US20250098735A1 - A sustainable smoking article element - Google Patents

A sustainable smoking article element Download PDF

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Publication number
US20250098735A1
US20250098735A1 US18/729,667 US202318729667A US2025098735A1 US 20250098735 A1 US20250098735 A1 US 20250098735A1 US 202318729667 A US202318729667 A US 202318729667A US 2025098735 A1 US2025098735 A1 US 2025098735A1
Authority
US
United States
Prior art keywords
paper
longitudinally extending
product
hnb
element according
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
US18/729,667
Other languages
English (en)
Inventor
Ni Gusti Nyoman ALIT
Boby ALEXANDER
Naqib AHMED
Rosi Ana QOLBI
Ian ANINDYA
N/A Giyanto
Sulistyo WIDODO
Sudirman Widiarto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Filtrona Pte Ltd
Original Assignee
Filtrona Pte. Ltd.
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
Application filed by Filtrona Pte. Ltd. filed Critical Filtrona Pte. Ltd.
Publication of US20250098735A1 publication Critical patent/US20250098735A1/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A24D3/068—Biodegradable or disintegrable
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/17—Filters specially adapted for simulated smoking devices
    • 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
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the present invention provides a sustainable element for use with a smoking article such as a tobacco heating product or a heat-not-burn product.
  • Tobacco heating products or heat-not-burn (HNB) products are well known.
  • the idea of a tobacco heating product is that the tobacco is heated to a specific temperature (such as 350° C.) without burning. This delivers a vapour containing nicotine and it is believed that heating without burning avoids creation of combustion products that are harmful to the consumer.
  • Tobacco heating products or HNB products may include a plug of modified tobacco and other mouthpiece elements which are wrapped in a paper plugwrap so as to provide a cigarette-like appearance.
  • a reconstituted tobacco plug, a wrapped hollow acetate tube, a wrapped plug of PLA [poly(lactic acid)] and a conventional wrapped acetate segment are wrapped in a white paper.
  • the product may then be inserted into a heating element which heats the tobacco so the product can then be “smoked” by the consumer.
  • the function of the “filter” in these products is very different from that of a cigarette filter; the main functions are to provide the look and feel of a cigarette and also to cool the vapour down to an acceptable temperature for the consumer.
  • the PLA section that performs the significant cooling function and so it may be considered a cooling element.
  • cellulose acetate and PLA are not readily biodegradable.
  • smoking article elements such as cellulose acetate containing filter elements and cooling elements may persist in the environment for many years. Due to this, and in consideration of new EU legislation coming into force by 2021 (aimed at reducing the use of single-use plastics such as cellulose acetate filters), there is increasing interest in smoking elements (such as cooling elements) that do not comprise single-use plastics and are readily biodegradable.
  • an element for use in a smoking article comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a filtering material; wherein the filtering material comprises a paper and/or other biodegradable material (e.g. non-cellulose acetate containing material), and further comprises a hydrophobic material.
  • the element is a cooling element.
  • an element refers to any discrete segment that can be used in a smoking article.
  • the element may be a cooling element or a filtration element.
  • cooling element refers to a discrete segment which provides a significant cooling function i.e., lowering the temperature of the vapour as it passes along the length of the element.
  • biodegradable refers to the filtering material and element being able to exhibit a biodegradation of at least 90% after 6 months under controlled composting conditions (see ISO14855-1 Determination of the ultimate aerobic biodegradability of plastic materials under controlled composting conditions—Method by analysis of evolved carbon dioxide).
  • the paper and/or other biodegradable material used in the filtering material of the element of the present invention is “readily biodegradable” and has an enhanced biodegradability compared to cellulose acetate. Therefore, the present invention provides an element of enhanced biodegradability, and thus is more environmentally friendly and is more in line with EU legislation.
  • readily biodegradable refers to the filtering material and element being able to disintegrate rapidly and completely biodegrade when immersed in water.
  • the element has the ‘Ready Biodegradability’ level of biodegradability as measured according to OECD 301B ‘Ready Biodegradability’ method (modified Sturm test), which is well known in the art.
  • the phase “readily biodegradable” will here be understood to mean ‘Ready Biodegradability’ level of biodegradability.
  • the applicants have surprisingly found that by including a hydrophobic material in the filtering material along with the paper and/or other biodegradable material (e.g. non-cellulose acetate containing material), the element is able to provide equivalent cooling and filtration performance to conventional PLA and cellulose acetate elements, while also providing improved biodegradability as discussed above. This is illustrated in the examples of the present application.
  • a hydrophobic material e.g. non-cellulose acetate containing material
  • the hydrophobic material within the filtering material causes water vapour within the element (e.g. cooling element) to condense within the element (e.g. cooling element) which provides the beneficial effect of cooling the vapour as it passes through the element.
