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IC:A62B23/02 AND EN_ALLTXT:(coronavirus OR coronaviruses OR coronaviridae OR coronavirinae OR orthocoronavirus OR orthocoronaviruses OR orthocoronaviridae OR orthocoronavirinae OR betacoronavirus OR betacoronaviruses OR betacoronaviridae OR betacoronavirinae OR sarbecovirus OR sarbecoviruses OR sarbecoviridae OR sarbecovirinae OR "severe acute respiratory syndrome" OR sars OR "2019 ncov" OR covid)

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Analysis

1.WO/2008/145175BREATHING MEANS
WO 04.12.2008
Int.Class A62B 23/02
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
23Filters for breathing-protection purposes
02for respirators
Appl.No PCT/EP2007/055138 Applicant NM TECH NANOMATERIALS MICRODEVICE TECHNOLOGY LTD. Inventor DELLA VALLE, Renato Ambrogio
A Breathing device (10; 30; 50; 60; 80) comprises mask means (11; 31; 61; 81) suitable for being applied to a face of a user, connecting means (12, 14, 16, 17; 32, 32a, 34, 36) protruding form said mask means (11; 31; 61; 81) and arranged for keeping said mask means (11; 31; 61; 81) in contact whit said face, said mask means (11; 31; 61; 81) being provided with purifying means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51; 61, 69; 90, 91, 92) arranged for purifying a stream of air passing through said purifying means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51; 61, 69; 90, 91, 92) , and it is characterised in that said purifying means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51; 61, 69; 90, 91, 92) is provided with a nanomaterial product comprising a compound having the general formula AOx- (L-Men+)i; filtering means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51, 55; 61, 69; 90, 91, 92) for a breathing device 10; 30; 50; 60; 80) provided with purifying means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51; 61, 69; 90, 91, 92) containing a nanomaterial product comprising a compound having the general formula AOx- (L-Men+)i, in which AOx is a metal or metalloid oxide in which x indicates the number of the Oxygen atom(s) (O) bound to the metal (A) atom; Men+ is a metal ion; L is a bifunctional molecule that could bind both metal oxide or metalloid oxide (AOx) and the metal ion (Men+) , and i is a parameter indicating the number of (L-Men+) groups bound to the metal oxide AOx.
2.WO/2016/101848PROTECTIVE MASKS WITH COATING COMPRISING DIFFERENT ELECTROSPUN FIBERS INTERWEAVED WITH EACH OTHER, FORMULATIONS FORMING THE SAME, AND METHOD OF PRODUCING THEREOF
WO 30.06.2016
Int.Class B01D 39/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
Appl.No PCT/CN2015/097936 Applicant PROFIT ROYAL PHARMACEUTICAL LIMITED Inventor TONG, Ho Wang
A protective mask comprises an ultrafine fibrous coating comprising partially gelled submicron fibers interweaved with nanofibers and a biocide encapsulated in, surface-attached onto, blended with, physically trapped, and/or chemically linked to said submicron fibers and nanofibers. In an example, a microfibrous substrate with the coating assembles with other microfibrous substrates to form a protective mask having N95 level of protection and bacteria-killing capability.
3.20190231004MASK
US 01.08.2019
Int.Class A41D 13/11
AHUMAN NECESSITIES
41WEARING APPAREL
DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
13Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
05protecting only a particular body part
11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
Appl.No 16332472 Applicant NBC MESHTEC INC. Inventor Tetsuya SATO

A mask having an inner surface facing a wearer and an outer surface located opposite to the inner surface has first to fourth filters. The first filter is disposed on the outer surface of the mask and has air permeability and a water absorption capacity of 100% or more and less than 1000%. The second filter is layered on the first filter on the side of the inner surface of the mask and has air permeability and a water absorption capacity of less than 30%. The third filter is layered on the second filter on the side of the inner surface of the mask and is formed of an electret filter having air permeability and a water absorption capacity of less than 50%. The fourth filter is disposed on the inner surface of the mask and has air permeability.

4.2020100449Replaceable filter medical mask with recovery device
AU 09.04.2020
Int.Class A41D 13/11
AHUMAN NECESSITIES
41WEARING APPAREL
DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
13Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
05protecting only a particular body part
11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
Appl.No 2020100449 Applicant LIU, QINGQI MR Inventor
5.20050079379Enhancement of barrier fabrics with breathable films and of face masks and filters with novel fluorochemical electret reinforcing treatment
US 14.04.2005
Int.Class A62B 7/10
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
7Respiratory apparatus
10with filter elements
Appl.No 10915808 Applicant University of Tennessee Research Foundation Inventor Wadsworth Larry C.

