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SONCA IND LTD

Overview
  • Total Patents
    40
About

SONCA IND LTD has a total of 40 patent applications. Its first patent ever was published in 1961. It filed its patents most often in United Kingdom, Hong Kong and United States. Its main competitors in its focus markets electrical machinery and energy, machines and environmental technology are KOLLATH FRANCIS C, SONCA PRODUCTS LTD and ZWEIBRUDER OPTOELECTRONICS GMBH & CO KG.

Patent filings in countries

World map showing SONCA IND LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 25
#2 Hong Kong 8
#3 United States 5
#4 Australia 1
#5 New Zealand 1

Patent filings per year

Chart showing SONCA IND LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chung Sze-Yuen 6
#2 Yue-Chun Cheng 4
#3 Wong Chung-Chee 3
#4 Li Eric Fook-Chuen 3
#5 Hui Yin 3
#6 Yeh Warner S 2
#7 Cheng Yue-Chun 2
#8 Yeh Warner Sheo-Yin 1
#9 Sze-Yuen Chung 1
#10 Shao Yin Yeh W 1

Latest patents

Publication Filing date Title
GB8604890D0 Battery charger
GB8416615D0 Electric lighting devices
HK45784A Improvements relating to lanterns
HK7384A Improvements in or relating to lanterns and flashlights
HK11483A Improvements relating to lanterns torches and other lights
GB8301537D0 Improvements relating to inverter circuits
GB2097465A Improvements in lanterns and other appliances having stands and/or carrying handles
GB2090396A Improvements relating to lanterns
US4403182A Dry-cell holders
GB2089104A Improvements relating to dry-cell holders
GB2039355A Interally illuminated switch for battery lamp
GB2026675A Lanterns and other lights
GB2028485A Improvements in or Relating to Lamp Brackets for Bicycles
GB2026674A Battery-operated lanterns
GB1591215A Inverter circuit for fluorescent lamps
GB1571564A Inverter circuit for fluorescent lamps
GB1570277A Fluorescent lamp arrangement
GB1273571A Improvements in or relating to hand torches
GB1207498A An improved illuminating and magnifying viewing device
GB1181832A Improvements in or relating to Hand Torches and Switches Therefor