WO2017121767A1 - Method and device for decontaminating a confined space - Google Patents

Method and device for decontaminating a confined space Download PDF

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Publication number
WO2017121767A1
WO2017121767A1 PCT/EP2017/050501 EP2017050501W WO2017121767A1 WO 2017121767 A1 WO2017121767 A1 WO 2017121767A1 EP 2017050501 W EP2017050501 W EP 2017050501W WO 2017121767 A1 WO2017121767 A1 WO 2017121767A1
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WO
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Application
Patent type
Prior art keywords
ozone
space
confined space
door
device
Prior art date
Application number
PCT/EP2017/050501
Other languages
French (fr)
Inventor
Philippe SAROUL
Original Assignee
Saroul Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/20Gaseous substances, e.g. vapours
    • A61L2/202Ozone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/015Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12Apparatus, e.g. holders, therefor
    • A61L9/122Apparatus, e.g. holders, therefor comprising a fan
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10Apparatus features
    • A61L2202/14Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L2202/00Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20Targets to be treated
    • A61L2202/25Rooms in buildings, passenger compartments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L2209/00Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10Apparatus features
    • A61L2209/11Apparatus for controlling air treatment
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L2209/00Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20Method-related aspects
    • A61L2209/21Use of chemical compounds for treating air or the like
    • A61L2209/212Use of ozone, e.g. generated by UV radiation or electrical discharge

Abstract

The invention relates to a method and device for decontaminating a confined space defined by at least one door, in particular a vehicle. In said method: ozone is generated in closed circuit from the oxygen present in said confined space, and the ozone generated in this manner is distributed within said confined space in order to decontaminate it after each closing of the door and for a predefined duration.

Description

DECONTAMINATION METHOD AND DEVICE FOR CONFINED SPACE

The present invention relates to the decontamination of confined spaces, including vehicles, eg refrigerated transport and / or perishable goods, such as food or flowers and / or contaminated materials.

Confined spaces are conducive to accumulating bacteria, viruses, and other infectious germs. These harmful elements multiply very quickly. It is therefore essential to regularly decontaminated confined spaces, including inside vehicles for the transport of perishable goods could be affected by such elements.

Application US 2008/0159910 discloses a method for safeguarding the goods transported in a vehicle, using ozone generated from oxygen taken from outside the vehicle. This method does not provide for the disinfection of the vehicle interior to remove bacteria, viruses and other germs.

The application US 2012/020830 describes a method of sterilizing a confined space where an ozone generator is placed. The generator produces ozone at a predetermined concentration, maintained for a certain duration after which the ozone is depleted, and increases the humidity of the confined space. A signal is produced when the ozone concentration reaches a safe level.

US application 2009/311138 discloses a sterilizing apparatus of a passenger cabin configured for adding ozone to the space of the cabin, this circulating ozone through the booth, and then discharged outside by an exhaust 22.

Application US 2005/123436 discloses an ozone generator where an ambient air inlet is provided to concentrate the oxygen to transform into ozone.

There is therefore a need for a decontamination device and sanitation of a confined space, which act effectively and quickly, and which is inexpensive, yet safe for personnel involved in the transport or handling objects present in this space.

In particular, such a device must be able to be installed easily on a refrigerated vehicle and be compact.

The present invention thus provides, according to one aspect, a method for decontaminating an enclosed space bounded by at least one door, in particular a vehicle, wherein: - the ozone is generated in a closed circuit from the oxygen present in said confined space, and

- ozone thus generated is distributed within said enclosed space to decontaminate after each closing of the door and for a predefined period.

The ozone generated according to the invention and powerfully oxidizing disinfectant, is used to delete more than 99.9% viruses, bacteria and other infectious agents present in the confined space. The invention also eliminates odors caused by the proliferation of bacteria. A clean and healthy smell emerges when the treated area.

The invention allows using the oxygen inside the volume to be disinfected and not outside, not to change the ambient air constitution filling the confined space, which is advantageous when the air is cooled by a cooling unit because it avoids introducing hot air, to meet the standards ATP (Agreement on the Transport of Perishable products) prohibiting any outside air inlet.

Ozone released into the confined space turns back naturally and quickly into oxygen, having decontaminated it, in minutes, without leaving any residue.

To decontaminate the confined space, no external supply is needed, such non-natural chemicals, because it is the oxygen in the confined space and power highly disinfectant ozone that are used only. Unlike other disinfection techniques, the use of ozone according to the invention does not require storage of dangerous goods since, is produced directly on site and only when it is needed as a direct result of its instability.

The invention also relates to a device for decontaminating an enclosed space bounded by at least a door, in particular a vehicle, comprising at least:

- an ozone generator configured to generate ozone in a closed circuit from the oxygen present in said space, and

- a diffuser configured to distribute the ozone thus generated in said confined space to decontaminate after each closing of the door and for a predefined duration. The ozone diffusion time can be set according to a parameter dependent on at least the volume of the space to be decontaminated. Over the confined space, the greater the diffusion time is preferably long. This can also depend on the power of the generator used to generate ozone. Decontamination of the confined space according to the invention would thus not be carried out continuously, but is controlled by an adjustable time delay, depending on the power of the ozone generator and the volume of the space to be decontaminated.

The ozone diffusion time can be between 1 and 50 minutes, more preferably between 5 and 30 minutes.

When the preset broadcast time has elapsed, the device stops because the enclosure defining the space being substantially sealed, there is no need to decontaminate, by cons, if the door is opened, a new risk of contamination occurs, and the device according to the invention will restart when the door is closed.

The diffused ozone dosage is preferably based on the power of the generator used to generate ozone and the volume of the space to be decontaminated. The dosage of ozone broadcast can also be a function of the internal temperature and / or air density.

The distribution of ozone can be triggered automatically after each closing of the door of the space to be decontaminated. No human intervention is required as well.

Alternatively, the diffusion of ozone is triggered by pressing a trigger switch located especially near the door of the confined space.

Alternatively, the diffusion of ozone is triggered by pressing a trigger switch located on a remote control, in particular adapted to be fixed on the door of the confined space or in the vicinity thereof. The remote control may be configured to display a count of the remaining broadcast time of the ozone, and / or prohibit unintentional entry into the confined space as the diffusion of ozone takes place. The remote control may be configured to also display the countdown of a predetermined time to stop the diffusion of ozone to prevent entry into the confined space as the ozone level is high and inconvenient. The use of a remote control allows to operate the device according to the invention safely.

The remote control advantageously comprises a start / stop button, at least two program-preselection buttons, a display for displaying the remaining broadcast time of the ozone countdown and / or the remaining time of said predefined duration Stationary the diffusion of ozone, and one or more LEDs. The remote control comprises in particular a red light configured to be operated for the duration of diffusion of ozone, a flashing red light for a predetermined time after completion of diffusion of ozone to prevent access to the confined space is not recommended, and a green light indicating that access to the confined space is not objectionable. Pressing one of the program preset buttons advantageously trigger office diffusion of ozone.

The remote can be programmed for a delayed start of diffusion of ozone. In this case, the remote control may include a program preset button for a delayed start program of the diffusion of ozone. The time for which the start is delayed is preferably predefined, eg being registered in advance in the control interface.

The remote control may be wired or wireless, operating for example by radio waves, infrared, WiFi or Bluetooth.

Said remote control may be capable of being fixed on a clamp, said clamp being preferably adapted to be attached to the door handle of the confined space. The clamp may comprise a housing in which the remote control can be inserted. Alternatively, a clamp is attached to the back of the remote control. In another variant, the remote control is attached to the clamp through a chain.

The clamp is preferably a so-called clamp "crocodile". The clamp may comprise two jaws articulated around an axis and extended by two arms, the latter being kept apart by a spring, forcing the jaws in the closed position at rest. The clamp is thus advantageously adaptable to all handles.

The decontamination apparatus of the invention is advantageously located in the confined space to be decontaminated. The device according to the invention may be a housing having all or part of the ozone generator, the diffuser, the suction and the interface control system. The length of the housing may be between 25 cm and 40 cm, being in particular equal to 18 cm. The width of the housing may be between 8 cm and 30 cm, in particular being equal to 10.5 cm. The depth of the housing may be between 4 cm and 20 cm, in particular being equal to 6 cm. The device according to the invention is thus minimal dimension.

The device can be autonomous in electricity, including using an onboard battery. In a variant, the device depends on the power of the confined space to be decontaminated.

The ozone generator may comprise two plates having a potential difference greater than or equal to 2000 V, including being equal to 6000 V.

The device of the invention may comprise a vacuum system configured to draw the oxygen present in the space to be decontaminated and to send to the ozone generator.

The suction of the oxygen system may be a pump.

The ozone diffuser can be a fan, internal or external.

The decontamination device of the invention may include a control interface to configure include exhibition period of ozone, for example prior to the introduction of the device in the confined space.

The device may be configured to receive information from a closing door sensor space to be decontaminated, so as to automatically trigger the diffusion of ozone, after the closing of the door has been detected. This sensor is for example a parallel switch controlling the illumination of the space when the door is open, or a specific switch. Alternatively, the control interface is controlled by the aforementioned remote control.

The invention is advantageously applicable to a vehicle element such as a trailer or semi-trailer, a container, and refrigerated vehicles such as semi-trailers, and trucks and vans, buses or coaches.

The invention can also be used to deodorize and decontaminate closed rooms, in public or private places, such as in private residential housing, or especially in places where contamination is possible by resurgence and proliferation of multiple infectious factors eg cold rooms, waiting rooms, including medical offices, clinics and hospitals, operating theaters of human or veterinary medicine, or cribs. The invention further relates to a vehicle, in particular cooling, comprising a device for decontaminating an enclosed space according to the invention.

The characteristics set out above for the method and apparatus apply to the vehicle.

The refrigerated vehicle is for example a van, a truck, for example of more than 3.5 T, or a semi-trailer vehicle having a trailer and a towing vehicle cabin.

The invention will be better understood from reading the description which follows, of embodiments of the invention, and on examining the accompanying drawings, wherein:

- Figure 1 is a diagram showing diagrammatically a device for decontaminating an enclosed space according to the invention,

- Figures 2 and 3 are examples of confined spaces incorporating the device according to the invention,

- Figure 4 shows a remote control used for controlling the device according to the invention, and

- Figure 5 shows a clip on which the remote control can be fixed. Is illustrated in Figure 1, schematically and partially, a decontamination device 1 of a confined space E according to the invention. The device 1 is located within the space E to be decontaminated, as shown in Figures 2 and 3. The device 1 is preferably autonomously electricity. Alternatively, the device 1 depends on the power of the confined space E.

In the example described, as shown in Figure 1, the device 1 comprises a suction system 4 configured to draw the oxygen present in the space E to be decontaminated. The suction of the oxygen system is preferably a pump. The invention is however not limited to a particular type of suction system.

The oxygen thus drawn into the space E is sent to an ozone generator 2, configured to generate ozone in a closed circuit from oxygen. The ozone generator 2 comprises, in the example described, two plates having a potential difference, for example equal to 6000 V. The present invention is however not limited to a particular type of ozone generator.

The device 1 further comprises a distributor 3 configured to broadcast the ozone thus generated in the confined space E to decontaminate after each closing of the door P of the space E and for a predefined duration D. In the example described, the ozone diffuser 3 is a fan, internal or external.

In the example described, and as seen in Figure 1, the decontamination device 1 includes a controller 5 interface for programming the duration D of diffusion of ozone, for example prior to the introduction of the device in 'confined space.

The confined space of the door P E can be connected to a closure of said door sensor, the control interface 5 of the device 1 being configured to receive information from said door closure sensor to automatically trigger the diffusion of ozone.

In a variant or in combination, 1 decontamination device may comprise a trigger switch of the diffusion of ozone.

