David Ward
15Patents
7h-index
17Co-inventors
63Inventor score
Filing activity: Jul 2, 1993 → Sep 17, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6578638B2 | Drillable inflatable packer & methods of use | Fixed Constructions | 85 | Expired |
| US6082707A | Valve seat and method | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US5320219A | Compact disc identification kit | Physics | 32 | Expired |
| US8245788B2 | Cluster opening sleeves for wellbore treatment and method of use | Fixed Constructions | 31 | Active |
| US9523261B2 | High flow rate multi array stimulation system | Fixed Constructions | 15 | Active |
| US8714272B2 | Cluster opening sleeves for wellbore | Fixed Constructions | 11 | Active |
| US8087459B2 | Packer providing multiple seals and having swellable element isolatable from the wellbore | Fixed Constructions | 7 | Active |
| US8893810B2 | Arrangement of isolation sleeve and cluster sleeves having pressure chambers | Fixed Constructions | 5 | Active |
| US8069918B2 | Magnetic slip retention for downhole tool | Fixed Constructions | 5 | Active |
| US9488035B2 | Sliding sleeve having deformable ball seat | Emerging Cross-Sectional Technologies | 4 | Active |
| US6059262A | Valve operator and method | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US8800670B2 | Filler rings for swellable packers and method for using same | Emerging Cross-Sectional Technologies | 2 | Active |
| US9995113B2 | Method and apparatus for treating a wellbore | Fixed Constructions | 1 | Active |
| US9080420B2 | Multiple shift sliding sleeve | Fixed Constructions | 1 | Active |
| US9670751B2 | Sliding sleeve having retrievable ball seat | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.