1
James E Batz: Data transmission system including an RF transponder for generating a broad spectrum of intelligence bearing sidebands. Northern Illinois Gas Company, Johnson Dienner Emrich & Wagner, June 29, 1976: US03967202 (194 worldwide citation)

A data transmission system for obtaining information from a plurality of data sources includes an interrogate source for transmitting RF interrogate signals to the locations of the data sources and a transponder associated with each data source for receiving the interrogate signals and for generatin ...


2
Batz James E: Remote meter reading system. Northern Illinois Gas Company, December 5, 1972: US3705385 (143 worldwide citation)

A system for selectively obtaining information from a plurality of remotely located data registers including a mobile or stationary transmitter for transmitting coded signals representing the identification number of a register to be read and a transponder at each register location for receiving the ...


3
James E Batz: Frequency/space diversity data transmission system. Northern Illinois Gas Company, Emrich Root O Keeffe & Lee, March 28, 1978: US04081748 (102 worldwide citation)

A frequency/space diversity data transmission system includes a transmitter for transmitting two or more distinct RF signals having the same modulation from different antennas separated a wavelength or more, the frequency spacing of the carrier signals being at least ten times greater than the frequ ...


4
George Long: Method of storing electric power. Northern Illinois Gas Company, Hume Clement Brinks Willian & Olds, February 26, 1980: US04189925 (101 worldwide citation)

A method for storing electric power and later utilizing the stored power is described which includes the steps of converting the electric power to chemical energy of molecular hydrogen, reacting the hydrogen with a source of carbon to produce a hydrocarbon compound such as methane or methanol, stori ...


5
Robert D Powers, Harold L Ryterski: Remote data collection and monitoring system for distribution line. Northern Illinois Gas Company, Emrich & Dithmar, January 10, 1995: US05381136 (64 worldwide citation)

A remote logger unit monitors various operating parameters of a distribution line, or transmission system, such as pressure, temperature and flow such as for natural gas, water or oil, and alerts a central controller via an RF link when predetermined operating limits as determined by the logger unit ...


6
Walter Simciak: RF data exchange system. Northern Illinois Gas Company, Johnson Dienner Emrich & Wagner, June 21, 1977: US04031513 (63 worldwide citation)

An improved remote meter reading system is disclosed comprising apparatus for transmitting UHF AM interrogating signals from an interrogating mobile or central station to a remote transponder station, and apparatus for retransmitting UHF FM data signals from the energized transponder to the mobile o ...


7
James E Batz, Dennis J Martell, Steven A Overmyer: Data transmission system with data verification. Northern Illinois Gas Company, Emrich & Dithmar, June 13, 1989: US04839642 (44 worldwide citation)

A system for selectively obtaining information from a plurality of remotely located data indicating devices includes an interrogate source and a plurality of transponders each associated with a different one of the data indicating devices. The interrogate source transmits an interrogate signal for e ...


8
Dufour Raymond J, Grimm James J: Internal pipe sealing device. Northern Illinois Gas Company, October 24, 1972: US3700265 (34 worldwide citation)

The sealing device is composed of an inner expandable retainer member and an outer elastic sealing member. The inner retainer member in the unexpanded position has a cylindrical sleeve configuration with its end portions in an overlapping arrangement. One of these end portions has two locking groove ...


9
Martell Dennis J: Apparatus for cumulatively storing and remotely reading a meter. Northern Illinois Gas Company, Clement Howard W, Berenzweig Jack C, January 15, 1974: US3786423 (32 worldwide citation)

There is disclosed a method and an apparatus for remotely reading one or more meters containing information which are located in a station remote from a central location. The apparatus comprises a means for producing a plurality of information signals indicative of the information being registered o ...


10
George Long, Dennis J Martell, James E Batz: Remote data readout system for transmitting digital data over existing electrical power lines. Northern Illinois Gas Company, Johnson Dienner Emrich & Wagner, August 2, 1977: US04040046 (31 worldwide citation)

A system for providing remote readout of a plurality of groups of data indicating devices including a control unit for each group of data indicating devices for receiving interrogate data signals transmitted over a communication line or RF signal link from an interrogate unit at a central location t ...