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USPTO Data Jan 1 1976 - Oct 20 2026
50 Patents
#103 in Wilmington, DE
#126 in Delaware
#7,011 in US
#14,024 in the World
Hand Tool Design Corporation
Forward Citations = 1,398
28 inventors:
Wilmington, DE, United States of America
Hand Tool Design Corporation
% Expired Patents = 8.0
CIPO Patents = 1
EPO Patents = 1
Trademarks = 6
Forward Citations = 1,398
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28 inventors (with patents filed for the assignee):
David Ling (12 out of 17 patents)
Robert L Arnold (9 out of 34 patents)
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. Pei Y Lee (4 out of 4 patents)
9. Christopher E Doles (4 out of 4 patents)
10. Kenneth Taggart (3 out of 3 patents)
11. Paul S Steinweg (2 out of 4 patents)
12. Dana L Delaney (2 out of 2 patents)
13. Jackie L Hyatt (2 out of 2 patents)
14. Derek Richner (2 out of 2 patents)
15. Richard P Folkenroth (1 out of 17 patents)
Core Competencies:
Tool Reversing Lever
Replaceable Tool Tip
Ratchet Wrench
Tool Rack Assembly
Laser Etched Socket
Reversible Ratchet Wrench
Tool Display Box
Impact Universal Joint
Ergonomic Handle System
Pawl Module
Hacksaw Mechanism
Portable Tool Holder
50 patents:
Company Overview
Hand Tool Design Corporation, based in Wilmington, DE, specializes in the innovation and manufacturing of advanced hand tools. The company focuses on developing technologies such as tool reversing levers, replaceable tool tips, and ratchet wrenches, enhancing user efficiency and versatility. Their product range also includes tool rack assemblies, laser etched sockets, and impact universal joints, catering to both professional and consumer markets. With a commitment to quality and functionality, Hand Tool Design Corporation continues to lead in the hand tool design sector.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hand Tool Design Corporation. Retrieved from https://idiyas.com/company/hand-tool-design
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]
1 patent (CIPO):
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]
1 patent (EPO):
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]