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JOULWATT TECH HANGZHOU CO LTD

Overview
  • Total Patents
    30
  • GoodIP Patent Rank
    52,921
  • Filing trend
    ⇩ 69.0%
About

JOULWATT TECH HANGZHOU CO LTD has a total of 30 patent applications. It decreased the IP activity by 69.0%. Its first patent ever was published in 2015. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy, environmental technology and basic communication technologies are JACQUES RUSSELL, ON BRIGHT ELECTRONICS SHANGHAI CO LTD and LEE LI-MIN.

Patent filings in countries

World map showing JOULWATT TECH HANGZHOU CO LTDs patent filings in countries
# Country Total Patents
#1 United States 30

Patent filings per year

Chart showing JOULWATT TECH HANGZHOU CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhou Xunwei 30
#2 Wong Pitleong 23
#3 Ren Yuancheng 19
#4 Chan Siopang 6
#5 Liu Guoqiang 4
#6 Long Hao 3
#7 Xu Feng 3
#8 Zhang Junming 3
#9 Xu Aimin 3
#10 Dou Xunjin 3

Latest patents

Publication Filing date Title
US2019356307A1 Circuit and method for detecting current zero-crossing point and circuit and method for detecting load voltage
US2019068072A1 Isolated switch-mode power supply and control circuit and control method for isolated switch-mode power supply
US10199949B1 Active-clamp flyback circuit and control method thereof
US10090750B1 Isolating switch circuit and control method thereof
US2018192491A1 Dimming circuit, dimming method and LED driving circuit
US2018091126A1 Integrated circuit with multiplexed pin and pin multiplexing method
US2018062632A1 Control method and control circuit for switch circuit and switch circuit device
US2018062526A1 Control circuit and control method for switch circuit and switching-mode power supply circuit
US2018062641A1 Drive method and drive circuit for power switch, and power supply system
US2018041111A1 Circuit and method for overcurrent control and power supply system including the same
US2017338814A1 Switch control circuit and switch circuit
US2018139816A1 Bleeder circuit and control method thereof, and LED control circuit
US2017222550A1 Power supply protection circuit and method
US2018115234A1 Bleeder circuit
US2018063911A1 Ripple removing circuit and LED control circuit applying the same
US2017310313A1 Circuit and method for detecting current zero-crossing point, and circuit and method for detecting load voltage