Canada-Cities Service, Ltd.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Canada-Cities Service, Ltd..The latest application filed is for "blending tar sands to provide feedstocks for hot water process".

Company Profile

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Canada-Cities Service, Ltd. - Calgary CA
Canada-Cities Service, Ltd. - Edmonton CA
Canada-Cities Service, Ltd. - Toronto CA
Canada-Cities Service, Ltd. - ALL OF CA
Canada-Cities Service, Ltd. - N/A
Canada Cities Service, Ltd. - Alberta CA
Canada-Cities Service, Ltd. - Calgari Alberta CA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Blending tar sands to provide feedstocks for hot water process Grant 4,474,616 - Smith , et al. October 2, 1	1984-10-02
Control of process aid used in hot water process for extraction of bitumen from tar sand Grant 4,462,892 - Schramm , et al. July 31, 1	1984-07-31
Dilution centrifuging of bitumen froth from the hot water process for tar sand Grant 4,383,914 - Kizior May 17, 1	1983-05-17
Non-ionic emulsifying release agent for bituminous sands conveyor belt Grant 4,197,937 - Sanford , et al. April 15, 1	1980-04-15
Process of treating bituminous sands conveyor belt with release agent Grant 4,172,811 - Sanford , et al. October 30, 1	1979-10-30
Process for secondary recovery of bitumen in hot water extraction of tar sand Grant 4,172,025 - Porteous , et al. October 23, 1	1979-10-23
Method for concentrating heavy minerals in the solids tailings from hot water extraction of tar sands Grant 4,150,093 - Kaminsky , et al. April 17, 1	1979-04-17
Bitumen-sodium hydroxide-water emulsion release agent for bituminous sands conveyor belt Grant 4,146,125 - Sanford , et al. March 27, 1	1979-03-27
Method for concentrating heavy minerals in the solids tailings from hot water extraction of tar sands Grant 4,138,467 - Kaminsky , et al. February 6, 1	1979-02-06
Treatment of tumbler reject Grant 4,131,535 - Porteous December 26, 1	1978-12-26
Deaerator circuit for bitumen froth Grant 4,116,809 - Kizior September 26, 1	1978-09-26
Dual control system for tailings outlet of primary separation vessel in the hot water process for bituminuous sands Grant 4,107,029 - Lorenz August 15, 1	1978-08-15
Method for reducing power loss associated with electrical heating of a subterranean formation Grant 4,010,799 - Kern , et al. March 8, 1	1977-03-08
Two stage separation system Grant 3,935,076 - Cymbalisty January 27, 1	1976-01-27
Treatment of middlings stream from hot water process for recovering bitumen from tar sand Grant 3,864,251 - Cymbalisty February 4, 1	1975-02-04
Process For Washing Secondary Separator Froth To Recover Bitumen Grant 3,784,464 - Kaminsky January 8, 1	1974-01-08
Preparation Of Mineral Free Asphaltenes Grant 3,779,902 - Mitchell , et al. December 18, 1	1973-12-18
Treatment Of Bituminous Sands For Recovery Of Heavy Metals Therefrom Grant 3,656,938 - Penzes April 18, 1	1972-04-18
Control Of Solids In Processing Bituminous Sand Grant 3,619,406 - Bowman , et al. November 9, 1	1971-11-09
Dehydration Of Bituminous Emulsion Grant 3,619,416 - Hendry November 9, 1	1971-11-09

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