For the Inventor, By the Inventor

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Edmonton, Canada

Pica Pipeline Inspection and Condition Analysis Corporation

USPTO Granted Patents = 1

CIPO Patents = 2

Trademarks = 2

Forward Citations = 0

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2 inventors (with patents filed for the assignee):

David E Russell (1 out of 4 patents)

David Burton (1 out of 1 patent)

Rodney K Ridley (10 patents)

4. Yuwu Yu (4 patents)

5. Lawrence B Staples (2 patents)

6. Gordon R Brandly (2 patents)

7. M Douglas Maclean (0 patent)

8. Jens Cb Winslow (0 patent)

9. Varagur Sv Rajan (0 patent)

1 patent: Sort by Forward Citations

1. 11549912 - Collapsible pipeline inspection tool (2023-01-10),

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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#233 in Edmonton

#9,164 in Canada

Edmonton, Canada

Pica Pipeline Inspection and Condition Analysis Corporation

Forward Citations = 0

2 inventors:

David E Russell (1 out of 4 patents)

David Burton (1 out of 1 patent)

Rodney K Ridley (10 patents)

4. Yuwu Yu (4 patents)

5. Lawrence B Staples (2 patents)

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