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For the Inventor, By the Inventor

Christiana, DE, United States of America

Hand Tool Design Corporation


USPTO Granted Patents = 50



Trademarks = 6

Forward Citations = 1,358

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28 inventors (with patents filed for the assignee):

goldMedal David Ling (12 out of 17 patents)

silverMedal Robert L Arnold (9 out of 34 patents)

bronzeMedal Peter C Chaconas (6 out of 26 patents)

4.  James A Van Lenten (5 out of 8 patents)

5.  Bobby Hu (4 out of 202 patents)

6.  Hsien-Chung Tuan-Mu (4 out of 17 patents)

7.  Jessie Chow (4 out of 23 patents)

8.  Kenneth Taggart (3 out of 3 patents)

9.  Paul S Steinweg (2 out of 4 patents)

10.  Dana L Delaney (2 out of 2 patents)

11.  Jackie L Hyatt (2 out of 2 patents)

12.  Derek Richner (2 out of 2 patents)

13.  Richard P Folkenroth (1 out of 17 patents)

14.  Kenneth J Taggart, Sr (1 out of 8 patents)

15.  Frank Sterpka (1 out of 26 patents)


Core Competencies:
Replaceable Tool Tip
Ratchet Wrench
Tool Rack Assembly
Laser Etched Socket
Reversible Ratchet Wrench
Impact Universal Joint
Tool Display Box
Portable Tool Holder
Ergonomic Handle System
Hacksaw Blade Tension
Pawl Module
Scaffold Prybar Ratchet

50 patents:

1. 6732617 - Replaceable tool tip (2004-05-11),
2. 6712224 - Tool rack assembly (2004-03-30),
3. 6711973 - Ratchet wrench (2004-03-30),
4. 6701768 - Process for making ratchet wheels (2004-03-09),
5. D484376 - Laser etched socket (2003-12-31),
6. D481612 - Tool handle (2003-11-05),
7. 6629477 - Reversible ratchet wrench with high torsion (2003-10-07),
8. 6523687 - Toolbox with dual tool-receiving grooves and display in both sides thereof (2003-02-25),
9. D461311 - Caddy for tools (2002-08-14),
10. 6390929 - Method for making drive sockets (2002-05-21),
11. 6389931 - Extension to a driver tool (2002-05-21),
12. 6260448 - Top load ratchet wrench (2001-07-17),
13. 6240813 - Drive socket (2001-06-05),
14. 6230591 - Reversible ratcheting tool with improved gear wheel/pawl engagement (2001-05-15),
15. RE37129 - Display pack having a rotatable security member (2001-04-10),
Hand Tool Design Corporation is a leading company in the field of hand tool design and manufacturing. With over 20 years of experience, we specialize in creating innovative, high-quality hand tools that are designed to meet the needs of professionals across various industries. Our team of skilled designers and engineers utilize state-of-the-art technology to develop tools that are ergonomically designed, durable, and efficient. We are committed to providing our customers with the best hand tools that offer superior performance and lasting value.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

50 Patents

#3 in Christiana, DE

#125 in Delaware

#6,761 in US

#13,579 in the World

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Christiana, DE, United States of America

Hand Tool Design Corporation

Forward Citations = 1,358

28 inventors:

goldMedal David Ling (12 out of 17 patents)

silverMedal Robert L Arnold (9 out of 34 patents)

bronzeMedal Peter C Chaconas (6 out of 26 patents)

4.  James A Van Lenten (5 out of 8 patents)

5.  Bobby Hu (4 out of 202 patents)

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