Daniel Jon Themig
66Patents
21h-index
22Co-inventors
88Inventor score
Filing activity: Aug 21, 1989 → Jul 6, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6907936B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 178 | Expired |
| US7108067B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 134 | Expired |
| US4942925A | Liner isolation and well completion system | Fixed Constructions | 107 | Expired |
| US7134505B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 92 | Expired |
| US8397820B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 87 | Active |
| US6244340A | Self-locating reentry system for downhole well completions | Fixed Constructions | 74 | Expired |
| US7431091B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 74 | Expired |
| US7798226B2 | Cement diffuser for annulus cementing | Fixed Constructions | 65 | Active |
| US7571765B2 | Hydraulic open hole packer | Fixed Constructions | 63 | Active |
| US7543634B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 62 | Active |
| US8033331B2 | Cement diffuser for annulus cementing | Fixed Constructions | 62 | Active |
| US7748460B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 61 | Active |
| US7832472B2 | Hydraulic open hole packer | Fixed Constructions | 59 | Active |
| US7021384B2 | Apparatus and method for wellbore isolation | Fixed Constructions | 47 | Expired |
| US7861774B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 46 | Active |
| US5117913A | Chemical injection system for downhole treating | Emerging Cross-Sectional Technologies | 37 | Expired |
| US8757273B2 | Downhole sub with hydraulically actuable sleeve valve | Emerging Cross-Sectional Technologies | 34 | Active |
| US9121255B2 | Stage tool for wellbore cementing | Fixed Constructions | 32 | Active |
| US8167047B2 | Method and apparatus for wellbore fluid treatment | Fixed Constructions | 31 | Active |
| US9140097B2 | Wellbore treatment apparatus and method | Fixed Constructions | 29 | Active |
| US7353878B2 | Apparatus and method for wellbore isolation | Fixed Constructions | 29 | Expired |
| US9765595B2 | Wellbore actuators, treatment strings and methods | Fixed Constructions | 20 | Active |
| US9644459B2 | Wellbore lateral liner placement system | Fixed Constructions | 17 | Active |
| US9010447B2 | Sliding sleeve sub and method and apparatus for wellbore fluid treatment | Fixed Constructions | 17 | Active |
| US9187994B2 | Wellbore frac tool with inflow control | Fixed Constructions | 16 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.