Michael Wardley
28Patents
8h-index
20Co-inventors
75Inventor score
Filing activity: Nov 30, 1984 → Feb 13, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6062326A | Casing shoe with cutting means | Fixed Constructions | 135 | Expired |
| US6443247B1 | Casing drilling shoe | Fixed Constructions | 133 | Expired |
| US4679639A | Rotary drill bits and cutting elements for such bits | Fixed Constructions | 64 | Expired |
| US4942933A | Relating to rotary drill bits | Fixed Constructions | 40 | Expired |
| US4848491A | Rotary drill bits | Fixed Constructions | 36 | Expired |
| US4699227A | Method of forming cutting structures for rotary drill bits | Chemistry; Metallurgy | 19 | Expired |
| US4705122A | Cutter assemblies for rotary drill bits | Performing Operations; Transporting | 13 | Expired |
| US10329877B2 | Downhole tool and method | Fixed Constructions | 11 | Active |
| US4781256A | Cutting structures for rotary drill bits | Chemistry; Metallurgy | 7 | Expired |
| US7703523B2 | Apparatus and method for use in a well bore | Fixed Constructions | 7 | Expired |
| US9222328B2 | Wellhead latch and removal systems | Fixed Constructions | 6 | Active |
| US7866391B2 | Shoe for wellbore lining tubing | Fixed Constructions | 4 | Active |
| US7686089B2 | Hanging apparatus and method | Fixed Constructions | 2 | Expired |
| US10989017B2 | Method of abandoning a well | Fixed Constructions | 1 | Active |
| US11078754B2 | Downhole test tool and method of use | Fixed Constructions | 1 | Active |
| US11125036B2 | Downhole anchor mechanism | Fixed Constructions | 1 | Active |
| US11613953B2 | Well abandonment and slot recovery | Fixed Constructions | 1 | Active |
| US9580969B2 | Cutting assembly suitable for use on a drillable drill bit | Emerging Cross-Sectional Technologies | 1 | Active |
| US11466530B2 | Or relating to well abandonment and slot recovery | Fixed Constructions | 0 | Active |
| US11840900B2 | Well abandonment and slot recovery | Fixed Constructions | 0 | Active |
| US11840899B2 | Well abandonment and slot recovery | Fixed Constructions | 0 | Active |
| US11156049B2 | Well abandonment | Fixed Constructions | 0 | Active |
| US11428061B2 | Downhole cut and pull tool and method of use | Fixed Constructions | 0 | Active |
| US12163389B2 | Relating to well abandonment and slot recovery | Fixed Constructions | 0 | Active |
| US11512560B2 | Downhole tool | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.