For the Inventor, By the Inventor

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Shannon, Ireland

Mincon International Limited

USPTO Granted Patents = 17

% Expired Patents = 17.6

CIPO Patents = 1

EPO Patents = 17

Trademarks = 2

Forward Citations = 3

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7 inventors (with patents filed for the assignee):

Joseph Purcell (10 out of 14 patents)

Markku Keskiniva (6 out of 6 patents)

John Kosovich (3 out of 3 patents)

4. Ben Sexton (2 out of 2 patents)

5. Ciaran Purcell (1 out of 1 patent)

6. Hongbin Wang (1 out of 1 patent)

7. Keskiniva Markku (1 out of 1 patent)

8. Simon Duck (1 out of 1 patent)

9. Carl Blundell (1 out of 1 patent)

10. Tony Wang (0 patent)

11. Keskiniva Markku (0 patent)

12. Jospeh Purcell (0 patent)

17 patents: Sort by Forward Citations

1. 12680386 - Hybrid hydraulic down-the-hole hammer (2026-07-14),

2. 12662880 - Hydraulic down-the-hole hammer and subsea pile (2026-06-23),

3. 12644338 - Drill bit assembly for reverse circulation hammer (2026-06-02),

4. 12252937 - Drilling device with fluid column resonator (2025-03-18),

5. 12146387 - Flapper valve for percussion drill tools (2024-11-19),

6. 12123260 - Drill bit assembly for fluid-operated percussion drill tools (2024-10-22),

7. 12024950 - Flushing and connection arrangements for percussion drill tools (2024-07-02),

8. 11739593 - Drill bit assembly for percussion drill tools (2023-08-29),

9. 11725456 - Hydraulic down-the-hole hammer and subsea pile (2023-08-15),

10. 11680446 - Valve piloting arrangements for hydraulic percussion devices (2023-06-20),

11. 11236549 - Drill bit with detachable bit head (2022-02-01),

12. 11111729 - Multi-indenter hammer drill bits and method of fabricating (2021-09-07),

13. 10876359 - Multi-accumulator arrangement for hydraulic percussion mechanism (2020-12-29),

14. 10808476 - Drill rod for percussion drill tool (2020-10-20),

15. 9103165 - Down-the-hole hammer (2015-08-11),

Mincon International Limited is a global manufacturer and supplier of rock drilling tools and hard rock drilling equipment. With over 40 years of experience, Mincon has a strong reputation for delivering innovative solutions for the mining, construction, geothermal, and water well drilling industries. The company is headquartered in Shannon, Ireland, and has operations in over 40 countries worldwide.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

17 Patents

#1 in Shannon

#132 in Ireland

#35,857 in the World

Shannon, Ireland

Mincon International Limited

Forward Citations = 3

7 inventors:

Joseph Purcell (10 out of 14 patents)

Markku Keskiniva (6 out of 6 patents)

John Kosovich (3 out of 3 patents)

4. Ben Sexton (2 out of 2 patents)

5. Ciaran Purcell (1 out of 1 patent)

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