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HARMER & SIMMONS LTD

Overview
  • Total Patents
    18
About

HARMER & SIMMONS LTD has a total of 18 patent applications. Its first patent ever was published in 1963. It filed its patents most often in United Kingdom, Germany and France. Its main competitors in its focus markets electrical machinery and energy, control and environmental technology are ETHERDYNE TECH INC, HAIER GROUP TECHNOLOGY RANDD CT and LAUSDEO CORP.

Patent filings in countries

World map showing HARMER & SIMMONS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 13
#2 Germany 2
#3 France 2
#4 Italy 1

Patent filings per year

Chart showing HARMER & SIMMONS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Cook Frederick John 2
#2 Crowe John Edward 2
#3 Morling Michael Alan 2
#4 Rice David John 1
#5 Farrell Malcolm 1
#6 Morling Michael Allen 1
#7 Harmer Harold Martin 1
#8 Morrison Eric James William 1

Latest patents

Publication Filing date Title
GB9500065D0 Float temperature compensation system
GB8312685D0 Standby power supply system
GB8305569D0 Electric power supply apparatus
GB2105122A A DC voltage converter
GB2099635A Ransformers for battery charging systems
GB2088159A Battery charging apparatus
GB2086674A Battery charging apparatus
IT1030683B Battery charging control circuit - incorporating a timer and a voltage sensitive switch to permit further trickle charge
GB1456226A Battery chargers
DE2322225A1 PROCEDURE FOR AUTOMATIC CHARGING OF BATTERIES AND SWITCH ARRANGEMENTS FOR EXECUTING THE PROCEDURE
GB1428671A Automatic battery-charging
GB1329836A Charging of electrical storage batteries
GB1187312A Improvements relating to the Stabilisation of Electrical Power-Supply Systems
GB1036766A Improvements relating to time-delay devices in battery-charging apparatus