Assignee
COLUMBIA GAS OF OHIO INC
US·7 granted patents·237 citations·filing 1992–1996
Top patents by PatentIndex Score
7 records- 0191US5361636AApparatus and process for measuring the magnitude of leaksCOLUMBIA GAS OF OHIO INC·Filed 1992·Granted Nov 8, 1994·88 cites·20 claims
- 0279US5533362AHeat transfer apparatus for heat pumpsCOLUMBIA GAS OF OHIO INC·Filed 1994·Granted Jul 9, 1996·33 cites·20 claims
- 0370US5546760AGenerator for absorption heat pumpsCOLUMBIA GAS OF OHIO INC·Filed 1995·Granted Aug 20, 1996·32 cites·14 claims
- 0462US5645348AMethod and apparatus for measuring pressure in a pipeline without tappingCOLUMBIA GAS OF OHIO INC·Filed 1994·Granted Jul 8, 1997·21 cites·3 claims
- 0560US5836693AMethod and apparatus for measuring pressure in a pipeline without tappingCOLUMBIA GAS OF OHIO INC·Filed 1996·Granted Nov 17, 1998·24 cites·4 claims
- 0652US5769033AHot water storageCOLUMBIA GAS OF OHIO INC·Filed 1996·Granted Jun 23, 1998·20 cites·21 claims
- 0742US5412989AAcoustic tracing of buried conduitsCOLUMBIA GAS OF OHIO INC·Filed 1992·Granted May 9, 1995·19 cites·26 claims
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