Alternatively, the diffusion of ozone is triggered by pressing a trigger switch located on a remote control 10 adapted to attach to the door P of the confined space E. In the example considered, the remote control 10 is adapted to be secured to a clamp 20, shown in Figure 5 and attachable to the handle E p of the door P to the confined space E. the clamp is, in the example described and as shown, a so-called clamp "crocodile", comprising two jaws 22, 23 hinged around an axis and extended by two arms 24, 25, the latter being kept apart by a spring 26, forcing the jaws 22, 23 in the closed position at rest. When the user exerts pressure on the arms 24, 25, it spreads the jaws 22, 23 thus allowing to position the gripper, for example on the handle E p of the confined space E. The clamp 20 comprises a housing 21 in wherein the remote control 10 is inserted after use. The invention is however not limited to a particular type of clamp.

In the example, the remote control 10 is wired, thereby making it more difficult still. However, the invention is not limited to a particular type of remote control.

In the example described and as shown in FIG 4, the remote controller 10 comprises a start / stop button 11, three program preset buttons 13, 14, 15, a display 12, and three LEDs 16, 17, 18. the display 12 is preferably a 7-segment display, and indicator lights 16, 17 and 18 of light emitting diode (or "LED" in English), the LED 16 being red for example, the LED 18 being red and blinking , and the LED 18 being green. The example described remote control further comprises a mains input 19a and an output 19b to connect it to the control interface 5 of the device according to the invention. These inlet and outlet 19a and 19b are, for example IEC sockets. The remote control advantageously comprises a programmed electronic board 12c to accommodate the program selection and thus trigger the transmission time timer ozone, control the display 12, indicator lights 16, 17, 18, and communication with the control interface 5.

In an example of operation of the decontamination process according to the invention, a user selects a program by pressing one of the program preset buttons 13, 14 yes 5. The first program is for example an ozone diffusion time 60 minutes, the second program for a period of 120 minutes, and the third program for a period of 180 minutes. The user chooses the first such program by pressing the button 13. The display 12 displays 80 minutes corresponding to a broadcast time of ozone 60 minutes plus a fixed time of 20 minutes that the ozone level remains high and uncomfortable. By pressing the on / off button 11, the ozone diffuser 3 starts up, the counting of time starts, and the two red LEDs remain on without flashing during the transmission period of ozone, 60 minutes in the example. At the end of the distribution of ozone, the display 12 displays 20 minutes and the red indicator light flashes 17 to warn the user that it is better not to enter the confined space. When the count is zero, the red LEDs 16 and 17 are extinguished and the green LED 18 lights up to indicate the possibility of entering the confined space E without being inconvenienced.

The duration of the ozone diffusion D is advantageously defined according to a parameter depending on the volume of the space S to be decontaminated and power of the ozone generator 2.

The duration D of diffusion of ozone is for example between 1 minute and 50 minutes, for example being equal to 30 minutes. The dosage of ozone distributed in the space E to be decontaminated is preferably based on at least the power of the ozone generator 2 and the volume of the space S to be decontaminated.

The decontamination apparatus 1 of the invention is more particularly intended for cars, refrigerated or not, carrying merchandise can be damaged by germs or bacteria, as shown in Figure 2. The device 1 is for example arranged to an angle of the vehicle, opposite its rear doors P or the center of the ceiling.

In the variant shown in Figure 3, the 1 decontamination device is installed in a waiting room, in particular in a waiting room of a doctor's office or a hospital, where bacteria and infectious components can multiply quickly.

The high disinfecting power of ozone is used to remove most bacteria and germs present in the confined space E.

In the examples described, the device 1 according to the invention is a housing having the ozone generator 2, the diffuser 3, the intake system 4 and the control interface 5, as shown in Figures 2 and 3. In variants not shown, the device 1 does not have one or the other of these elements, the diffuser and / or the suction system can in particular be deported.

In the examples considered, the length of the housing is 18 cm, its width is 10.5 cm and its depth is 6 cm.

