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For the Inventor, By the Inventor

Ashland, OR, United States of America

Darex Corporation

Calculating rank
USPTO Granted Patents = 86

% Expired Patents = 1.2


Trademarks = 24

Forward Citations = 384

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25 inventors (with patents filed for the assignee):

goldMedal Daniel T Dovel (46 out of 52 patents)

silverMedal Joseph T Zachariasen (22 out of 32 patents)

bronzeMedal Conner S MacFarlane (21 out of 21 patents)

4.  Steven Lee Baker (18 out of 18 patents)

5.  Jacob D Dovel (9 out of 9 patents)

6.  David A Bernard (7 out of 9 patents)

7.  Travis Campbell (6 out of 6 patents)

8.  William C Christian (4 out of 5 patents)

9.  Richard Allen Bernard (4 out of 4 patents)

10.  Arthur Alexander Bernard (3 out of 3 patents)

11.  Conner Samuel Macfarlane (3 out of 3 patents)

12.  Michael Edward Laut (2 out of 17 patents)

13.  Steven Bockmann (2 out of 4 patents)

14.  Daniel Riegels (2 out of 4 patents)

15.  Matthew S Ferdinand (2 out of 2 patents)


Core Competencies:
Cutting Tool
Knife Sharpener
Powered Sharpener
Abrasive Belt
Hand-Held Sharpener
Adjustable Support
Multi-Stage Sharpening
Precision Drill Sharpener
Rotatable Edge Guide
Utility Blades
Folding Knife
Abrasive Block

86 patents:

1. D1149605 - Knife (2026-09-29),
2. D1138633 - Knife sharpener handle (2026-08-04),
3. D1136856 - Knife sharpener (2026-07-28),
4. D1129228 - Tool sharpener (2026-06-09),
5. D1119293 - Tool sheath (2026-03-24),
6. D1116703 - Knife sharpener (2026-03-10),
7. D1104693 - Tool sharpener (2025-12-09),
8. 12447573 - Tool sharpener with concave sharpening surface (2025-10-21),
9. D1087714 - Knife sharpener (2025-08-12),
10. 12246465 - Folding knife, folding knife kit, knife kit, and methods (2025-03-11),
11. D1056844 - Power sharpener (2025-01-07),
12. D1054822 - Clamp for a sharpening device used to sharpen a cutting tool (2024-12-24),
13. D1054269 - Knife sharpener (2024-12-17),
14. D1044460 - Abrasive block support (2024-10-01),
15. 12083696 - Knife with sliding gear (2024-09-10),
Company Overview
Darex Corporation, headquartered in Ashland, Oregon, specializes in cutting tool sharpening technologies. The company develops a range of innovative sharpening solutions, including powered sharpeners and hand-held devices, designed to enhance the performance and longevity of cutting tools. Their expertise encompasses multi-stage sharpening systems and precision drill sharpeners, catering to both professional and consumer markets. Darex is committed to advancing the art of tool maintenance, ensuring users achieve optimal results with their cutting instruments.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Darex Corporation USPTO Patent Assignee Logo
86 Patents

#1 in Ashland, OR

#53 in Oregon

#4,339 in US

#8,877 in the World

Ashland, OR (US)
Ashland, OR, United States of America

Darex Corporation

Forward Citations = 384

25 inventors:

goldMedal Daniel T Dovel (46 out of 52 patents)

silverMedal Joseph T Zachariasen (22 out of 32 patents)

bronzeMedal Conner S MacFarlane (21 out of 21 patents)

4.  Steven Lee Baker (18 out of 18 patents)

5.  Jacob D Dovel (9 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Darex Corporation. Retrieved from https://idiyas.com/company/darex

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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