CN112167725B - Application of organic porous material in aerosol generating device and atomizer using material - Google Patents
Application of organic porous material in aerosol generating device and atomizer using material Download PDFInfo
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- CN112167725B CN112167725B CN201910593233.XA CN201910593233A CN112167725B CN 112167725 B CN112167725 B CN 112167725B CN 201910593233 A CN201910593233 A CN 201910593233A CN 112167725 B CN112167725 B CN 112167725B
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/44—Wicks
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/42—Cartridges or containers for inhalable precursors
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/10—Devices using liquid inhalable precursors
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Abstract
The present application relates to the use of an organic porous material in an aerosol generating device, and to an atomiser using the material. The organic porous material is at least partially a melamine resin porous material, the melamine resin porous material has a decomposition temperature of over 400 ℃, can be used at a high temperature of 180-240 ℃ for a long time without change of properties, and can cover the working temperature range of the atomizer; in addition, the material has high aperture ratio and controllable aperture distribution, can realize good liquid guiding and liquid locking performances at the same time, and is an ideal liquid guiding material for the atomizer. This application is applied to the atomizer with this organic porous material and uses, has that the imbibition is quick, the stock solution capacity is high, the drain is unobstructed, forms nanometer capillary microstructure after soaking liquid, the outstanding advantage of lock liquid ability.
Description
Technical Field
The invention relates to the field of aerosol generating devices, in particular to application of an organic porous material in an aerosol generating device and an atomizer using the organic porous material.
Background
A device for converting an atomized liquid containing nicotine or the like into an aerosol by means of heating and atomizing an atomizing core is an electronic product simulating a cigarette, and the generated aerosol has smoke, taste and feeling similar to those of a cigarette. The aerosol containing nicotine produced by atomization does not contain harmful carcinogenic substances such as tar and the like commonly existing in the smoke of common cigarettes, and is considered to be a cigarette substitute which is beneficial to the health of traditional smokers. Meanwhile, the electronic device has the characteristics of good portability, no naked flame, no second-hand smoke and environmental protection, and is popular with many smokers.
The heating atomization technology of aerosol generating device, which is widely used at present, mainly has two types: 1) Cotton or fiber bundle is used as liquid guide, and the electric heating wire is wound on the cotton or fiber bundle to directly heat the tobacco tar to atomize the tobacco tar; 2) The honeycomb ceramics is used as a liquid guide body, and the smoke oil is atomized by heating in modes of heating wires or electric heating belts and the like.
The cotton or fiber bundles are used as the liquid guide, have the characteristics of simple structure, good effect and the like, and are fully determined by users in the open type oil dripping large smoke atomizing core. The cotton is fluffy, the oil absorption amount is high, but the heat resistance is poor, the ignition point is only 150 ℃, the compression modulus is low, the large-scale permanent deformation is easy to cause, and the problems of oil leakage and core pasting are difficult to solve when the cotton is applied to closed small cigarettes. The fiber bundles or glass wool made of materials such as glass or special polymers have good heat resistance, but have high density, low saturated oil absorption and unsatisfactory liquid locking capacity.
The porous ceramic formed by sintering the components such as aggregate, a binder, a pore-forming agent and the like has a large number of pore channel structures which are communicated with each other and the surface of the material, has excellent performances such as stable chemical property, low thermal conductivity, high temperature resistance, corrosion resistance and the like, and makes up the performance defects of liquid guide of cotton and fiber bundles to a certain extent. However, the existing porous ceramic liquid guides in the industry generally have the problems of low porosity, large micropore diameter and the like, and the liquid suction and guide aspects can basically meet the design requirements, but the liquid locking capability needs to be improved, namely oil leakage is easy to occur.
Disclosure of Invention
In order to solve the problems of oil leakage of the atomizing core and core pasting of the cotton liquid guide material in the prior art, the invention creatively provides the following solutions.
In a first aspect, the present invention provides the use of an organic porous material, which is at least partially a melamine resin porous material, in an aerosol generating device.
Further, the apparent density of the organic porous material is 3-120 multiplied by 10 -3 g/cm 3 Preferably 4 to 12X 10 -3 g/cm 3 。
Further, the 25% deformation compression strength of the organic porous material is 5-30 KPa.
Further, the organic porous material has a decomposition temperature higher than 300 ℃, preferably higher than 350 ℃, more preferably higher than 400 ℃.
Further, the organic porous material has an open porosity of greater than 60%, preferably greater than 80%, more preferably greater than 95%.
Further, the organic porous material has a pore size distribution in which more than 90% of the pore volume has a pore size in the range of 10 nm to 100 μm, preferably in the range of 10 nm to 1 μm, more preferably in the range of 10 nm to 100 nm, and still more preferably in the range of 10 nm to 50 nm.
Further, the aerosol generating device comprises a heat generating element, and the organic porous material is used as a liquid conducting body to be in contact with or adjacent to the heat generating element.
Further, the aerosol generating device comprises a heating element, the organic porous material is used for conducting liquid, and other porous materials are arranged between the organic porous material and the heating element.
In a second aspect, the present invention also provides an atomiser for an aerosol generating device comprising:
a housing; a liquid storage bin for storing atomized liquid is formed in the shell and comprises an outlet; an aerosol channel extending along the lengthwise direction of the shell is formed in the shell, and comprises an inlet and an air outlet, and the air outlet is positioned at one end of the shell;
the atomization core is contained in the shell, and the outlet of the liquid storage bin is communicated with the liquid absorption surface of the atomization core; the atomizing surface of the atomizing core is communicated with the aerosol channel, and the atomizing core is at least partially made of melamine resin porous materials;
the fixing piece is used for fixing the atomizing core and the shell;
a heating element in contact with or adjacent to the atomization surface; and
and the electrode is used for electrically connecting the heating body and enabling the heating body to receive electric power.
Further, the atomization core comprises a porous ceramic and a melamine resin porous material, one surface of the porous ceramic forms the atomization surface, one surface of the melamine resin porous material forms the liquid absorption surface, and the melamine resin porous material at least partially covers the porous ceramic, so that the atomized liquid enters the atomization core through the liquid absorption surface and is conducted to the atomization surface.
The organic porous material is at least partially a melamine resin porous material such as melamine sponge. In the present invention, a melamine resin porous material can be preferably used as a liquid-guiding material for an aerosol-generating device as a whole. The melamine resin porous material and other porous materials can also be compounded to form the liquid guide material, for example, the melamine resin porous material and non-woven fabrics, cotton and other materials with capillary phenomenon are compounded to form the liquid guide material, and the compounding can be bonding, overlapping and the like.
The melamine sponge is a material with a three-dimensional porous structure, the porosity of the melamine sponge can reach 99 percent, the aperture ratio of the melamine sponge can reach more than ninety-five percent, and the melamine sponge has good flame retardance, namely, the melamine sponge does not burn after being contacted with open fire and can be self-extinguished after being away from the fire. The melamine resin is slowly decomposed when the temperature exceeds 420 ℃, and thermal decomposition products are harmless to human bodies. The melamine sponge has excellent chemical stability, safety and environmental protection due to the stable chemical and crosslinking structure.
Compared with cotton commonly used in the field, the organic porous material provided by the invention has the advantages of high saturated liquid absorption amount, good appearance after saturated liquid absorption, high temperature resistance and the like, and is favorable for better conveying liquid tobacco tar to the heating wire.
Compared with the ceramic porous material commonly used at present, the organic porous material provided by the invention has high aperture ratio, can convey and conduct liquid tobacco tar more smoothly, has good tobacco tar affinity, and has good liquid tobacco tar locking capacity.
