TerraTek, Inc.
23Patents
6Active
23Granted
38Portfolio score
Filing activity: Jul 6, 1976 → May 29, 2009 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4384613A | Method of in-situ retorting of carbonaceous material for recovery of organic liquids and gases | Fixed Constructions | 300 | Expired |
| US4547468A | Hollow proppants and a process for their manufacture | Chemistry; Metallurgy | 121 | Expired |
| US4198953A | Solar illuminated energy conserving greenhouse | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4634315A | Forced refreezing method for the formation of high strength ice structures | Fixed Constructions | 36 | Expired |
| US4198870A | Constant point of load application fracture specimen loading machine | Physics | 28 | Expired |
| US4241796A | Active drill stabilizer assembly | Fixed Constructions | 25 | Expired |
| US4044828A | Process for direct measurement of the orientation of hydraulic fractures | Fixed Constructions | 20 | Expired |
| US8234912B2 | Apparatus for continuous measurement of heterogeneity of geomaterials | Physics | 20 | Active |
| US4679441A | Pressure balanced loading piston for triaxial test cells | Physics | 19 | Expired |
| US8200465B2 | Heterogeneous earth models for a reservoir field | Physics | 15 | Active |
| US4182215A | Failsafe hydraulic prestressing nut | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4299120A | Method for determining plane strain fracture toughness of non-elastic fracture mechanics specimens | Physics | 14 | Expired |
| US7983885B2 | Method and apparatus for multi-dimensional data analysis to identify rock heterogeneity | Physics | 13 | Active |
| US4152941A | Process for measuring the fracture toughness of rock under simulated down-hole stress conditions | Physics | 11 | Expired |
| US4116049A | Method for measuring plane strain fracture toughness | Physics | 11 | Expired |
| US8347959B2 | Method and system for increasing production of a reservoir | Fixed Constructions | 8 | Active |
| US4462617A | High pressure rotary coupling | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4075884A | Fracture specimen loading machine | Physics | 6 | Expired |
| US4630868A | Process for solution mining | Fixed Constructions | 6 | Expired |
| US8646526B2 | Method and system for increasing production of a reservoir using lateral wells | Fixed Constructions | 5 | Active |
| US4289036A | Gauge for measuring the mouth opening displacement of fracture toughness test specimens | Physics | 5 | Expired |
| US4637217A | Rapid construction of ice structures with chemically treated sea water | Fixed Constructions | 4 | Expired |
| US7926588B2 | Optimizing drilling performance using a selected drilling fluid | Fixed Constructions | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.