For the Inventor, By the Inventor

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Her Majesty the Queen in Right of the Province of Alberta, Government of

USPTO Granted Patents = 21

Forward Citations = 305

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22 inventors (with patents filed for the assignee):

Lubomyr M Cymbalisty (4 out of 7 patents)

Emerson Sanford (4 out of 4 patents)

Robert Shaw (3 out of 3 patents)

4. Lloyd W Trevoy (3 out of 3 patents)

5. Alvin Maskwa (3 out of 3 patents)

6. Kenneth Porteous (2 out of 3 patents)

7. Thaddeus E Kizior (2 out of 3 patents)

8. Victor Kaminsky (2 out of 2 patents)

9. Joseph K Liu (2 out of 2 patents)

10. Robert C Shaw (2 out of 3 patents)

11. Gordon Ronald Lorenz (1 out of 1 patent)

12. Stanley McQuitty (1 out of 1 patent)

13. John Filby (1 out of 1 patent)

14. Peter Charles Flynn (1 out of 1 patent)

15. William Lavender (1 out of 1 patent)

21 patents: Sort by Forward Citations

1. 4456536 - Skimmer apparatus for recovering bitumen (1984-06-26),

2. 4372174 - Method and apparatus for sampling a core of tar sand (1983-02-08),

3. 4328710 - Homogenizer/subsampler for tar sand process streams (1982-05-11),

4. 4284360 - Homogenizer/subsampler for tar sand process streams (1981-08-18),

5. 4282103 - Method for controlling flocculant addition to tar sand tailings (1981-08-04),

6. 4225433 - Filtration of hot water extraction process whole tailings (1980-09-30),

7. 4225422 - Beneficiation of heavy minerals from bituminous sands residues by dry (1980-09-30),

8. 4201656 - Process aid addition in hot water process based on feed fines content (1980-05-06),

9. 4197937 - Non-ionic emulsifying release agent for bituminous sands conveyor belt (1980-04-15),

10. 4172811 - Process of treating bituminous sands conveyor belt with release agent (1979-10-30),

11. 4172025 - Process for secondary recovery of bitumen in hot water extraction of tar (1979-10-23),

12. 4150093 - Method for concentrating heavy minerals in the solids tailings from hot (1979-04-17),

13. 4146125 - Bitumen-sodium hydroxide-water emulsion release agent for bituminous (1979-03-27),

14. 4138467 - Method for concentrating heavy minerals in the solids tailings from hot (1979-02-06),

15. 4131535 - Treatment of tumbler reject (1978-12-26),

The Government of Alberta, under the leadership of Her Majesty the Queen in Right of the Province of Alberta, is responsible for the administration and governance of the province. As the highest authority in Alberta, the government oversees various departments and agencies to ensure the well-being and prosperity of its residents. Visit the website for more information on services, programs, and initiatives.

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USPTO Data Jan 1 1976 - Dec 16 2025

21 Patents

#56 in undefined, undefined

#133 in

#15,162 in US

#29,053 in the World

Her Majesty the Queen in Right of the Province of Alberta, Government of

Forward Citations = 305

22 inventors:

Lubomyr M Cymbalisty (4 out of 7 patents)

Emerson Sanford (4 out of 4 patents)

Robert Shaw (3 out of 3 patents)

4. Lloyd W Trevoy (3 out of 3 patents)

5. Alvin Maskwa (3 out of 3 patents)

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