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US 10,121,042 B2Granted
Fingerprint detection liquid
AssigneeKinsei Matec Co., Ltd.
InventorsKokichi Tani, Junya Fujioka
Life of this patent
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Abstract
A fingerprint detection liquid that makes it possible to recover clear fingerprints from wet objects and various other objects without adjustment of concentration and composition. The fingerprint detection liquid includes not only pigment particles and a silicone but also a cationic surfactant and an ionizing liquid that ionizes the cationic surfactant. The cationic surfactant preferably includes octyldimethylethylammonium ethylsulfate.
Claims7
A fingerprint detection liquid comprising:
- pigment particles;
- a silicone;
- a cationic surfactant;
- and
- an ionizing liquid that ionizes the cationic surfactant.
2 more elements
Dependencies are inferred from the claim text.