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LEE CHANG CHUAN

Overview
  • Total Patents
    29
About

LEE CHANG CHUAN has a total of 29 patent applications. Its first patent ever was published in 1992. It filed its patents most often in United States, Germany and Taiwan. Its main competitors in its focus markets machine tools, machines and mechanical elements are HSIEH CHIH CHING, HUANG CHIN-TAN and HOKUYOU SANGYO KK.

Patent filings in countries

World map showing LEE CHANG CHUANs patent filings in countries

Patent filings per year

Chart showing LEE CHANG CHUANs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Lee Chang Chuan 24
#2 Lee Chang-Chuan 5

Latest patents

Publication Filing date Title
TW201434592A Wrench
TW201431648A Wrench
TW201420280A Method for manufacturing ratchet wrench
TW201416182A Ratchet wrench
TW201416183A Combination structure of ratchet wrench and tool for driving and stopping a driving mechanism
US2007289414A1 Ratchet mechanism for hand tools
US2007245865A1 Tracing mechanism of torque adjustable wrenches
DE102007003840A1 Torque spanner with positioning facility, for handling nuts and bolts, has torque setting device, hollow handle, and rear cap containing positioning device
DE102006052480A1 Combination of fastener and attachment rod for connection with insert, has tube body and body connected with end of tube body whereby axial recess and tube body are formed at distal end of head which passes through radial opening
US7246544B1 Rotary wrench
GB0611177D0 Tracing mechanism of torque adjustable wrenches
US7124664B1 Ratchet wrench
GB0515245D0 A telescopic locating structure for a tool
DE102005025176A1 Ratchet wrench, comprising upper and lower thrust washer positioned at detent
US7051625B1 Detent structure of a torque wrench for adjusting operation angle thereof
US2006131472A1 Tool kit
US6978705B1 Torque wrench
US2006101952A1 Pawl mechanism of a ratchet wrench
DE19532926A1 Reversible ratchet mechanism
KR0131520B1 Reversible ratchet wrench and reversible ratchet mechanism