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For the Inventor, By the Inventor

Northumberland, United Kingdom

Pii Limited


USPTO Granted Patents = 12

% Expired Patents = 33.3



Trademarks = 7

Forward Citations = 133

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18 inventors (with patents filed for the assignee):

goldMedal David Martin Paige (4 out of 4 patents)

silverMedal Paul Arthur Mundell (3 out of 3 patents)

bronzeMedal Christopher Envy (3 out of 3 patents)

4.  Peter Allan Couchman (3 out of 3 patents)

5.  Michael Gibson (2 out of 2 patents)

6.  Robert Andrew Mercel (2 out of 2 patents)

7.  Jeffrey Earle Sutherland (1 out of 6 patents)

8.  Thomas James Batzinger (1 out of 54 patents)

9.  Ian D Smith (1 out of 34 patents)

10.  Ruediger Bauernschmitt (1 out of 1 patent)

11.  Achim Hugger (1 out of 1 patent)

12.  Derek R Smith (1 out of 1 patent)

13.  Eduardo Boada (1 out of 1 patent)

14.  Gary Brayson (1 out of 1 patent)

15.  Peter Houldey (1 out of 1 patent)


12 patents:

1. 9404903 - Method for pipeline inspection (2016-08-02),
2. 8487610 - Magnetising assembly (2013-07-16),
3. 8373411 - Sensor system for an in-line inspection tool (2013-02-12),
4. 8291780 - Sensor finger module for a pipeline inspection tool (2012-10-23),
5. 8264219 - In-line pipe inspection tool (2012-09-11),
6. 8201454 - Pipeline inspection apparatus and method (2012-06-19),
7. 7784368 - In-line pipe inspection tool (2010-08-31),
8. 7458289 - Sensor system for an pipeline inspection tool (2008-12-02),
9. 7406873 - Electromagnetic acoustic transducer (2008-08-05),
10. 7024935 - Electromagnetic acoustic transducers (2006-04-11),
11. 6538431 - Pipeline pigs (2003-03-25),
12. 6098231 - Pipeline pigs (2000-08-08),
Company Overview
Pii Limited is a technology company based in Northumberland, UK, specializing in advanced software solutions and innovative product development. The organization focuses on creating cutting-edge applications that enhance operational efficiency and drive digital transformation across various industries. With a commitment to research and development, Pii Limited explores emerging technologies to deliver tailored solutions that meet the evolving needs of its clients, positioning itself as a leader in the tech landscape.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

12 Patents

#1 in Northumberland

#1,457 in United Kingdom

#48,129 in the World

Northumberland, GB
Northumberland, United Kingdom

Pii Limited

Forward Citations = 133

18 inventors:

goldMedal David Martin Paige (4 out of 4 patents)

silverMedal Paul Arthur Mundell (3 out of 3 patents)

bronzeMedal Christopher Envy (3 out of 3 patents)

4.  Peter Allan Couchman (3 out of 3 patents)

5.  Michael Gibson (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pii Limited. Retrieved from https://idiyas.com/company/pii

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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