Claims

1. A method for decontaminating an enclosed space (E) delimited by at least one door (P), particularly of a vehicle, wherein:
- ozone is generated in a closed circuit from the oxygen present in said confined space (E), and
- ozone thus generated is distributed within said confined space (E) to decontaminate after each closing of the door (P) and for a time (D) defined in advance.
2. The method of claim 1, wherein the duration (D) for diffusion of ozone is defined using a parameter dependent at least the volume of the space (E) to be decontaminated.
3. The method of claim 1 or 2, wherein an ozone generator (2) being used to generate ozone, the parameter defining the duration (D) for diffusion of ozone also depends on the power of the ozone generator (2).
4. A method according to any one of claims 1 to 3, wherein the duration (D) for diffusion of ozone is between 1 minute and 50 minutes, preferably between 5 minutes and 30 minutes.
5. A method according to any preceding claim, wherein the broadcast ozone dosage is based on at least the power of the generator (2) used to generate the ozone and the volume of the space (E) decontaminate.
6. A method according to any preceding claim, wherein the distribution of ozone is activated by pressing a trigger switch located on a remote control (10), adapted in particular to be attached to the door (P) of confined space (E) or in the vicinity thereof.
7. Device (1) for decontaminating an enclosed space (E) delimited by at least one door (P), particularly of a vehicle, comprising at least:
- an ozone generator (2) configured to generate ozone in a closed circuit from the oxygen present in said space (E), and
- a diffuser (3) configured to broadcast the ozone thus generated within said confined space (E) to decontaminate after each closing of the door (P) and for a time (D) defined in advance.
8. Device according to the preceding claim, being located in the confined space (E) to be decontaminated.
9. Device according to claim 7 or 8, being self-sufficient in electricity, or dependency on electricity of the confined space E.
10. Device according to any one of claims 7 to 9, wherein the ozone generator (2) comprises two plates having a potential difference greater than or equal to 2000 V, being in particular equal to 6000 V.
11. Device according to any one of claims 7 to 10, comprising a suction system (4) configured to draw the oxygen present in the space (E) to be decontaminated and to send to the ozone generator (2).
12. Device according to the preceding claim, wherein the suction system (4) oxygen is a pump.
13. Device according to any one of claims 7 to 12, wherein the ozone diffuser (3) is a fan.
14. Apparatus according to any one of claims 7 to 13, comprising a remote control (10) adapted to be fixed to a clamp (20) or a clip being attached to the back of the remote control, said gripper being particularly capable of binding on the handle (E p) of the door (P) of the confined space (E).
15. Vehicle, in particular refrigerant, comprising a device (1) for decontaminating an enclosed space (E) according to any one of claims 7 to 14.
PCT/EP2017/050501 2016-01-11 2017-01-11 Method and device for decontaminating a confined space WO2017121767A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1650207A FR3046542A1 (en) 2016-01-11 2016-01-11 Process for decontamination space confines
FR1650207 2016-01-11

Publications (1)

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WO2017121767A1 true true WO2017121767A1 (en) 2017-07-20

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000006209A2 (en) * 1998-07-29 2000-02-10 Eco-Aire Company, Inc. Method and apparatus for producing purified or ozone enriched air to remove contaminants from objects
US20050123436A1 (en) 2002-04-16 2005-06-09 Cumberland John R. Method for abatement of allergens, pathogens and volatile organic compounds
US20080159910A1 (en) 2006-12-29 2008-07-03 Dick Paul H Shipping container ozonation system
US20090311138A1 (en) 2006-01-31 2009-12-17 Peter Klaptchuk Sanitization of aircraft or vehicle cabin
US20120020830A1 (en) 2004-03-18 2012-01-26 Viroforce Systems, Inc. Apparatus And Method For Using Ozone As A Disinfectant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000006209A2 (en) * 1998-07-29 2000-02-10 Eco-Aire Company, Inc. Method and apparatus for producing purified or ozone enriched air to remove contaminants from objects
US20050123436A1 (en) 2002-04-16 2005-06-09 Cumberland John R. Method for abatement of allergens, pathogens and volatile organic compounds
US20120020830A1 (en) 2004-03-18 2012-01-26 Viroforce Systems, Inc. Apparatus And Method For Using Ozone As A Disinfectant
US20090311138A1 (en) 2006-01-31 2009-12-17 Peter Klaptchuk Sanitization of aircraft or vehicle cabin
US20080159910A1 (en) 2006-12-29 2008-07-03 Dick Paul H Shipping container ozonation system

Also Published As

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