Drawings
The invention will be further described with reference to the following drawings and examples, in which:
FIG. 1 is an SEM photograph showing the microstructure and pore size distribution of a melamine resin porous material according to the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of one embodiment of an aerosol generating device using an organic porous material;
fig. 3 is a schematic cross-sectional structure diagram of another embodiment of an aerosol generating device using an organic porous material. The organic porous material covers the surface of the porous ceramic heating body with the heating wire sintered inside, so as to make up for the deficiency of the liquid locking capacity of the porous ceramic.
Fig. 4 is a schematic diagram of an atomizing core of an example in which a surface of a porous ceramic heating element having a heating wire sintered therein is covered with a melamine resin porous material. It is clearly shown that the liquid locking ability of the melamine resin porous material is superior to that of the porous ceramic, the ceramic portion has liquid droplets exuded, and the surface of the melamine resin porous material portion is wet but has no liquid exudation.
Fig. 5 is a schematic structural diagram of an embodiment of an open type large smoke atomization core made of an organic porous material, which is an embodiment directly using the organic porous material as an oil storage and oil guide body and is applied to the open type oil dropping large smoke atomization core.
FIG. 6 is a photograph showing the liquid locking ability of an absorbent cotton atomizing core (a) and a melamine resin porous material atomizing core (b).
FIG. 7 is a photograph comparing the liquid storage and burn-out preventing effects of an absorbent cotton atomizing core (a) and a melamine resin porous material atomizing core (b).
Reference numbers in the figures:
1-a heating element;
2-a porous body of organic material;
3-a seal;
4-liquid tobacco tar;
5-an air inlet;
6-an aerosol outlet;
7-direction of flow of liquid tobacco tar;
8-aerosol escape pipe;
9-an atomizer housing;
10-power supply positive electrode, 11-power supply negative electrode;
12-a sealing cover;
13-ceramic porous body with embedded heating wire.
Detailed Description
The present invention will be described in further detail with reference to the following examples and the accompanying drawings. The embodiments are only for clear understanding of technical features, objects and effects of the present invention, and are not intended to limit the present invention.
FIG. 1 is a microstructure SEM photograph (a) and a pore size distribution (b) of a melamine resin porous material according to the present invention;
the melamine resin porous material is flexible nanometer superfine fiber foamed plastic with narrow pore size distribution, and melamine resin sponge has high temperature resistance and no volatilization and deformation at temperature below 400 deg.c and is suitable for long term operation at 200-240 deg.c. The liquid guiding and liquid locking capacity of the liquid tobacco tar of the melamine resin sponge has an unobvious relationship with the pore size of the melamine sponge, and the good oil guiding and liquid locking effects can be realized when the average pore size is as low as about 20 nanometers to 100 micrometers.
Reference is made to fig. 2, which is a schematic cross-sectional view of an embodiment of an aerosol generating device employing an organic porous material.
A spiral heating element 1 wound with an electric heating wire or an electric heating tape, wound on the surface of a cylindrical organic material porous body 2;
the organic material porous body 2 has a dumbbell-shaped structure with a thin middle part and thick two ends;
the aerosol escape pipeline 8 is in a circular tubular shape, the bottom of the aerosol escape pipeline is provided with a through transverse circular symmetrical hole, the organic material porous body 2 wound with the heating body 1 is arranged in the circular symmetrical hole in a transverse mode, and the dumbbell-shaped structure with thicker and larger two ends can play a role in sealing to prevent liquid tobacco tar from leaking after absorbing the liquid tobacco tar 4 in the liquid storage cavity;
the bottom of the atomizer shell 9 of the aerosol generating device is of an open structure so as to inject liquid tobacco tar; after the aerosol escape pipe 8, the heating body 1, the porous body 2 and the liquid tobacco tar 4 are assembled, the bottom of the shell 9 of the aerosol generator is sealed by a sealing part made of silicon rubber.
The liquid tobacco tar 4 enters the liquid storage part inside the porous body through the liquid absorption surface of the porous body 2 and reaches the atomization surface. The flow direction of the soot is shown at 7.
