Inventor · disambiguated record
Stephen W. Bartholomew
Also filed as: BARTHOLOMEW STEPHEN W
11 granted patents·222 citations·filing 1986–2021
91Inventor score
Files withENSIGN BICKFORD CO5SHOCK TUBE SYSTEMS INC3ENSIGN BICKFORD AEROSPACE & DEFENSE COMPANY2DETOTEC NORTH AMERICA1
Top patents by PatentIndex Score
11 records- 0188US6272996B1In-line initiator and firing device assemblySHOCK TUBE SYSTEMS INC·Filed 1999·Granted Aug 14, 2001·63 cites·23 claims
- 0286US4742773ABlasting signal transmission tube delay unitENSIGN BICKFORD CO·Filed 1986·Granted May 10, 1988·42 cites·6 claims
- 0380US4771694ABlasting signal transmission tube connectorENSIGN BICKFORD CO·Filed 1986·Granted Sep 20, 1988·30 cites·20 claims
- 0480US4730560ACombination blasting signal transmission tube connector and delay assemblyENSIGN BICKFORD CO·Filed 1986·Granted Mar 15, 1988·30 cites·17 claims
- 0576US7086335B2Redundant signal transmission system and deployment meansSHOCK TUBE SYSTEMS INC·Filed 2003·Granted Aug 8, 2006·11 cites·12 claims
- 0675US7162957B2Redundant signal transmission system and development methodSHOCK TUBE SYSTEMS INC·Filed 2006·Granted Jan 16, 2007·3 cites·5 claims
- 0773US5012741AInitiator for a transmission tubeENSIGN BICKFORD CO·Filed 1990·Granted May 7, 1991·29 cites·4 claims
- 0872US9568294B2Signal encrypted digital detonator systemENSIGN-BICKFORD AEROSPACE & DEFENSE COMPANY·Filed 2014·Granted Feb 14, 2017·3 cites·18 claims
- 0954US9879964B1Signal encrypted digital detonator systemENSIGN-BICKFORD AEROSPACE & DEFENSE COMPANY·Filed 2017·Granted Jan 30, 2018·0 cites·10 claims
- 1046US4716831ADetonating cord connectorENSIGN BICKFORD CO·Filed 1986·Granted Jan 5, 1988·11 cites·17 claims
- 1138US11892277B2Non-electric initiator systemDETOTEC NORTH AMERICA·Filed 2021·Granted Feb 6, 2024·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →