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TitleDateType
1 Ambient froth flotation process for the recovery of bitumen from tar sand1984-01-10Text
2 Apparatus for extracting bitumen from tar sand1982-01-19Text
3 Apparatus for the treatment of tar sand froth1976-07-06Text
4 Arrangement for recovering viscous petroleum from thick tar sand1977-05-03Text
5 Bitumen recovery from tar sands1984-09-11Text
6 Coking contaminated oil shale or tar sand oil on retorted solid fines1985-03-26Text
7 Coking poor coking coals and hydrocracked tar sand bitumen binder1980-11-18Text
8 Combination solvent-noncondensible gas injection method for recovering petroleum from viscous petroleum-containing formations including tar sand deposits1978-08-29Text
9 Combined surface and in situ tar sand bitumen production1985-02-19Text
10 Completion for tar sand substrateText
11 Control of process aid used in hot water process for extraction of bitumen from tar sand1984-07-31Text
12 Double solvent extraction of organic constituents from tar sands1977-09-06Text
13 Flotation method and apparatus for recovering crude oil from tar-sand1982-04-13Text
14 In situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range2004-06-15
15 In situ thermal processing of a coal formation using a controlled heating rate2004-06-15
16 Method and apparatus for on-line monitoring of bitumen content in tar sand1984-02-21Text
17 Method and apparatus for producing tar sand deposits containing conductive layers1991-08-27Text
18 Method and apparatus for producing tar sand deposits containing conductive layers having little or no vertical communication1991-10-29Text
19 Method and apparatus for recovering viscous petroleum from tar sand1981-02-03Text
20 Method and apparatus for recovering viscous petroleum from thick tar sand1978-10-17Text
21 Method and apparatus for sampling a core of tar sand1983-02-08Text
22 Method and apparatus for the solvent extraction of oil from bitumen containing tar sand1996-07-09Text
23 Method and appratus for extracting tar sand1983-11-22Text
24 Method for controlling flocculant addition to tar sand tailings1981-07-04Text
25 Method for controlling sand in thermal recovery of oil from tar sands1978-09-19Text
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