Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Ling — 22 Patents

HDHand Tool Design: 12 patents #1 of 29Top 4%
ETEasco Hand Tools: 3 patents #16 of 45Top 40%
IPIpass: 2 patents #11 of 38Top 30%
IBM: 1 patents #44,878 of 70,183Top 65%
Motorola: 1 patents #9,998 of 14,142Top 75%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
David Ling has been granted 22 US patents while listed as an inventor at Hand Tool Design. The first was granted in 1999 and the most recent in January 2013. David Ling ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list David Ling in Taichung, TX, TW.

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8359563 Moment-based characterization waveform for static timing analysis Soroush Abbaspour, Peter Feldmann, Chandramouli Visweswariah 2013-01-22 $9,574,000
7840458 Internet settlement system Lynn Y. Liu, Xiaomei Guan, Michael Hayden 2010-11-23 $748,000
7797236 Internet settlement system Lynn Y. Liu, Xiaomei Guan, Michael Hayden 2010-09-14 $620,000
7673542 Spanner with prevention of disengagement of fasteners Hsien-Chung Tuan-Mu 2010-03-09
7340983 Spanner with prevention of disengagement of fasteners Hsien-Chung Tuan-Mu 2008-03-11
7175032 Tool rack assembly 2007-02-13
7036227 Process for making ratchet wheels Hsien-Chung Tuan-Mu 2006-05-02
6961918 System for intellectual property reuse in integrated circuit design Robert E. Garner, David N. Gardner, Jeffrey Jussel, Anna Elman, Alvaro Eduardo Benavides +1 more 2005-11-01
6712224 Tool rack assembly 2004-03-30
6701768 Process for making ratchet wheels Hsien-Chung Tuan-Mu 2004-03-09
6629477 Reversible ratchet wrench with high torsion Hsien-Chung Tuan-Mu 2003-10-07
6523687 Toolbox with dual tool-receiving grooves and display in both sides thereof 2003-02-25
6257096 Socket adaptor for ratchet 2001-07-10
6230591 Reversible ratcheting tool with improved gear wheel/pawl engagement Hsien-Chung Tuan-Mu 2001-05-15
6134990 Ratcheting tool with improved gear wheel/pawl engagement Hsien-Chung Tuan-Mu 2000-10-24
6126004 Tool display box 2000-10-03
D430799 Tool display box 2000-09-12
6076669 Tool display rack 2000-06-20
D426151 Tool display box 2000-06-06
5988381 Tool display pack with a security device 1999-11-23
5899329 Display tool box Bobby Hu 1999-05-04
5894423 Data processing system having an auto-ranging low voltage detection circuit Lloyd P. Matthews, Thomas Lovell Portlock, Edward J. Hathaway 1999-04-13 $23,332,000