Darrin L. Willauer
23Patents
13h-index
43Co-inventors
81Inventor score
Filing activity: Oct 7, 1993 → Oct 5, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6012526A | Method for sealing the junctions in multilateral wells | Fixed Constructions | 97 | Expired |
| US7828055B2 | Apparatus and method for controlled deployment of shape-conforming materials | Fixed Constructions | 76 | Active |
| US5350018A | Well treating system with pressure readout at surface and method | Fixed Constructions | 50 | Expired |
| US6896056B2 | System and methods for detecting casing collars | Fixed Constructions | 46 | Expired |
| US7743835B2 | Compositions containing shape-conforming materials and nanoparticles that absorb energy to heat the compositions | Emerging Cross-Sectional Technologies | 37 | Active |
| US5743333A | External casing packer with element end sleeve to collar retainer and method | Fixed Constructions | 34 | Expired |
| US6600127B1 | Method and apparatus for direct electrothermal-physical conversion of ceramic into nanopowder | Emerging Cross-Sectional Technologies | 20 | Expired |
| US7820097B2 | Electrical, plating and catalytic uses of metal nanomaterial compositions | Emerging Cross-Sectional Technologies | 19 | Active |
| US6367545B1 | Electronically controlled electric wireline setting tool | Fixed Constructions | 19 | Expired |
| US6050336A | Method and apparatus to isolate a specific zone | Fixed Constructions | 17 | Expired |
| US6580051B2 | Method and apparatus for producing bulk quantities of nano-sized materials by electrothermal gun synthesis | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6050131A | Method for verifying positive inflation of an inflatable element | Fixed Constructions | 15 | Expired |
| US7832490B2 | Compositions containing shape-conforming materials and nanoparticles to enhance elastic modulus | Emerging Cross-Sectional Technologies | 15 | Active |
| US6289994A | Bidirectional temperature and pressure effect compensator for inflatable elements | Fixed Constructions | 8 | Expired |
| US6540019B2 | Intelligent thru tubing bridge plug with downhole instrumentation | Fixed Constructions | 6 | Expired |
| US7891430B2 | Water control device using electromagnetics | Fixed Constructions | 6 | Active |
| US8857342B2 | NANO-enhanced kinetic energy particles | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US9494068B2 | Electrical plating and catalytic uses of metal nanomaterial compositions | Emerging Cross-Sectional Technologies | 5 | Active |
| US7565928B2 | Downhole abrading tool having a taggant injection assembly for indicating excessive wear | Fixed Constructions | 2 | Active |
| US8505294B2 | Method and system for control of hydraulic systems | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US10233726B2 | Pressure differential device with constant pressure drop | Fixed Constructions | 0 | Active |
| US9907183B2 | Electrical, plating and catalytic uses of metal nanomaterial compositions | Electricity | 0 | Active |
| US8857454B2 | Valving system and method of selectively halting injection of chemicals | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.