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TitleDateType
1 Completion for tar sand substrateText
2 Control of process aid used in hot water process for extraction of bitumen from tar sand1984-07-31Text
3 Combined surface and in situ tar sand bitumen production1985-02-19Text
4 Coking contaminated oil shale or tar sand oil on retorted solid fines1985-03-26Text
5 Ambient froth flotation process for the recovery of bitumen from tar sand1984-01-10Text
6 Apparatus for the treatment of tar sand froth1976-07-06Text
7 Apparatus for extracting bitumen from tar sand1982-01-19Text
8 Production of bitumen from a tar sand formation1976-05-25
9 Recovering viscous petroleum from thick tar sand1976-11-30
10 Recovering hydrocarbons from tar sand or heavy oil reservoirs1994-06-07
11 Recovery of heavy crude oil or tar sand oil or bitumen from underground formations1992-09-08
12 Recovery of bitumen from tar sand1981-02-10
13 Recovery of heavy crude oil or tar sand oil or bitumen from underground formations1989-07-11
14 Recycle of secondary froth in the hot water process for extracting bitumen from tar sand1988-10-11
15 Recovery of petroleum from viscous asphaltic petroleum containing formations including tar sand deposits1977-08-16
16 Separation of bitumen from dry tar sands1978-10-17
17 Separation of solids from tar sands extract1978-06-13
18 Solvent extraction of tar sand1979-02-13
19 Simultaneous upgrading of tar sand bitumen and coal by corefining1988-08-16
20 Solvent extraction process for recovering bitumen from tar sand1987-06-30
21 Double solvent extraction of organic constituents from tar sands1977-09-06Text
22 System for handling the underflow from a primary separation vessel in the tar sand hot water process1978-08-08
23 System for recovering viscous petroleum from thick tar sand1977-04-26
24 Supercritical tar sand extraction1982-07-27
25 Tar sand processing apparatus1976-04-20
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