Forward Citations = 140

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8 inventors (with patents filed for the assignee):

Mark R Estabrook (7 out of 8 patents)

Robert J Fox (1 out of 9 patents)

Charles R Van Sickle (1 out of 1 patent)

4. Melvin Howard Zoiss (1 out of 1 patent)

5. Donald K Greenberg (1 out of 1 patent)

6. Roger Marriott (1 out of 1 patent)

7. James I Marchman (1 out of 1 patent)

8. Donald P Williams (1 out of 1 patent)

11 patents: Sort by Forward Citations

1. 5050352 - Honing stone assembly (1991-09-24),

2. 4850382 - Work booth for a robot (1989-07-25),

3. 4686035 - Cylindrical drum magnetic separator (1987-08-11),

4. 4673502 - Fixed filter drum and movable scraper (1987-06-16),

5. 4528776 - Honing machine with stonewear compensator (1985-07-16),

6. 4421647 - Filter with indexable filter web (1983-12-20),

7. 4199455 - Combined magnetic and cyclonic separating apparatus (1980-04-22),

8. 4110218 - Liquid cleaning apparatus having cyclonic separators (1978-08-29),

9. 4062780 - Vacuum filter with indexable filter web (1977-12-13),

10. 4025433 - Magnetic separating apparatus (1977-05-24),

11. 3972161 - Solid abrading tool with fiber abrasive (1976-08-03),

Company Overview

Barnes Drill Co., based in Rockford, Illinois, specializes in the design and manufacturing of advanced drilling equipment and solutions. The company focuses on delivering innovative technologies that enhance drilling efficiency and precision across various industries, including oil and gas, construction, and mining. With a commitment to quality and performance, Barnes Drill Co. leverages its expertise to meet the evolving needs of its clients, ensuring reliable and effective drilling operations in diverse environments.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

11 Patents

#35 in Rockford, IL

#1,336 in Illinois

#27,514 in US

#51,761 in the World

Rockford, IL, United States of America

Barnes Drill Co.

Forward Citations = 140

8 inventors:

Mark R Estabrook (7 out of 8 patents)

Robert J Fox (1 out of 9 patents)

Charles R Van Sickle (1 out of 1 patent)

4. Melvin Howard Zoiss (1 out of 1 patent)

5. Donald K Greenberg (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Barnes Drill Co.. Retrieved from https://idiyas.com/company/barnes-drill-company

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]