For the Inventor, By the Inventor

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Aberdeen, United Kingdom

Renovus Limited

USPTO Granted Patents = 2

EPO Patents = 1

Forward Citations = 119

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3 inventors (with patents filed for the assignee):

Richard Alvin Armell (1 out of 11 patents)

Giancarlo Pietro Tomasso Pia (1 out of 1 patent)

Giancarlo Tomasso Pia (1 out of 2 patents)

4. Giancarlo Tomasso Pietro Pia (1 patent)

2 patents: Sort by Forward Citations

1. 7789156 - Flapper valve for use in downhole applications (2010-09-07),

2. 5890540 - Downhole tool (1999-04-06),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#72 in Aberdeen

#6,376 in United Kingdom

Aberdeen, United Kingdom

Renovus Limited

Forward Citations = 119

3 inventors:

Richard Alvin Armell (1 out of 11 patents)

Giancarlo Pietro Tomasso Pia (1 out of 1 patent)

Giancarlo Tomasso Pia (1 out of 2 patents)

4. Giancarlo Tomasso Pietro Pia (1 patent)

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