Petro-Canada Exploration, Inc.
22Patents
0Active
22Granted
32Portfolio score
Filing activity: Sep 15, 1975 → Dec 13, 1983
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4084637A | Method of producing viscous materials from subterranean formations | Fixed Constructions | 351 | Expired |
| US4010799A | Method for reducing power loss associated with electrical heating of a subterranean formation | Fixed Constructions | 295 | Expired |
| US4514305A | Azeotropic dehydration process for treating bituminous froth | Chemistry; Metallurgy | 78 | Expired |
| US4146125A | Bitumen-sodium hydroxide-water emulsion release agent for bituminous sands conveyor belt | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4383914A | Dilution centrifuging of bitumen froth from the hot water process for tar sand | Chemistry; Metallurgy | 30 | Expired |
| US4456536A | Skimmer apparatus for recovering bitumen | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4474616A | Blending tar sands to provide feedstocks for hot water process | Chemistry; Metallurgy | 21 | Expired |
| US4225433A | Filtration of hot water extraction process whole tailings | Performing Operations; Transporting | 21 | Expired |
| US4433239A | Method and apparatus for on-line monitoring of bitumen content in tar sand | Physics | 20 | Expired |
| US4172025A | Process for secondary recovery of bitumen in hot water extraction of tar sand | Chemistry; Metallurgy | 19 | Expired |
| US4282103A | Method for controlling flocculant addition to tar sand tailings | Chemistry; Metallurgy | 19 | Expired |
| US4197937A | Non-ionic emulsifying release agent for bituminous sands conveyor belt | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4084639A | Electrode well for electrically heating a subterranean formation | Fixed Constructions | 16 | Expired |
| US4372174A | Method and apparatus for sampling a core of tar sand | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4284360A | Homogenizer/subsampler for tar sand process streams | Performing Operations; Transporting | 14 | Expired |
| US4225422A | Beneficiation of heavy minerals from bituminous sands residues by dry screening | Chemistry; Metallurgy | 12 | Expired |
| US4489828A | Device for splicing cable ends | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4172811A | Process of treating bituminous sands conveyor belt with release agent | Chemistry; Metallurgy | 9 | Expired |
| US4462892A | Control of process aid used in hot water process for extraction of bitumen from tar sand | Chemistry; Metallurgy | 8 | Expired |
| US4201656A | Process aid addition in hot water process based on feed fines content | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4328710A | Homogenizer/subsampler for tar sand process streams | Performing Operations; Transporting | 3 | Expired |
| US4082646A | Coking of bituminous solids with hot solids recycle | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.