  • the hydrophobic material is distributed throughout the longitudinally extending (e.g., cylindrical, e.g., tubular) core of the element.
  • the longitudinally extending e.g., cylindrical, e.g., tubular
  • the applicants have found that this provides an optimal level of vapour cooling and filtration for use in a tobacco heating product or HNB product.
  • the filtering material is a paper and/or other biodegradable material (e.g. non-cellulose acetate containing material) with a hydrophobic material coated thereon.
  • the coated paper and/or other biodegradable material e.g. non-cellulose containing material
  • the longitudinally extending core e.g., cylindrical, e.g., tubular
  • the hydrophobic material is (e.g. substantially evenly) distributed throughout the longitudinally extending core of the element.
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) core is of uniform axial cross section (e.g., circular, e.g., annular).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) core may have a profiled outer surface including a plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels.
  • the plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels may extend the full length of the (outer surface of the) longitudinally extending core.
  • the plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels may not extend the full length of the (outer surface of the) longitudinally extending core.
  • an element for a tobacco heating product and/or HNB product comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a filtering material; wherein the filtering material comprises a paper and/or other biodegradable material (e.g. non-cellulose acetate containing material); and wherein the filtering material further comprising a hydrophobic material.
  • the element is a cooling element.
  • a smoking article e.g., tobacco heating product, HNB product
  • the element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a filtering material; wherein the filtering material comprises a paper and/or other biodegradable material (e.g. non-cellulose acetate containing material); and wherein the filtering material further comprising a hydrophobic material.
  • the element is a cooling element.
  • the smoking article may comprise one or more discrete further segments.
  • the paper and/or other biodegradable material used in the filtering material of an element for a smoking article (e.g., tobacco heating product, HNB product) according to the present invention is readily biodegradable and has an enhanced biodegradability compared to cellulose acetate. Therefore, the present invention provides an element of enhanced biodegradability, and thus is more environmentally friendly and is more in line with EU legislation.
  • readily biodegradable refers to the element being able to disintegrate rapidly and completely biodegrade when immersed in water.
  • the element has the ‘Ready Biodegradability’ level of biodegradability as measured according to OECD 301B ‘Ready Biodegradability’ method (modified Sturm test), which is well known in the art.
  • the phase “readily biodegradable” will here be understood to mean ‘Ready Biodegradability’ level of biodegradability.
  • the applicants have surprisingly found that by including a hydrophobic material in the filtering material along with the paper and/or other biodegradable material (e.g. non-cellulose acetate containing material), the element is able to provide equivalent cooling and filtration performance to conventional PLA and cellulose acetate elements, while also providing improved biodegradability as discussed above. This is illustrated in the examples of the present application.
  • a hydrophobic material e.g. non-cellulose acetate containing material
  • the hydrophobic material within the filtering material causes water vapour within the element (e.g. cooling element) to condense within the element (e.g. cooling element) which provides the beneficial effect of cooling the vapour as it passes through the element.
  • the hydrophobic material is distributed throughout the longitudinally extending (e.g., cylindrical, e.g., tubular) core of the element.
  • the longitudinally extending e.g., cylindrical, e.g., tubular
  • the applicants have found that this provides an optimal level of vapour cooling and filtration for use in a tobacco heating product or HNB product.
  • the filtering material is a paper and/or other biodegradable material (e.g. non-cellulose acetate containing material) with a hydrophobic material coated thereon.
  • the coated paper and/or other biodegradable material e.g. non-cellulose containing material
  • the longitudinally extending core e.g., cylindrical, e.g., tubular
  • the hydrophobic material is (e.g. substantially evenly) distributed throughout the longitudinally extending core of the element.
  • the tobacco heating product and/or HNB product according to the present invention further comprises one or more discrete further segments (e.g., of a HNB mouthpiece).
  • the discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow), a (e.g., cylindrical) rod of tobacco (e.g., any form of tobacco (including reconstituted tobacco)), hollow (e.g., acetate) tubes etc.
  • the filter construction could be two, three, four or more discrete segments.
  • the discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow) and/or a hollow (e.g., acetate) tube filter.
  • the multi-segment filter may be attached to a tobacco rod (which can be made from any form of tobacco (including reconstituted)).
  • the multi-segment filter may include other filter segments that include capsule containing filters, carbon containing filters, CPS filters, tube filters, acetate filters, paper filters, menthol containing filters etc.
  • a smoking article e.g., tobacco heating product, HNB product
  • a multi-segment filter attached to a tobacco rod.
  • the multi-segment filter may comprise a cooling element according to the present invention.
