US Patent 6857428 Custom fitted mask and method of forming same

According to one embodiment of the invention, a method of forming a custom fitted mask includes transitioning a mask blank including a thin sheet of deformable material from a non-deformable state into a deformable state. The mask blank is applied against at least a portion of a user's face surrounding the user's nostrils while the mask blank is in the deformable state. The mask blank is deformed against the portion of the user's face to cause the mask blank to conform substantially optimally to the user's unique bone structure and facial features, the mask blank once conformed substantially optimally to the user's unique bone structure and facial features becoming the custom fitted mask. The custom fitted mask is allowed to transition from the deformable state into the non-deformable state for use.