When a pumping action occurs, the trigger controller supplies power via the electrodes 10 and 11, and the heating element transfers heat to the liquid tobacco tar on the atomization surface of the porous body.
The liquid tobacco tar on the atomizing surface receives the heat transferred by the heating element 1, is converted into a gas state, interacts with the air entering from the air inlet 5 to generate aerosol, and the aerosol escapes from the aerosol outlet 6.
The embodiment is an aerosol generator with a simple structure, and is characterized in that a microscopic three-dimensional nano-mesh structure of an organic porous material is fully utilized, so that the rapid liquid absorption is realized, the liquid storage capacity is effectively improved, and the unobstructed conveying capacity of liquid tobacco tar in a porous body is enhanced; the nano capillary microstructure is formed after the nano capillary is soaked in the liquid, the liquid locking capacity is outstanding, and the problem of scaling caused by easy oil leakage can be effectively solved; the aerosol smoke generated by the atomizing surface of the porous body immediately escapes along the escape channel along the pumping direction, so that the problems of 'taste reduction' and the like caused by retention or repeated heating are solved, and the generation probability of 'thermal cracking byproducts' is greatly reduced.
Referring to fig. 3 and 4 together, a schematic cross-sectional view and a physical view of an aerosol generating device using an organic porous material according to another embodiment of the present invention are shown.
The organic material porous body 2 covers the surface of the ceramic porous body 13 in which the heating wire 1 is sintered to make up for the insufficient liquid locking capacity of the porous ceramic.
The porous ceramic liquid-guiding body is used in the industry, and the porous ceramic body has excellent performances of stable chemical property, low thermal conductivity, high temperature resistance, corrosion resistance and the like, and the performance defects of liquid-guiding bodies of cotton and fiber bundles are made up to a certain extent.
However, limited to the brittleness and fragility of the ceramic material itself, the ceramic porous body generally has the problems of low porosity, large pore diameter and the like, the porosity ranges from 40% to 80%, the pore diameter ranges from 10 μm to 300 μm, the liquid absorption and drainage can basically meet the design requirements, but the liquid locking capacity needs to be improved, namely oil leakage is easy.
Fig. 4 is a schematic view showing an example of coating the surface of a porous ceramic heating element with a heating wire sintered therein with an organic porous material. The figure clearly shows that the liquid locking capacity of the organic porous material is superior to that of the porous ceramic, liquid drops on the ceramic part are seeped and hung on the heating wire lead, and the surface of the organic porous material part is wet but no liquid is seeped.
Referring to fig. 5, a schematic structure of an embodiment of the open oil-dripping big smoke atomizing core made of organic porous material is shown.
In the embodiment, the organic porous material is directly adopted as the oil storage carrier and the oil guide body, and is applied to the open type oil dripping large-smoke atomizing core to directly replace the cotton oil storage carrier and the oil guide body adopted in the industry.
The ignition point of cotton is only 150 ℃, and the cotton is extremely easy to be burnt by the electric heating wire.
The melamine resin porous material taking the heat-resistant polymer as the base material has the thermal decomposition temperature of over 400 ℃, the long-term use temperature of 200-240 ℃, and the working temperature range of the electronic cigarette atomization core is just covered. Can be slowly decomposed when the temperature exceeds 420 ℃, and the thermal decomposition products are harmless to human bodies.
Compared with cotton, the organic porous material provided by the invention has the advantages of high saturated liquid absorption amount, good appearance after saturated liquid absorption, high temperature resistance and the like, and is favorable for better conveying liquid tobacco tar to a heating body.