  • the multi-segment filter may further comprise a plug filter comprising a longitudinally extending core of cellulose acetate tow.
  • the multi-segment filter may further comprise a hollow acetate tube filter.
  • FIG. 1 shows a schematic view of a HNB product according to the invention which includes a cooling element according to an embodiment of the invention
  • FIG. 2 is a graphical representation of how the temperature at the mouth end of a HNB product varies as puffs are taken when the HNB product contains cooling element A according to the present invention in comparison with a reference HNB product, Amber HEETS.
  • FIG. 1 illustrates a schematic view of a cylindrical HNB product 100 .
  • the HNB product 100 comprises four segments: a cylindrical plug 101 of reconstituted tobacco; a hollow acetate tube 102 ; a cylindrical cooling element 103 according to an embodiment of the present invention; and a cylindrical plug of cellulose acetate tow 104 .
  • Plug 101 of reconstituted tobacco is 12 mm long and has a circumference of 22 mm, and forms one end of the HNB product 100 . This is the end inserted in a HNB device.
  • Such plugs of reconstituted tobacco are well known in the art. This plug is heated in use by a heating device (HNB device) to produce a vapour, as is well known in the art.
  • HNB device heating device
  • the plug 101 of reconstituted tobacco is abutted at one end to a 8 mm long hollow acetate tube 102 which is also of circumference 22 mm and has wall thickness 1.3 mm.
  • the end of the hollow acetate tube 102 opposite to the plug of reconstituted tobacco 101 is abutted to a 18 mm long cylindrical cooling element 103 according to an embodiment of the present invention.
  • the cylindrical cooling element 103 has a circumference of 22 mm.
  • the cylindrical cooling element 103 is made of paper coated in oxidised starch R1404. The paper contains the following components:
  • a cylindrical plug of cellulose acetate tow 104 of length 7 mm and circumference 22 mm is abutted to the opposite end of the cooling element 103 such that cooling element 103 is positioned in between cylindrical plug of cellulose acetate tow 104 and the hollow acetate tube 102 .
  • the cylindrical plug of reconstituted tobacco 101 , hollow acetate tube 102 , cylindrical cooling element 103 and cylindrical plug of cellulose acetate tow 104 are further wrapped with a plugwrap (not shown) of conventional plugwrap paper (that is known in the art). This provides an external appearance similar to that of a conventional cigarette.
  • the cylindrical plug of reconstituted tobacco 101 of the HNB product 100 is inserted into a HNB device.
  • the HNB device heats the reconstituted tobacco in the manner conventional for HNB devices.
  • This produces a hot vapour which is first drawn through the hollow acetate tube 102 and then through the cylindrical cooling element 103 and then finally through cylindrical plug of cellulose acetate tow 104 to the smoker's mouth (i.e., the mouth end).
  • drawing this hot vapour through the cooling element 103 cools the vapour down to a temperature that is acceptable for the user.
  • a hydrophobic material such as oxidised starch
  • cylindrical cooling element 103 of length 18 mm and circumference 22 mm is made of paper coated in oxidised starch R1404.
  • the paper cooling element 103 is made according to methods known in the art. This is cooling element A according to the present invention.
  • a HNB product, according to FIG. 1 was assembled for testing, including cooling element A according to the present invention. Cooling element A was used with a hollow acetate tube ( 102 in FIG. 1 ) of circumference 22 mm and wall thickness 1.3 mm and with a cylindrical plug of cellulose acetate tow ( 104 in FIG. 1 ).
  • the reference HNB product Amber HEETS includes a plug of reconstituted tobacco, a hollow acetate tube, a PLA cooling element, herein referred to as a “conventional cooling element”, and a cylindrical plug of cellulose acetate tow in an analogous arrangement to that shown in FIG. 1 .
  • the HNB product including cooling element A and the reference HNB product Amber HEETS were tested in conventional heating devices (HNB devices).
  • Each HNB product was inserted into a heating device.
  • the mouth end of the HNB product was inserted into a smoking machine which is configured to smoke the HNB product.
  • An IR camera was used to analyse the temperature at the mouth end of the HNB product while it was being smoked.
  • the smoking machine was configured to take a puff on the HNB product every 30 seconds, each puff being 2 seconds long.
  • the temperature at the mouth end of the HNB product was measured for each puff.
  • the experiment was performed at standard room temperature and humidity. The experiment was repeated for each HNB product i.e. the one containing the cooling element A according to the invention, and the reference product containing a PLA cooling element.
  • FIG. 2 illustrates the temperature at the mouth end for each puff for the HNB product comprising cooling element A in comparison with the reference HNB product Amber HEETS.
  • the Figure shows that paper based cooling element A of the present invention is capable of providing a cooling effect that is equivalent to conventional cooling elements, while providing the huge benefit of being readily biodegradable.
  • Table 1 shows that the paper cooling element A according to the present invention provides equivalent cooling and filtration performance to conventional cooling elements, while also providing improved biodegradability.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US18/729,667 2022-01-21 2023-01-20 A sustainable smoking article element Pending US20250098735A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB2200788.4 2022-01-21
GB2200788.4A GB2614895A (en) 2022-01-21 2022-01-21 A sustainable smoking article element
PCT/GB2023/050129 WO2023139386A1 (en) 2022-01-21 2023-01-20 A sustainable smoking article element

