For the Inventor, By the Inventor

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Calgary, Canada

Polar Completions Engineering, Inc.

USPTO Granted Patents = 3

Forward Citations = 135

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4 inventors (with patents filed for the assignee):

Piro T Shkurti (3 out of 4 patents)

Vitold P Serafin (3 out of 6 patents)

Barry Tate (2 out of 2 patents)

4. Darryl J Firmaniuk (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 6341653 - Junk basket and method of use (2002-01-29),

2. 6244642 - Retrievable bridge plug and retrieving tool (2001-06-12),

3. 6220348 - Retrievable bridge plug and retrieving tool (2001-04-24),

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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#291 in Calgary

#4,250 in Canada

Calgary, Canada

Polar Completions Engineering, Inc.

Forward Citations = 135

4 inventors:

Piro T Shkurti (3 out of 4 patents)

Vitold P Serafin (3 out of 6 patents)

Barry Tate (2 out of 2 patents)

4. Darryl J Firmaniuk (1 out of 1 patent)

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