For the Inventor, By the Inventor

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Vsd Limited

USPTO Granted Patents = 3

Forward Citations = 57

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5 inventors (with patents filed for the assignee):

Edward Colby (2 out of 26 patents)

Michael John Black (2 out of 2 patents)

Ian Frederick Moore (1 out of 1 patent)

4. Robert Frederick Aird (1 out of 1 patent)

5. Henry Joseph Grech-Cini (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 7002478 - Smoke and flame detection (2006-02-21),

2. 6956485 - Fire detection algorithm (2005-10-18),

3. 6844818 - Smoke detection (2005-01-18),

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USPTO Data Jan 1 1976 - Dec 23 2025

3 Patents

#509 in

#4,783 in United Kingdom

Vsd Limited

Forward Citations = 57

5 inventors:

Edward Colby (2 out of 26 patents)

Michael John Black (2 out of 2 patents)

Ian Frederick Moore (1 out of 1 patent)

4. Robert Frederick Aird (1 out of 1 patent)

5. Henry Joseph Grech-Cini (1 out of 1 patent)

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