Learn more

DEFOND MFG LTD

Overview
  • Total Patents
    38
About

DEFOND MFG LTD has a total of 38 patent applications. Its first patent ever was published in 1987. It filed its patents most often in United States, United Kingdom and China. Its main competitors in its focus markets electrical machinery and energy, furniture and games and machine tools are AGUT SA, CLEAVELAND PRICE INC and SPINDLER DEISSLER STARKSTROM.

Patent filings in countries

World map showing DEFOND MFG LTDs patent filings in countries
# Country Total Patents
#1 United States 20
#2 United Kingdom 13
#3 China 3
#4 Hong Kong 2

Patent filings per year

Chart showing DEFOND MFG LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chu Raymond Wai Hang 19
#2 Lam Hin Ming 5
#3 Cheung Wai Kuen 2
#4 Wong Kin Yu 2
#5 Hang Chu Raymond Wai 1
#6 Lai Chi Leung 1
#7 Chu Raymond 1
#8 Ching Thomas Ka Wa 1
#9 Yu Wong Kin 1

Latest patents

Publication Filing date Title
US2004134766A1 Power tool trigger assembly
US6710277B1 Electrical switch
US2004108190A1 Electrical slide switch
US2004041531A1 Power tool trigger control
US6605787B1 Electrical switch
US2004040827A1 Electrical switch
US2004020752A1 Electrical switch
US6590175B1 Illuminated rocker switch with resistor
US2003210123A1 Toroidal core for a toroid
US2003184161A1 Power supply module for electrical power tools
US2003141765A1 Electrical switch assembly
US2003132725A1 Controller for motor driven device
US2003043004A1 Circuit breaker
US6483063B2 Electrical switch including a metal heat sink
US6388408B1 Motor current sensing in electric power tools
US6281482B1 Electrical switch
US6274828B1 On-off switch with off position locking actuator
US6340926B1 Power plug with circuit breaker
GB9613835D0 Power tool speed controller
GB9525831D0 Electrical switch