For the Inventor, By the Inventor

Enter assignee name

Vancouver, Canada

Placer Dome Technical Services Limited

USPTO Granted Patents = 16

% Expired Patents = 43.8

CIPO Patents = 10

Forward Citations = 304

Loading Chart...

Loading Chart...

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),

Placer Dome Technical Services Limited provides a wide range of technical and consulting services to the mining industry. With expertise in mining engineering, geotechnical engineering, environmental management, and mine planning, we offer innovative solutions to maximize the value and sustainability of mining operations. Our team of experienced professionals work closely with clients to plan and execute mining projects, optimize production processes, and address environmental and social challenges in accordance with international standards. Visit our website for more information and to explore our comprehensive range of services.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

16 Patents

#54 in Vancouver

#929 in Canada

#37,739 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)

Please report any incorrect information to [email protected]

Loading…