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For the Inventor, By the Inventor

Gloucester, United Kingdom

Rockatek Limited


USPTO Granted Patents = 2


Forward Citations = 0

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2 inventors (with patents filed for the assignee):

goldMedal Daniel Brendan Crowley (2 out of 10 patents)

silverMedal Robert Donald John Sedgeman (2 out of 6 patents)


2 patents:

1. 12345157 - Piston and cylinder assembly of a downhole tool, downhole tool with a piston and cylinder assembly, and method of assembling the piston and cylinder (2025-07-01),
2. 11993985 - Downhole assembly to mitigate high frequency torsional oscillation, and oscillation mitigation tool suitable for use in a downhole assembly (2024-05-28),
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USPTO Data Jan 1 1976 - Dec 9 2025

2 Patents

#25 in Gloucester

#6,367 in United Kingdom

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Gloucester, United Kingdom

Rockatek Limited

Forward Citations = 0

2 inventors:

goldMedal Daniel Brendan Crowley (2 out of 10 patents)

silverMedal Robert Donald John Sedgeman (2 out of 6 patents)

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