For the Inventor, By the Inventor

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Warrington, United Kingdom

Esr Technology Limited

USPTO Granted Patents = 2

EPO Patents = 2

Forward Citations = 4

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6 inventors (with patents filed for the assignee):

David John Buttle (2 out of 12 patents)

William Dalzell (1 out of 4 patents)

Peter John Thayer (1 out of 3 patents)

4. Stephen Frank Burch (1 out of 1 patent)

5. Geoffrey Charles Eckold (1 out of 2 patents)

6. Grant Munro (0 patent)

2 patents: Sort by Forward Citations

1. 7268541 - Detecting failures of flexible multistrand steel structures (2007-09-11),

2. 7215117 - Measurement with a magnetic field (2007-05-08),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#15 in Warrington

#6,372 in United Kingdom

Warrington, United Kingdom

Esr Technology Limited

Forward Citations = 4

6 inventors:

David John Buttle (2 out of 12 patents)

William Dalzell (1 out of 4 patents)

Peter John Thayer (1 out of 3 patents)

4. Stephen Frank Burch (1 out of 1 patent)

5. Geoffrey Charles Eckold (1 out of 2 patents)

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