Gas separation: processes – Solid sorption
Reexamination Certificate
1999-06-24
2001-02-20
Spitzer, Robert H. (Department: 1724)
Gas separation: processes
Solid sorption
C095S116000, C095S285000, C096S135000, C096S142000, C096S154000, C096S226000, C055S485000, C055S486000, C055S524000, C210S501000
Reexamination Certificate
active
06190437
ABSTRACT:
FIELD OF THE INVENTION
The present invention provides a novel air filter for effectively providing purified air. The air filter of the present invention is particularly effective in the removal of bacteria, fungi and viruses from the air.
BACKGROUND
The progress of the industrialized world has not come without consequence. In recent decades, there has been a global increase in the incidence of disease, as well as a rapid deterioration in the health of our environment. As we approach the 21
st
century, many of us look for ways to control the quality of the environment in which we live, including the air we breath, the water we drink and the nutritional value of our food.
The quality of the air we breath is particularly concerning, as we require a continual source of oxygen to ensure our survival. For the most part, we are unaware of the potential dangers of the air we breath because some of the most harmful substances we encounter are in the form of colourless, odourless gases and microscopic organisms and particulate.
correlation with the demand for improved air quality in homes, offices and institutions worldwide, many air purification devices have appeared in the global marketplace. However, the limitation of such devices has been in both the removal and neutralization of viruses, fungi and bacteria from the air. Thus, there appears to be an unmet demand for an air filter with improved purification capabilities, particularly with respect to the removal of viruses, fungi and bacteria from the air. In addition, there is a need for such an improved air filter which effectively attenuates the viruses, fungi and bacteria with which it comes into contact, so as to provide an air filter which is easily and safely discarded after use. Further still, there is increasing demand for such a filter which is economically feasible for general use in homes and offices.
SUMMARY OF THE INVENTION
The present invention is directed to a novel air filter for effectively providing purified air. The present invention is particularly effective in removing bacteria, fungi and viruses from the air.
In accordance with one aspect of the present invention there is provided an air filter for use in purifying air of bacteria, fungi and viruses; said air filter comprised of a carrier substrate impregnated with iodine resins. No proprietary right is claimed in a single substrate impregnated with an iodinated resin.
In accordance with another aspect of the present invention there is provided a multi-layered air filter for use in purifying air of a variety of contaminants, said air filter comprised of a particulate immobilizing medium; an iodinated resin substrate; and a zeolite composite medium.
In accordance with another aspect of the present invention there is provided an air purification unit for insertion in an air flow system, comprised of a housing having an air inlet and an air outlet; and a multi-layered air filter proximate said air outlet; wherein said multi-layered air filter includes a particulate immobilizing medium, an iodinated resin substrate and a zeolite composite medium.
In accordance with a further aspect of the present invention there is provided an air purification system comprised of a housing having an air inlet and an air outlet; an air intake means in connection with said housing for drawing air into said air inlet and subsequently forcing air to exit said housing at said air outlet; and a multi-layered air filter proximate said air outlet; wherein said multi-layered air filter includes a particulate immobilizing medium, an iodinated resin substrate and a zeolite composite medium.
In accordance with yet another aspect of the present invention there is provided a method of removing viruses, fungi and bacteria from air; said method comprising of passing contaminated air through an iodinated resin substrate, wherein iodine resins are impregnated into a permeable carrier substrate.
In accordance with yet a further aspect of the present invention there is provided a method of purifying air, said method comprising of passing contaminated air through a filter unit; wherein said filter unit includes a particulate immobilizing medium; an iodinated resin substrate; and a zeolite composite medium.
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Aria Pureair Ltd.
Spitzer Robert H.
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