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For the Inventor, By the Inventor

Gloucester, United Kingdom

Rockatek Limited


USPTO Granted Patents = 3


Forward Citations = 0

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3 inventors (with patents filed for the assignee):

goldMedal Daniel Brendan Crowley (3 out of 11 patents)

silverMedal Robert Donald John Sedgeman (3 out of 7 patents)

bronzeMedal Robert Sedgeman (1 patent)


3 patents:

1. 12497844 - High frequency torsional oscillation mitigation tool (2025-12-16),
2. 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),
3. 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 - Sep 22 2026

3 Patents

#22 in Gloucester

#4,881 in United Kingdom

Gloucester, GB
Gloucester, United Kingdom

Rockatek Limited

Forward Citations = 0

3 inventors:

goldMedal Daniel Brendan Crowley (3 out of 11 patents)

silverMedal Robert Donald John Sedgeman (3 out of 7 patents)

bronzeMedal Robert Sedgeman (1 patent)

Please report any incorrect information to [email protected]
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