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NORTHERN ILLINOIS GAS CO

Overview
  • Total Patents
    78
About

NORTHERN ILLINOIS GAS CO has a total of 78 patent applications. Its first patent ever was published in 1955. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets environmental technology, basic communication technologies and measurement are WATTLES CYRA BISSELL, MARCH ADRIAN RES LTD and MACH TOOL AUTOMATION INC.

Patent filings per year

Chart showing NORTHERN ILLINOIS GAS COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Batz James E 11
#2 Martell Dennis J 9
#3 Goad Robert L 5
#4 Marotta Ronald G 5
#5 Batz J 4
#6 Batz J E 4
#7 Dufour Raymond J 3
#8 Grimm James J 3
#9 Long George 3
#10 Martell D J 2

Latest patents

Publication Filing date Title
US5542287A Portable gas pressure monitor with independently adjustable high and low set points
EP0695905A1 Electrofusion fitting and sealing method for distribution line
US5460071A Power driven casing splitter apparatus
US5381136A Remote data collection and monitoring system for distribution line
US5297584A Pipe seal
US4839642A Data transmission system with data verification
CA1268227A Data transmission system with data verification
CA1262269A Optical encoder with two photosensors
CA1279111C High frequency oscillator with discrete frequency determining elements
US4616193A High frequency transistor oscillator with discrete resonator elements for transponder
US4634859A Optical encoder with two photosensors
US4366486A Low profile antenna for data transponders
US4081748A Frequency/space diversity data transmission system
US4040046A Remote data readout system for transmitting digital data over existing electrical power lines
US4031513A RF data exchange system
US3919640A Simultaneous analog and digital data transfer
US3967202A Data transmission system including an RF transponder for generating a broad spectrum of intelligence bearing sidebands
CA997839A Cathodic condition remote monitoring system
US3893130A Recorder pen
CA940064A Internal pipe sealing system