A respirable one-ply, two-ply or multi-ply barrier fabric including one web comprising an electrostatically charged melt blown fibers nonwoven or a nanofiber/melt blown fibers nonwoven having a weak cationic emulsifier to reduce surface energy of the fibers so as to minimize penetration and wetting by oily mists and to thereby preserve the effectiveness of electrostatic charges applied to fibers. Also disclosed is a two-layer or multi-ply barrier fabric which has at least one barrier fabric layer which is impermeable to liquids such as water and body fluids, but which allows the transport of moisture vapor through the micropores or by chemical absorption of water through a monolithic membrane, which may have additional barrier layers to include melt blown and nanofiber/melt blown composites. One or more layers of the respirable barrier fabric or the moisture transporting microporous (MP) or monolithic (ML) films or combination thereof may contain an antimicrobial agent, fluorochemical or other protective finish, as well as any of the layers of the respirable filter fabric or any of the layers of the filter ensemble as well as any layer of the liquid barrier moisture transporting barrierfabrics. Furthermore, the protective fabrics may contain a porous or absorbent fabric or film on the body side for enhanced thermal comfort, and other additives may be included in the fabric ensembles such as activated carbon particles, or activated carbon particles, or other sorbents, or superabsorbents o to absorb odors or toxic chemicals.

6.20100269832Complex respirator
US 28.10.2010
Int.Class A62B 23/02
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
23Filters for breathing-protection purposes
02for respirators
Appl.No 11503075 Applicant Lin Jing-Jyr Inventor Lin Jing-Jyr

A complex respirator is provided that includes a first shell, at least a first filter layer and a second filter layer. The first filter layer is replaceable and arranged on an outer side of the first shell while the first shell is disposed on an outer side of the second filter layer. A slot is formed on an outer side of the first shell for accommodating the first filter layer. The filtering area of the first filter layer is smaller than that of the second filter layer while pore size of the first filter layer is larger than that of the second filter layer. The second filter layer filters the gas that the first filter layer is unable to filter. Moreover, the type of first filter media of the first filter layer may be chosen based on the location that the complex respirator is to be used.

7.20150289573SELF SANITIZING FACE MASKS AND METHOD OF MANUFACTURE
US 15.10.2015
Int.Class A41D 13/11
AHUMAN NECESSITIES
41WEARING APPAREL
DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
13Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
05protecting only a particular body part
11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
Appl.No 14751695 Applicant Marci B. Haas Inventor Marci B. Haas

A reusable facemask includes a filter layer of material adapted to trap particles having a size range of known contaminant particles; and a porous layer of material located adjacent to the filter layer and adapted to continually sanitize contaminant particles trapped by the filter layer and contaminant particles passing through the porous layer by releasing free ions of elements selected from the group consisting of silver and copper.

8.20050194010Disposable contagion transmission prevention device and method of using a disposable contagion transmission prevention device
US 08.09.2005
Int.Class A62B 18/08
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
18Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes
08Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
Appl.No 10793012 Applicant SANKOT PHILIP W. Inventor Sankot Philip W.

A disposable personal contagion transmission prevention device for preventing transmission of airborne contagions may include a device body having an exterior and interior surface and shaped so as to provide a sealing fit over the bridge of a user's nose, extending downward along the cheek lines beneath the user's chin so as to sealingly enclose a user's mouth and nose within an interior cavity formed by the device body over the face. The device body may also include a bulbous protrusion that is contiguous with the device body and extends outward from the device body to provide a handhold for facilitating the placing of the device body over and against the nose bridge, cheeks and chin of the user. The interior surface of the device body with bulbous protrusion may include an absorbent fibrous material that entrains fluids and particulate that may be forcefully expelled from the user.

9.20070095348PARTICULATE BLOCKING OXYGEN DELIVERY MASK
US 03.05.2007
Int.Class A62B 23/00
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
23Filters for breathing-protection purposes
Appl.No 11461291 Applicant FISHER JOSEPH Inventor Fisher Joseph

A particulate blocking oxygen delivery mask includes a face piece constructed at least partially of a filtering material, a securing member such as a strap attached to the face piece, and an gas entry port disposed on the face piece. The gas entry port may include an optional one-way valve. The mask may be coupled to a continuous flow of oxygen or may be used as a partial or non-rebreathing mask. The mask permits the administration of high concentrations of oxygen to the patient while at the same time isolating the patient from any potentially contagious airborne particles in their surroundings. It also isolates any potentially contagious droplets or aerosolized particulate matter exhaled by a patient from entering the environment and potentially infecting others.

10.WO/2012/151204BREATHING APPARATUS WITH ULTRAVIOLET LIGHT EMITTING DIODE
WO 08.11.2012
Int.Class A62B 18/08
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
18Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes
08Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
Appl.No PCT/US2012/035988 Applicant ZHOU, Ling Inventor ZHOU, Ling
A breathing apparatus according to embodiments of the invention includes a facemask portion sized to cover a lower portion of a wearer's face. The facemask portion includes a flow chamber defined by a support layer and a cover. The flow chamber has a first opening disposed near a first end of the flow chamber and a second opening disposed near a second end of the flow chamber. At least one light emitting diode configured to emit light having a peak wavelength in the ultraviolet range is disposed between the first opening and the second opening in the flow chamber.