Metal oxide nanoparticles for smoke clearing and fire...

Hazardous or toxic waste destruction or containment – Processes for making harmful chemical substances harmless,... – By reacting with chemical agents

Reexamination Certificate

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C588S315000, C588S316000, C588S318000, C588S413000, C588S414000, C169S044000, C169S045000, C169S046000, C169S071000, C169S077000, C422S028000, C252S004000, C252S005000, C252S008000, C252S008050

Reexamination Certificate

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11252943

ABSTRACT:
Methods of reducing smoke levels in smoke-affected areas, reducing the level of toxic compounds produced by fires, fire suppression, and increasing flame retardancy. In particular, methods according to the present invention comprise dispersing nanocrystalline particles in the areas affected by smoke for sorption of smoke particulates and toxic compounds produced from a fire. The nanocrystalline particles are also effective for use in methods of fire suppression and flame retardancy.

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Fastact (“Chemical Hazard Containment and Neutralization System” Technical Report, prepared by NanoScale Materials, INc., Publication date Mar. 2004.
Article entitled: “Armed Forces” found in Fire Chief (Every Department, Every Leader, by Bret Lanz et al. Publication Date Nov. 1, 2003.
Building & Fire Research Laboratory, Activities, Accomplishments & Recognitions, National Institute of Standards and Technology, pp. 37-38 (2003).
Tuovinen, Heimo et al., Modelling of hydrogen cyanide formation in room fires, Fire Safety Journal 39 (2004), pp. 737-755 (2004).
Hertzberg, Tommy et al., Particles from Fires—a screening of common materials found in buildings, Fire and Materials 2003, vol. 27, pp. 295-314.
Blomqvist, Per et al., Isocyanates, aminoisocyanates and amines from fires—a screening of common materials found in buildings, Fire and Materials 2003, vol. 27, pp. 275-294.

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