WO2019093900A9 - Artificial turf mat and method for manufacture thereof - Google Patents
Artificial turf mat and method for manufacture thereof Download PDFInfo
- Publication number
- WO2019093900A9 WO2019093900A9 PCT/NL2018/050760 NL2018050760W WO2019093900A9 WO 2019093900 A9 WO2019093900 A9 WO 2019093900A9 NL 2018050760 W NL2018050760 W NL 2018050760W WO 2019093900 A9 WO2019093900 A9 WO 2019093900A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- threads
- backing
- woven
- artificial turf
- turf mat
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
- E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/567—Shapes or effects upon shrinkage
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/587—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads adhesive; fusible
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D19/00—Gauze or leno-woven fabrics
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/12—Physical properties biodegradable
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/20—Industrial for civil engineering, e.g. geotextiles
- D10B2505/202—Artificial grass
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
- E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
- E01C2013/086—Combination of synthetic and natural grass
Definitions
- the invention relates to an artificial turf mat, comprising a woven backing and a number of artificial grass blades connected thereto.
- an artificial turf mat is known in different forms.
- the known artificial turf mat is formed by a rather dense weave, from which artificial grass blades protrude on one side. These artificial grass blades are attached to the backing by means of tufting or weaving. The side of the backing remote from the protruding blades is generally stabilized by a layer of latex or by another coating. This additional layer also serves to fix the artificial grass blades firmly in the backing.
- the known artificial turf mat has the drawback that it is fully sealed on the underside by the layer of latex or the other coating, this adversely affecting the drainage of the artificial turf field.
- US 2016/265170 Al describes an artificial turf mat with a flexible base layer from which long blades and shorter blades extend.
- the short blades serve to support the longer blades, whereby they have better shock-absorbing properties.
- EP 3 029 198 Al describes a hybrid grass surface with a base sheet with therein holes through which roots of grass can protrude, and with grouped filaments which are connected to the base sheet by tufting.
- JP 2005 015 972 A describes an artificial turf mat formed by coupling a number filaments to each other in strips and weaving therefrom a mat wherein yet other filaments form pile threads.
- the invention now has for its object to provide an artificial turf mat of the above described type wherein this drawback does not occur, or at least does so to lesser extent.
- the woven backing comprises a leno weave of warp and weft threads wherein at least some of the threads are formed by melting threads, and wherein the artificial grass blades are woven into the woven backing.
- a leno weave which forms a much stronger connection than a conventional weave in that the warp threads are in a leno weave arranged twisted in pairs round the weft threads, and by here also applying melting threads for additional bonding, a woven backing is formed which has sufficient intrinsic stability to in principle be used without latex or other coating, and wherein the co-woven artificial grass blades are bonded very well.
- An artificial turf mat having a very open structure and good drainage properties can thus be formed.
- the artificial grass blades can be formed by locally cutting these fibres or pile threads. It is possible already to cut through the fibres during weaving, for instance in the manner as described in WO 2010/120174. It is possible to envisage here that the artificial grass fibres are cut through such that the artificial grass blades formed thereby have a pointed shape which approximates the shape of natural blades of grass.
- a two-sided artificial turf mat is obtained which can also be placed vertically in order to function for instance as screen or partition.
- At least some of the warp threads can further be formed by melting threads, and/or at least some of the weft threads can be formed by melting threads.
- the warp threads and/or the weft threads In order to be able to twist the warp threads properly round the weft threads so as to form the leno weave it is preferred for the warp threads and/or the weft threads to have a substantially round cross-section.
- each melting thread comprises a temperature-resistant thread core and a meltable coating surrounding the thread core.
- the melting thread can here as it were be welded to nearby threads by the melting of the coating.
- the thread core can for this purpose comprise a plastic with a relatively high melting temperature, particularly polypropylene, while the coating can comprise a plastic with a relatively low melting temperature, particularly polyethylene.
- At least some of the warp and/or weft threads can be formed by shrinking yarns.
