Invention Grant
- Patent Title: Fingerprint powder
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Application No.: US15585490Application Date: 2017-05-03
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Publication No.: US10362971B1Publication Date: 2019-07-30
- Inventor: Paul Chambre
- Applicant: AIR SCIENCE USA LLC
- Applicant Address: US FL Fort Myers
- Assignee: AIR SCIENCE USA LLC
- Current Assignee: AIR SCIENCE USA LLC
- Current Assignee Address: US FL Fort Myers
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Main IPC: C08F122/32
- IPC: C08F122/32 ; C08J3/12 ; A61B5/1172 ; C09D5/03

Abstract:
Process for producing powdered polycyanoacrylate polymer by charging a reaction vessel with an aqueous mist, dripping a 2-cyanoacrylate into the reaction vessel, allowing the resulting reaction mass (polycyanoacrylate polymer) to cool, removing the polycyanoacrylate polymer from the reaction vessel, drying it, and pulverizing the dry solid into a powder. Powdered polycyanoacrylate polymer having a particle diameter in the range of from 1 to 200 microns. The particle size and shape herein contribute to uniform distribution of fumes during fingerprint capture. A high level of accuracy in fingerprint detection is provided among three distinct levels which include: (a) first level detection from ridge flow patterns such as whorl or loop; (b) second level detection from ridge flow singularities such as ridge endings and bifurcations; (c) and third level detection from pore configuration.
Information query
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