For the Inventor, By the Inventor

Enter assignee name

Canada-cities Service, Ltd.

USPTO Granted Patents = 28

Forward Citations = 678

Loading Chart...

Loading Chart...

29 inventors (with patents filed for the assignee):

Lubomyr M Cymbalisty (5 out of 7 patents)

Emerson Sanford (4 out of 4 patents)

Kenneth Porteous (3 out of 3 patents)

4. Thaddeus E Kizior (3 out of 3 patents)

5. Robert Shaw (3 out of 3 patents)

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

7. Alvin Maskwa (3 out of 3 patents)

8. Laurier L Schramm (2 out of 4 patents)

9. Russell G Smith (2 out of 3 patents)

10. Victor Kaminsky (2 out of 2 patents)

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

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

13. Thomas K Perkins (1 out of 34 patents)

14. Loyd R Kern (1 out of 1 patent)

15. Leigh Falkenberg (1 out of 1 patent)

28 patents: Sort by Forward Citations

1. 4489828 - Device for splicing cable ends (1984-12-25),

2. 4474616 - Blending tar sands to provide feedstocks for hot water process (1984-10-02),

3. 4462892 - Control of process aid used in hot water process for extraction of (1984-07-31),

4. 4456536 - Skimmer apparatus for recovering bitumen (1984-06-26),

5. 4383914 - Dilution centrifuging of bitumen froth from the hot water process for (1983-05-17),

6. 4372174 - Method and apparatus for sampling a core of tar sand (1983-02-08),

7. 4328710 - Homogenizer/subsampler for tar sand process streams (1982-05-11),

8. 4284360 - Homogenizer/subsampler for tar sand process streams (1981-08-18),

9. 4282103 - Method for controlling flocculant addition to tar sand tailings (1981-08-04),

10. 4225433 - Filtration of hot water extraction process whole tailings (1980-09-30),

11. 4225422 - Beneficiation of heavy minerals from bituminous sands residues by dry (1980-09-30),

12. 4201656 - Process aid addition in hot water process based on feed fines content (1980-05-06),

13. 4197937 - Non-ionic emulsifying release agent for bituminous sands conveyor belt (1980-04-15),

14. 4172811 - Process of treating bituminous sands conveyor belt with release agent (1979-10-30),

15. 4172025 - Process for secondary recovery of bitumen in hot water extraction of tar (1979-10-23),

Canada-cities Service, Ltd. is a leading provider of city planning and development services in Canada. We specialize in assisting municipalities and urban communities with efficient infrastructure management, sustainable growth strategies, and enhanced quality of life for residents and businesses. Our team of experienced professionals offers a comprehensive range of solutions, including urban design, transportation planning, environmental assessments, and public engagement services. We are dedicated to creating vibrant, inclusive, and resilient cities that thrive economically and socially. Visit our website to learn more about our company and how we can help transform your community.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

28 Patents

#1 in ALL OF

#744 in Canada

#22,547 in the World

Canada-cities Service, Ltd.

Forward Citations = 678

29 inventors:

Lubomyr M Cymbalisty (5 out of 7 patents)

Emerson Sanford (4 out of 4 patents)

Kenneth Porteous (3 out of 3 patents)

4. Thaddeus E Kizior (3 out of 3 patents)

5. Robert Shaw (3 out of 3 patents)

Please report any incorrect information to support@idiyas.com

Loading…