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PARKINSON & COWAN LTD

Overview
  • Total Patents
    27
About

PARKINSON & COWAN LTD has a total of 27 patent applications. Its first patent ever was published in 1952. It filed its patents most often in United Kingdom, France and Switzerland. Its main competitors in its focus markets measurement, thermal processes and control are GEORGE WILSON GAS METERS LTD, ERNEST WILLIAM SMITH and BEGWACO METERS LTD.

Patent filings in countries

World map showing PARKINSON & COWAN LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 21
#2 France 3
#3 Switzerland 2
#4 United States 1

Patent filings per year

Chart showing PARKINSON & COWAN LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Alexander Arthur 9
#2 Obrist Anthony Jack 2
#3 Selden Otto Carl 2
#4 Archibald Lusk 2
#5 Hermann Richard 1
#6 Bailey Norman James 1
#7 Kirby George James 1
#8 Leonard Lewis Martin 1
#9 George William Randle 1
#10 Elwell-Smith Ronald 1

Latest patents

Publication Filing date Title
GB808323A Improvements in or relating to burners for gas cookers
GB790251A Improvements relating to vitreous enamelled box-like structures
GB789130A Support for gas meter
CH326509A Washing machine with drain line for emptying the washing container
US2760506A Domestic washing machines
GB805532A Improvements in or relating to meters
GB800181A Improvements in and relating to counting mechanism
GB801195A Improvements in and relating to counting mechanism
GB797829A Improvements in and relating to counting mechanism
GB782170A Improvements in or relating to coin mechanisms for gas or electricity meters
GB788856A Improvements in or relating to one-way friction clutches
GB804461A Improvements in or relating to sealing means for oven doors and the like
GB759543A Improvements in or connected with gas meters
GB797072A Coin freed mechanism for prepayment gas and electricity meters
GB780574A Improvements in or relating to gas meters
GB736444A Improvements in or relating to thermostatically controlled valves for gas and other fluids
GB730903A Improvements relating to dry gas meters
GB743070A Improvements relating to dry gas meters
GB743072A Improvements in dry gas meters
GB743071A Improvements in dry gas meters