Title | Date | Type | ||
---|---|---|---|---|
26 |
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Method of recovery of bitumen from tar sand formations | 1977-01-18 | Text |
27 |
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Method of reducing moisture and solid content of bitumen extracted from tar sand minerals | 2000-02-01 | Text |
28 |
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Method of removing bitumen from tar sand for subsequent recovery of the bitumen | 1977-10-18 | Text |
29 |
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Method of removing bitumen from tar sand utilizing ultrasonic energy and stirring | 1977-10-18 | Text |
30 |
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Method of separating bitumen from tar sand with cold solvent | 1976-11-23 | Text |
31 |
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Methods of tar sand bitumen recovery | 1992-09-01 | Text |
32 |
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Monitoring surfactant content to control hot water process for tar sand | 1991-04-23 | Text |
33 |
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Multiple drain method for recovering oil from tar sand | 2001-07-24 | Text |
34 |
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Use of a submersible viscometer in the primary separation step of the hot water process for recovery of bitumen from tar sand | 1987-01-20 | Text |