Inventor · disambiguated record
Les Johnson
Also filed as: JOHNSON LES
3 granted patents·70 citations·filing 1990–1999
73Inventor score
Top patents by PatentIndex Score
3 records- 0172US6815399B1Shear-sensitive plugging fluid for plugging and a method for plugging a subterranean formation zoneSCHLUMBERGER TECHNOLOGY CORP·Filed 1999·Granted Nov 9, 2004·40 cites·13 claims
- 0253US5199489AMethod of cementing well casing to avoid gas channelling from shallow gas-bearing formationsDOWELL SCHLUMBERGER INC·Filed 1990·Granted Apr 6, 1993·19 cites·5 claims
- 0347US5378816AMethods for high purity chromatographic separation of proteins having EGF-like binding domainsBERLEX LAB·Filed 1992·Granted Jan 3, 1995·11 cites·7 claims
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