Referring to fig. 6, in addition to comparing the liquid-locking performance of the ceramic porous material and the melamine resin porous material (refer to fig. 4), the present invention further compares the liquid-locking performance of the absorbent cotton and the melamine resin porous material, and fig. 6 is a comparison of appearance morphology of the absorbent cotton atomized core (a) and the melamine resin porous material atomized core (b) after the absorbent cotton atomized core and the melamine resin porous material atomized core are saturated and adsorb liquid tobacco tar. After standing for 10 minutes, a great amount of tobacco tar adsorbed in the absorbent cotton atomizing core (a) overflows, while the melamine resin porous material atomizing core (b) still maintains the appearance of initial saturated adsorption, and almost no tobacco tar overflows.
Referring to fig. 7, the present invention further studies the comparison of the liquid storage and burning prevention effects of the absorbent cotton atomization core (a) and the melamine resin porous material atomization core (b), fig. 7 shows the comparison of the liquid storage and burning prevention effects of the absorbent cotton atomization core (a) and the melamine resin porous material atomization core (b), and the appearance of the absorbent cotton atomization core (a) and the melamine resin porous material atomization core (b) after saturated adsorption of liquid tobacco tar after heating for 8 seconds, wherein the heating conditions are 1.2 ohm heating filament and 3.7 v voltage. After heating for 8 seconds, the heating element is removed, and observation shows that part of the surface of the absorbent cotton is burnt, and the melamine resin porous body has complete appearance. And under the condition of basically equivalent volume, the quantity of the smoke oil absorbed by the absorbent cotton is obviously lower than that of the melamine resin porous material, which also provides a favorable aspect for smooth oil supply and prevention of dry burning.
It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described in the present specification, which are provided as additional limitations to the present invention and to provide a more thorough understanding of the present disclosure. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (14)
1. Use of an organic porous material in an aerosol generating device, wherein the aerosol generating device comprises a heat generating element, wherein the organic porous material is used as a liquid conductor in contact with or adjacent to the heat generating element, wherein the organic porous material is at least partially a melamine resin porous material, and wherein the organic porous material has a pore size distribution such that the volume of pores having a pore size in the range of 10 nm to 100 μm exceeds 90%.
2. The use according to claim 1, wherein the organic porous material has an apparent density of (3 to 120) x 10 -3 g/cm 3 。
3. Use according to claim 1, wherein the organic porous material has an apparent density of (4 to 12) x 10 -3 g/cm 3 。
4. Use according to claim 1, wherein the organic porous material has a 25% proof compression strength of 5 to 30KPa.
5. Use according to claim 1, characterized in that the organic porous material has a decomposition temperature higher than 300 ℃.
6. Use according to claim 1, characterized in that the organic porous material has a decomposition temperature higher than 350 ℃.
7. Use according to claim 1, characterized in that the organic porous material has a decomposition temperature higher than 400 ℃.
8. Use according to claim 1, wherein the organic porous material has an open porosity of more than 60%.
9. Use according to claim 1, wherein the organic porous material has a pore size distribution such that the volume of pores with a pore size in the range of 10 nm to 1 μm exceeds 90%.
10. Use according to claim 1, characterized in that the organic porous material has a pore size distribution such that the volume of the pores with a pore size ranging from 10 nm to 100 nm is more than 90%.
11. Use according to claim 1, wherein the organic porous material has a pore size distribution such that the volume of pores having a pore size in the range of 10 nm to 50 nm is more than 90%.
12. Use according to any of claims 1-11, characterized in that between the organic porous material and the heat-generating element there is included a further porous material.
13. An atomizer for an aerosol generating device, comprising:
a housing; a liquid storage bin for storing atomized liquid is formed in the shell and comprises an outlet; an aerosol channel extending along the lengthwise direction of the shell is formed in the shell, and comprises an inlet and an air outlet, and the air outlet is positioned at one end of the shell;
the atomization core is accommodated in the shell, and the outlet of the liquid storage bin is communicated with the liquid absorption surface of the atomization core; the atomizing surface of the atomizing core is communicated with the aerosol channel, and the atomizing core is characterized by comprising an organic porous material, wherein the organic porous material is at least partially a melamine resin porous material, and the pore size range of the organic porous material is distributed in such a way that the volume of pores with the pore size range of 10 nanometers to 100 micrometers exceeds 90%;
the fixing piece is used for fixing the atomizing core and the shell;
the heating element is in contact with or close to the atomization surface; and
and the electrode is used for electrically connecting the heating body and enabling the heating body to receive electric power.
