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CHANG CHIH-MIN

Overview
  • Total Patents
    26
  • GoodIP Patent Rank
    190,882
  • Filing trend
    ⇩ 100.0%
About

CHANG CHIH-MIN has a total of 26 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2000. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machine tools, electrical machinery and energy and packaging and shipping are HSIEH CHIH-CHING, INFAR IND CO LTD and HSIEN CHIH-CHING.

Patent filings in countries

World map showing CHANG CHIH-MINs patent filings in countries
# Country Total Patents
#1 United States 23
#2 Canada 1
#3 United Kingdom 1
#4 Taiwan 1

Patent filings per year

Chart showing CHANG CHIH-MINs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chang Chih-Min 25
#2 Huang Ping-Wen 1

Latest patents

Publication Filing date Title
US2017368441A1 Takedown structure for game
US2016052123A1 Rotary wrench
US2016016305A1 Flip-flop toolbox
US2016016297A1 Wrench capable of adjusting operating angle
US2016016294A1 Rotatable handle for wrench
US2015158156A1 Quick rotatable wrench
US2015158188A1 Force-boosted shears capable of pulling nail
US2014053690A1 Detachable ratchet wrench
US2014020519A1 Ratchet wrench
US2013314912A1 Led light bulb with large-angle light emission
US2013118317A1 Water and dust resistant ratchet wrench
US2013139655A1 Ratchet wrench being conveniently assembled
US2013074659A1 Ratchet wrench
US2012210829A1 Ratchet wrench capable of preventing disengagement of nut
US2012017729A1 Wrench with ergonomic twisted handle
US2011232424A1 Wrench for different-sized nuts
US2011072940A1 Wrench having detachable wrench head
US2010242685A1 Ratchet wrench capable of preventing disengagement of nut
US2009049957A1 Ratchet wrench
TW200709688A System and method for providing the data required by the subscriber