Kris J. Nygaard
11Patents
8h-index
18Co-inventors
69Inventor score
Filing activity: Dec 5, 1990 → Nov 18, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6543538B2 | Method for treating multiple wellbore intervals | Fixed Constructions | 332 | Expired |
| US6394184B2 | Method and apparatus for stimulation of multiple formation intervals | Fixed Constructions | 247 | Expired |
| US6520255B2 | Method and apparatus for stimulation of multiple formation intervals | Fixed Constructions | 114 | Expired |
| US7059407B2 | Method and apparatus for stimulation of multiple formation intervals | Fixed Constructions | 83 | Expired |
| US6672405B2 | Perforating gun assembly for use in multi-stage stimulation operations | Fixed Constructions | 63 | Expired |
| US6957701B2 | Method and apparatus for stimulation of multiple formation intervals | Fixed Constructions | 55 | Expired |
| US5040560A | Method and apparatus for controlled modification of fluid flow | Emerging Cross-Sectional Technologies | 35 | Expired |
| US8490685B2 | Method and apparatus associated with stimulation treatments for wells | Fixed Constructions | 27 | Active |
| US9963960B2 | Systems and methods for stimulating a multi-zone subterranean formation | Fixed Constructions | 3 | Active |
| US9945218B2 | Sytems and methods for re-completing multi-zone wells | Fixed Constructions | 2 | Active |
| US9765592B2 | Systems and methods for secondary sealing of a perforation within a wellbore casing | Fixed Constructions | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.