14. The nebulizer of claim 13, wherein the nebulizing core comprises a porous ceramic and a melamine resin porous material,
one of the surfaces of the porous ceramic forms the atomization surface, one of the surfaces of the melamine resin porous material forms the liquid absorption surface,
the melamine resin porous material at least partially covers the porous ceramic so that the atomized liquid enters the atomizing core through the liquid suction surface and is conducted to the atomizing surface.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593233.XA CN112167725B (en) | 2019-07-03 | 2019-07-03 | Application of organic porous material in aerosol generating device and atomizer using material |
| US17/621,706 US20220240580A1 (en) | 2019-07-03 | 2020-07-03 | Use of organic porous material in aerosol generating device and atomizer using organic porous material |
| PCT/CN2020/100226 WO2021000952A1 (en) | 2019-07-03 | 2020-07-03 | Use of organic porous material in aerosol generating device and atomizer using organic porous material |
| EP20834850.8A EP3995020B1 (en) | 2019-07-03 | 2020-07-03 | Use of organic porous material in aerosol generating device and atomizer using organic porous material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593233.XA CN112167725B (en) | 2019-07-03 | 2019-07-03 | Application of organic porous material in aerosol generating device and atomizer using material |
Publications (2)
| Publication Number | Publication Date |
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| CN112167725A CN112167725A (en) | 2021-01-05 |
| CN112167725B true CN112167725B (en) | 2023-03-14 |
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| CN201910593233.XA Active CN112167725B (en) | 2019-07-03 | 2019-07-03 | Application of organic porous material in aerosol generating device and atomizer using material |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20220240580A1 (en) |
| EP (1) | EP3995020B1 (en) |
| CN (1) | CN112167725B (en) |
| WO (1) | WO2021000952A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112931969A (en) * | 2021-02-10 | 2021-06-11 | 深圳麦克韦尔科技有限公司 | Liquid guide element, atomizer and atomization device |
| CN113197345A (en) * | 2021-04-16 | 2021-08-03 | 深圳麦克韦尔科技有限公司 | Atomizing core material, atomizing core, preparation method of atomizing core and electronic atomizing device |
| CN115521499B (en) * | 2021-06-24 | 2024-04-05 | 深圳麦克韦尔科技有限公司 | Organic porous material and preparation method and application thereof |
| CN114847532A (en) * | 2022-03-31 | 2022-08-05 | 海南摩尔兄弟科技有限公司 | Electronic atomization device and atomization core thereof |
| CN117617556A (en) * | 2022-08-18 | 2024-03-01 | 深圳市合元科技有限公司 | Atomizer, electronic atomizing device, atomizing assembly and preparation method |
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- 2019-07-03 CN CN201910593233.XA patent/CN112167725B/en active Active
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2020
- 2020-07-03 US US17/621,706 patent/US20220240580A1/en active Pending
- 2020-07-03 EP EP20834850.8A patent/EP3995020B1/en active Active
- 2020-07-03 WO PCT/CN2020/100226 patent/WO2021000952A1/en unknown
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| CN109069497A (en) * | 2016-02-29 | 2018-12-21 | 尼古珍有限公司 | Nicotine formulation and aerosol |
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| Publication number | Publication date |
|---|---|
| CN112167725A (en) | 2021-01-05 |
| EP3995020A1 (en) | 2022-05-11 |
| EP3995020B1 (en) | 2024-04-10 |
| EP3995020A4 (en) | 2022-09-07 |
| US20220240580A1 (en) | 2022-08-04 |
| WO2021000952A1 (en) | 2021-01-07 |
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