Development of latent friction ridge prints

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9718294
APP PUB NO 20150133295A1
SERIAL NO

14401976

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Abstract

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Apparatus to produce a spatially and temporally uniform heat source is described and this is used to visualize latent fingerprints deposited onto thermal paper by raising the temperature of the paper. Results show an improvement over previous techniques, particularly when fingerprint deposits are aged or the developed fingerprints faint; visualization being enhanced by the use of an LED light source. An investigation of the components in fingerprint sweat likely to affect the solubility and hence colour change of the dye present in the thermal paper has shown that polar protic solvents able to donate a proton are favoured and a polar amino acid found commonly in eccrine fingerprint sweat (lysine) has been shown able to produce the desired colour change. Aged fingerprint deposits on thermal paper from a variety of sources up to four years old have been visualized with this technique.

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Patent Owner(s)

Patent OwnerAddress
CONSOLITE FORENSICS LIMITED10 ST ANN STREET SALISBURY WILTSHIRE SP1 2DN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bond, John Leicester Leicestershire, GB 11 146
Byrne, Kevin Zeals Wiltshire, GB 9 27
King, Christopher Sherbourne Dorset, GB 48 339
Lewis, Richard Shaftesbury Dorset, GB 81 1369
Price, James Salisbury Wiltshire, GB 32 1597
Rice, Nicholas Wincanton Somerset, GB 6 13

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