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For the Inventor, By the Inventor

Berlin, PA, United States of America

Center Rock Inc.

Calculating rank
USPTO Granted Patents = 23

% Expired Patents = 4.3


Trademarks = 11

Forward Citations = 121

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6 inventors (with patents filed for the assignee):

goldMedal Leland H Lyon (18 out of 44 patents)

silverMedal Warren Thomas Lay (8 out of 18 patents)

bronzeMedal Austin C Hine (3 out of 3 patents)

4.  Abram Simeon Lance (1 out of 1 patent)

5.  Brandon W Fisher (1 out of 1 patent)

6.  Daniel J Reed (1 out of 1 patent)


23 patents:

1. 12723469 - Down-the-hole drill hammer having a piston follower valve (2026-09-01),
2. D1142543 - DRILL BIT (2026-08-18),
3. 12523102 - Down-the-hole hammer having an inverted casing (2026-01-13),
4. 12492597 - Air rotary system for a down hole drill assembly (2025-12-09),
5. 12392202 - Down-the-hole drill hammer having a ribbed exhaust tube (2025-08-19),
6. 12291925 - Underreamer drill hammer (2025-05-06),
7. 11078736 - Flow diversion sub for a down-the-hole drill hammer (2021-08-03),
8. 10669781 - Down-the-hole drill hammer having a roller bearing assembly (2020-06-02),
9. D873316 - Non-rotating drill bit for a down-the-hole drill hammer (2020-01-21),
10. D872142 - Drill bit for a down-the-hole drill hammer (2020-01-07),
11. 10100578 - Pressure control check valve for a down-the-hole drill hammer (2018-10-16),
12. 10024103 - Down-the-hole drill hammer having a roller ramp clutch (2018-07-17),
13. 9938774 - Non-rotating drill bit for a down-the-hole drill hammer (2018-04-10),
14. 9821422 - Drill bit for a down-the-hole drill hammer having spirally arranged cutting inserts (2017-11-21),
15. 8915314 - Down-the-hole drill drive coupling (2014-12-23),
Company Overview
Center Rock Inc. is a specialized manufacturer based in Berlin, Pennsylvania, focusing on innovative drilling solutions for the mining and construction industries. The company is renowned for its development of advanced rock drilling technologies, including patented down-the-hole hammers and drill bits that enhance efficiency and performance in challenging environments. Center Rock's expertise extends to providing tailored solutions that meet the unique demands of its clients, positioning it as a leader in the field of drilling equipment and technology.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

Center Rock Inc. USPTO Patent Assignee Logo
23 Patents

#1 in Berlin, PA

#526 in Pennsylvania

#14,466 in US

#27,777 in the World

Berlin, PA (US)
Berlin, PA, United States of America

Center Rock Inc.

Forward Citations = 121

6 inventors:

goldMedal Leland H Lyon (18 out of 44 patents)

silverMedal Warren Thomas Lay (8 out of 18 patents)

bronzeMedal Austin C Hine (3 out of 3 patents)

4.  Abram Simeon Lance (1 out of 1 patent)

5.  Brandon W Fisher (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Center Rock Inc.. Retrieved from https://idiyas.com/company/center-rock

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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