Publications (1)

Publication Number Publication Date
US20250098735A1 true US20250098735A1 (en) 2025-03-27

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ID=80568312

Family Applications (1)

Application Number Title Priority Date Filing Date
US18/729,667 Pending US20250098735A1 (en) 2022-01-21 2023-01-20 A sustainable smoking article element

Country Status (7)

Country Link
US (1) US20250098735A1 (https=)
EP (1) EP4465833A1 (https=)
JP (1) JP2025503711A (https=)
KR (1) KR20240131449A (https=)
CN (3) CN220712880U (https=)
GB (1) GB2614895A (https=)
WO (1) WO2023139386A1 (https=)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7827996B2 (en) * 2003-12-22 2010-11-09 Philip Morris Usa Inc. Amphiphile-modified sorbents in smoking articles and filters
WO2009143338A2 (en) * 2008-05-21 2009-11-26 R.J. Reynolds Tobacco Company Apparatus and associated method for forming a filter component of a smoking article and smoking articles made therefrom
US20120000481A1 (en) * 2010-06-30 2012-01-05 Dennis Potter Degradable filter element for smoking article
WO2014207704A2 (en) * 2013-06-26 2014-12-31 Pan Jiayi Filter media
EP3240438B1 (en) * 2014-12-29 2025-10-01 Philip Morris Products S.A. Hydrophobic filter
PL3890520T3 (pl) * 2018-12-07 2024-03-18 Philip Morris Products S.A. Wyrób do wytwarzania aerozolu mający biodegradowalny materiał filtracyjny
CN113260262A (zh) * 2018-12-17 2021-08-13 菲利普莫里斯生产公司 用于与气溶胶生成制品一起使用的包括多孔介质和包装物的管状元件
EP4044835A1 (en) 2019-10-16 2022-08-24 Essentra Filter Products Development Co. Pte. Ltd. A cooling element
GB202115251D0 (en) * 2021-10-22 2021-12-08 Essentra Filter Products Dev Co Pte Ltd Paper tube

Also Published As

Publication number Publication date
JP2025503711A (ja) 2025-02-04
GB2614895A (en) 2023-07-26
CN223994389U (zh) 2026-03-17
CN220712880U (zh) 2024-04-05
EP4465833A1 (en) 2024-11-27
GB202200788D0 (en) 2022-03-09
KR20240131449A (ko) 2024-08-30
WO2023139386A1 (en) 2023-07-27
CN118574525A (zh) 2024-08-30

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