Assignee
CENTER ROCK INC
US·12 granted patents·2 pending applications·20 citations·filing 2013–2024
Top patents by PatentIndex Score
14 records- 0178US10100578B2Pressure control check valve for a down-the-hole drill hammerCENTER ROCK INC·Filed 2014·Granted Oct 16, 2018·5 cites·26 claims
- 0273US12492597B1Air rotary system for a down hole drill assemblyCENTER ROCK INC·Filed 2024·Granted Dec 9, 2025·0 cites·25 claims
- 0370US12392202B2Down-the-hole drill hammer having a ribbed exhaust tubeCENTER ROCK INC·Filed 2023·Granted Aug 19, 2025·0 cites·19 claims
- 0470US10669781B2Down-the-hole drill hammer having a roller bearing assemblyCENTER ROCK INC·Filed 2017·Granted Jun 2, 2020·1 cites·20 claims
- 0569US11078736B2Flow diversion sub for a down-the-hole drill hammerCENTER ROCK INC·Filed 2018·Granted Aug 3, 2021·1 cites·21 claims
- 0664USD872142SDrill bit for a down-the-hole drill hammerCENTER ROCK INC·Filed 2017·Granted Jan 7, 2020·9 cites·1 claims
- 0762US12523102B2Down-the-hole hammer having an inverted casingCENTER ROCK INC·Filed 2024·Granted Jan 13, 2026·0 cites·20 claims
- 0860US9938774B2Non-rotating drill bit for a down-the-hole drill hammerCENTER ROCK INC·Filed 2013·Granted Apr 10, 2018·1 cites·16 claims
- 0959US12291925B1Underreamer drill hammerCENTER ROCK INC·Filed 2023·Granted May 6, 2025·0 cites·21 claims
- 1057US10024103B2Down-the-hole drill hammer having a roller ramp clutchCENTER ROCK INC·Filed 2016·Granted Jul 17, 2018·1 cites·20 claims
- 1156US2025109634A1Down-the-hole drill hammer having a coaxial accumulatorCENTER ROCK INC·Filed 2024·Application pending·0 cites
- 1253US2024254860A1Down-the-hole drill hammer having a piston follower valveCENTER ROCK INC·Filed 2024·Application pending·0 cites
- 1351US9821422B2Drill bit for a down-the-hole drill hammer having spirally arranged cutting insertsCENTER ROCK INC·Filed 2015·Granted Nov 21, 2017·0 cites·13 claims
- 1439USD873316SNon-rotating drill bit for a down-the-hole drill hammerCENTER ROCK INC·Filed 2017·Granted Jan 21, 2020·2 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when CENTER ROCK INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →