Northern Illinois Gas Company

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR166

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5542287 Portable gas pressure monitor with independently adjustable high and low set pointsOct 17, 94Aug 06, 96[G01M]
5365977 Pipe sealDec 01, 93Nov 22, 94[F16L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5460071 Power driven casing splitter apparatusExpiredOct 18, 93Oct 24, 95[B26D, F16L]
5381136 Remote data collection and monitoring system for distribution lineExpiredMar 19, 93Jan 10, 95[G08B]
5321233 Electrofusion fitting and sealing method for distribution lineExpiredSep 15, 92Jun 14, 94[F16L, H05B]
5297584 Pipe sealExpiredMar 05, 92Mar 29, 94[F16L]
4839642 Data transmission system with data verificationExpiredOct 08, 87Jun 13, 89[H04Q]
4634859 Optical encoder with two photosensorsExpiredApr 02, 84Jan 06, 87[G01B, G01D]
4616193 High frequency transistor oscillator with discrete resonator elements for transponderExpiredJan 22, 85Oct 07, 86[H03B]
4366486 Low profile antenna for data transpondersExpiredMar 16, 81Dec 28, 82[H01Q]
4189925 Method of storing electric powerExpiredMay 08, 78Feb 26, 80[F01K]

Top Inventors for This Owner

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