David W. McDougall

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for recovering elemental sulphur
- Patent number 5,047,216
- Issue date Sep 10, 1991
- Delta Projects Inc.
- David W. McDougall
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Diluent substitution apparatus
- Patent number 4,994,149
- Issue date Feb 19, 1991
- Delta Projects Inc.
- Jeffery E. Scott
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Diluent substitution process
- Patent number 4,882,041
- Issue date Nov 21, 1989
- Delta Projects Inc.
- Jeffery E. Scott
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Diluent distillation process and apparatus
- Patent number 4,661,242
- Issue date Apr 28, 1987
- Delta Projects Inc.
- Jeffery E. Scott
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...