Inventor · disambiguated record
Francis Alexander Cumming
Also filed as: CUMMING FRANCIS ALEXANDER
3 granted patents·578 citations·filing 1998–1998
79Inventor score
Top patents by PatentIndex Score
3 records- 0196US6070671ACreating zonal isolation between the interior and exterior of a well systemSHELL OIL CO·Filed 1998·Granted Jun 6, 2000·408 cites·7 claims
- 0290US6078031AMethod and device for joining oilfield tubularsSHELL RES LTD·Filed 1998·Granted Jun 20, 2000·148 cites·7 claims
- 0343US6244337B1System for sealing the intersection between a primary and a branch boreholeSHELL OIL CO·Filed 1998·Granted Jun 12, 2001·22 cites·6 claims
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