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HAND TOOL DESIGN CORP

Overview
  • Total Patents
    128
About

HAND TOOL DESIGN CORP has a total of 128 patent applications. Its first patent ever was published in 1993. It filed its patents most often in United States, EPO (European Patent Office) and Taiwan. Its main competitors in its focus markets machine tools, machines and mechanical elements are KOKEN TOOL, BUCHANAN NIGEL and PETERSEN MFG.

Patent filings per year

Chart showing HAND TOOL DESIGN CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Arnold Robert L 23
#2 Ling David 21
#3 Chow Jessie 18
#4 Tuan-Mu Hsien-Chung 13
#5 Hu Bobby 13
#6 Delaney Dana L 9
#7 Taggart Kenneth 7
#8 Chaconas Peter C 7
#9 Chaconas Peter Constantine 7
#10 Ma Nai-Lin 6

Latest patents

Publication Filing date Title
CN1550292A Geared serpentine belt tool
EP1391267A2 Reversible ratcheting tool
EP1457292A1 Tool bit/handle connector
EP1457291A1 Connection of tool handle with tool bit
JP2004155486A Toolbox
US6701768B2 Process for making ratchet wheels
US2003217622A1 Replaceable tool tip
US2003177871A1 Ratchet wrench
US6712224B2 Tool rack assembly
EP1270149A1 Reversible ratchet wrench with high torsion
EP1245339A1 Spanner with prevention of disengagement of fastener
US6523687B2 Toolbox with dual tool-receiving grooves and display in both sides thereof
GB0028509D0 Box spanner
US6389931B1 Extension to a driver tool
US6260448B1 Top load ratchet wrench
US6134990A Ratcheting tool with improved gear wheel/pawl engagement
US6230591B1 Reversible ratcheting tool with improved gear wheel/pawl engagement
DE19935142A1 Plug-in adapter for combination keys
US6240813B1 Drive socket
US6126004A Tool display box