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SIGMA LTD

Overview
  • Total Patents
    15
About

SIGMA LTD has a total of 15 patent applications. Its first patent ever was published in 1979. It filed its patents most often in United Kingdom, United States and Germany. Its main competitors in its focus markets measurement and basic communication technologies are TWIN CITY INT INC, TERRA ETABLISSEMENT and GII ACQUISITION LLC DBA GENERA.

Patent filings in countries

World map showing SIGMA LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 11
#2 United States 2
#3 Germany 1
#4 EPO (European Patent Office) 1

Patent filings per year

Chart showing SIGMA LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Measurement
#2 Basic communication technologies

Top inventors

# Name Total Patents
#1 Ireland Eric 4
#2 Wall Barrie 2
#3 O'Brien Rory Morgan 2
#4 Zaremba Zbigniew 2
#5 Hicks Peter A R 1
#6 Mcbeath John 1
#7 Smith Graham 1
#8 O'Brien Rory M 1
#9 Hicks Peter Adrian Roy 1
#10 Sowerby James Mcgregor 1

Latest patents

Publication Filing date Title
GB9014792D0 Compensation apparatus and method
GB9004863D0 Optical projection lens system
GB8725473D0 Gauging apparatus
GB8719422D0 Inductive proximity sensor
GB8600926D0 Position sensor
GB8529394D0 Component inspection apparatus
GB8430398D0 Component measuring apparatus
GB8403414D0 Component measuring instrument
GB8331471D0 Measurement apparatus
GB8303961D0 Component measuring instrument
GB2065399A Determining a dimensional parameter of a workpiece