Philip Head
72Patents
20h-index
11Co-inventors
85Inventor score
Filing activity: Aug 6, 1992 → Jun 9, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5709269A | Dissolvable grip or seal arrangement | Fixed Constructions | 131 | Expired |
| US5918677A | Method of and apparatus for installing the casing in a well | Fixed Constructions | 131 | Expired |
| US6223823A | Method of and apparatus for installing casing in a well | Fixed Constructions | 87 | Expired |
| US5435351A | Anchored wavey conduit in coiled tubing | Electricity | 87 | Expired |
| US5673751A | System for controlling the flow of fluid in an oil well | Emerging Cross-Sectional Technologies | 83 | Expired |
| US6557642B2 | Submersible pumps | Fixed Constructions | 63 | Expired |
| US5671811A | Tube assembly for servicing a well head and having an inner coil tubing injected into an outer coiled tubing | Fixed Constructions | 53 | Expired |
| US6276456A | Riser system for sub-sea wells and method of operation | Fixed Constructions | 44 | Expired |
| US5778981A | Device for suspending a sub sea oil well riser | Fixed Constructions | 39 | Expired |
| US6659201B2 | Method and apparatus for directional actuation | Fixed Constructions | 38 | Expired |
| US5327962A | Well packer | Fixed Constructions | 38 | Expired |
| US5340626A | Well packer | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6042303A | Riser system for sub sea wells and method of operation | Fixed Constructions | 28 | Expired |
| US7114970B2 | Electrical conducting system | Fixed Constructions | 27 | Expired |
| US5996689A | Conduit and continuous coiled tubing system | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US6323420A | Sub sea and sub surface tubing and conductors | Electricity | 25 | Expired |
| US6629570B1 | Method of downhole drilling and apparatus therefor | Fixed Constructions | 25 | Expired |
| US7730937B2 | Electric submersible pump and motor assembly | Mechanical Engineering; Lighting; Heating | 24 | Active |
| US5404945A | Device for controlling the flow of fluid in an oil well | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6161619A | Riser system for sub-sea wells and method of operation | Fixed Constructions | 23 | Expired |
| US8950476B2 | Coiled tubing deployed ESP | Mechanical Engineering; Lighting; Heating | 19 | Active |
| US7537055B2 | Method and apparatus for forming a window in a casing using a biasing arm | Fixed Constructions | 18 | Expired |
| US5441119A | Directional drilling tool | Fixed Constructions | 17 | Expired |
| US7378769B2 | Electric motors for powering downhole tools | Electricity | 17 | Expired |
| US6223671A | Mooring system | Performing Operations; Transporting | 17 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.