Smart polymeric multilayer sensors

Communications: electrical – Watercraft alarm or indicating systems

Reexamination Certificate

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C250S227140, C340S603000

Reexamination Certificate

active

11056023

ABSTRACT:
Sensors suitable for submarine detection are in the form of multilayer polymer beads. The sensors have a change in detectible property, such as color, which occurs when said sensors are exposed to a particular stimulus such as an object or event to be detected. The change in property is thus detectible by an external monitor.

REFERENCES:
patent: 4812014 (1989-03-01), Sawano et al.
patent: 4846548 (1989-07-01), Klainer
patent: 4862146 (1989-08-01), McCoy et al.
patent: 5489536 (1996-02-01), Ekechukwu
patent: 6215231 (2001-04-01), Newnham et al.
“Coating Methods”, Kirk-Othner, Encyclopedia of Chemical Technology, vol. 3, 4th Edition, pp. 765-833, 1993.

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