SCHLUMBERGER LTD.
11Patents
0Active
11Granted
33Portfolio score
Filing activity: May 6, 1975 → Dec 13, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5914673A | System for utility meter communications using a single RF frequency | Electricity | 95 | Expired |
| US4745562A | Signal processing disparity resolution | Physics | 59 | Expired |
| US4314339A | Method of generating subsurface characteristics models | Physics | 25 | Expired |
| USD427625S | Type font | General | 18 | Expired |
| US4314338A | Method of generating subsurface characteristic models | Physics | 17 | Expired |
| US4313164A | Method of generating subsurface characteristic models | Physics | 14 | Expired |
| US4312040A | Well log depth aligning | Physics | 12 | Expired |
| US4327412A | Well logging data processing technique | Physics | 8 | Expired |
| US3973188A | Method and apparatus for the determination of the thickness of a mudcake layer on a borehole wall traversing a subsurface earth formation | Physics | 6 | Expired |
| US5815558A | Dial inbound meter interface unit which uses two elements for coupling to and isolating from meter | Electricity | 2 | Expired |
| US7026720B2 | Flip-chip mounted integrated circuit card element | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.