3 patents)

8. William M Moeny (1 out of 34 patents)

9. Simon Mark Jackson (1 out of 3 patents)

10. Jim Friant (1 out of 1 patent)

11. Marilyn Patricia Ann Hames (1 out of 1 patent)

12. Timothy B Dimock (1 out of 1 patent)

13. Edward William Drew Anwyll (1 out of 1 patent)

14. Fredric Christopher Delabbio (1 out of 2 patents)

15. Donald D Young (1 out of 5 patents)

16 patents: Sort by Forward Citations

1. 8821613 - Method for thiosulfate leaching of precious metal-containing materials (2014-09-02),

2. 8597399 - Method for thiosulfate leaching of precious metal-containing materials (2013-12-03),

3. 8097227 - Method for thiosulfate leaching of precious metal-containing materials (2012-01-17),

4. 8029751 - Reduction of lime consumption when treating refractory gold ores or concentrates (2011-10-04),

5. 7722840 - Method for thiosulfate leaching of precious metal-containing materials (2010-05-25),

6. 7704298 - Method for thiosulfate leaching of precious metal-containing materials (2010-04-27),

7. 7604783 - Reduction of lime consumption when treating refractor gold ores or concentrates (2009-10-20),

8. 7559974 - Method for thiosulfate leaching of precious metal-containing materials (2009-07-14),

9. 7544232 - Method for thiosulfate leaching of precious metal-containing materials (2009-06-09),

10. 7192093 - Excavation apparatus and method (2007-03-20),

11. 7066983 - Method for thiosulfate leaching of precious metal-containing materials (2006-06-27),

12. 7033480 - Process for recovering platinum group metals from material containing base metals (2006-04-25),

13. 6857706 - Mining method for steeply dipping ore bodies (2005-02-22),

14. 6761416 - Method and apparatus for a plasma-hydraulic continuous excavation system (2004-07-13),

15. 6660059 - Method for thiosulfate leaching of precious metal-containing materials (2003-12-09),

Company Overview

Placer Dome Technical Services Limited, based in Vancouver, Canada, specializes in providing innovative solutions and technical expertise in the mining and mineral exploration sectors. The company focuses on enhancing operational efficiency and sustainability through advanced technologies and methodologies. With a commitment to safety and environmental stewardship, Placer Dome Technical Services collaborates with industry partners to develop best practices and cutting-edge techniques that drive progress in resource extraction and processing.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

16 Patents

#55 in Vancouver

#930 in Canada

#37,831 in the World

Vancouver, Canada

Placer Dome Technical Services Limited

Forward Citations = 304

15 inventors:

Jinxing Ji (12 out of 14 patents)

Paul George West-Sells (9 out of 10 patents)

Ralph Peter Hackl (9 out of 9 patents)

4. Christopher Andrew Fleming (8 out of 13 patents)

5. James A King (4 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Placer Dome Technical Services Limited. Retrieved from https://idiyas.com/company/placer-dome-technical-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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