- At least some of the warp and/or weft threads can in addition or instead be formed by spiral yarns.
- the surrounding threads can thus also be additionally fixated by having the yarns curl after weaving.
- the warp and/or weft threads are biodegradable, open spaces can be formed in the artificial turf mat, through which natural grass can grow.
- a hybrid turf mat can thus be formed.
- At least some of the artificial grass blades can be manufactured from biodegradable material.
- the artificial grass blades can thus in the first instance support natural grass blades growing through the artificial turf mat. By the time this support is no longer needed, the biodegradable artificial grass blades decay and only the non-degradable artificial grass blades and the natural grass remain, these together forming a hybrid field.
- An easily manufactured artificial turf mat is obtained when only a part of the backing is woven as leno weave. For the stability it often suffices to locally fixate conventionally woven zones by means of zones with leno weave.
- Arranged between two pairs of leno-woven warp threads can thus be a larger number of conventionally woven warp threads.
- it can be provided with at least one secondary backing connected to the woven backing. This secondary backing can also be a weave.
- the at least one secondary backing can here be manufactured from a natural fibre material, particularly jute or viscose. This natural fibre material can decay once the artificial turf mat has been laid, since the stability is then provided by the ground surface.
- the artificial turf mat can even be provided with a plurality of secondary backings, which are manufactured from different materials.
- the outer secondary backing can here serve mainly to protect the other layers when the artificial turf mat is heated in order to melt the melting threads.
- the invention also relates to a method for manufacturing an artificial turf mat.
- a conventional method comprises the steps of weaving a backing and connecting a number of artificial grass blades thereto.
- the method according to the invention is distinguished from the conventional method in that at least a part of the backing is woven by interweaving a number of warp and weft threads by means of leno weaving, wherein at least some of the interwoven threads are formed by melting threads and wherein the artificial grass blades are woven into the woven backing.
- Fig. 1 is a perspective view of an artificial turf mat according to a first embodiment of the invention on a ground surface, wherein some of the artificial grass blades have been omitted,
- Fig. 2 is a schematic top view of a leno weave as applied in the backing of the artificial turf mat according to the invention
- Fig. 3 is a cross-section through a melting thread for application in the artificial turf mat according to the invention
- Fig. 4A and 4B are respectively a side view of and a cross-sectional view through a weft thread embodied as melting thread and two warp threads of the leno weave before and after melting of the melting thread,
- Fig. 5A and 5B are schematic perspective views showing the connection between a weft thread and two warp threads embodied as shrinking yarns of the leno weave, before and after heating of the shrinking yarns,
- Fig. 6 is a schematic perspective view of a weft thread and two warp threads twisted therearound of a leno weave, wherein a number of threads is embodied as spiral yarns,
- Fig. 7 is a flow diagram with the most important steps of the method according to the invention
- Fig. 8 is a schematic bottom view of a backing of an artificial turf mat according to a second embodiment of the invention.
- An artificial turf mat 1 (Fig. 1) comprises a woven backing 2 and a large number of artificial grass blades 3 connected thereto and protruding from the backing 2 on one side - the side forming the upper side T in use.
- Backing 2 is woven from threads or yarns which, just as artificial grass blades 3, can themselves be manufactured from plastic.
- at least a part of the weave of backing 2 is according to the invention a leno-weave. In such a leno-weave the warp threads 7a, 7b are arranged twisted in pairs round weft threads 8 (Fig. 2).
- the warp threads 7a, 7b and/or the weft threads 8 are in any case partially formed by melting threads. By melting these threads after the weaving the weave is in fact“welded”, whereby it is strengthened still further. Because the weave of backing 2 is thus intrinsically stable, and can be used without coating or stabilizing layer of latex, backing 2 is lighter and easier to handle than a conventional backing with coating, while the eventual artificial turf mat will in addition have an open structure owing to the absence of the coating or the layer of latex, and is thus for instance air-permeable and water-permeable.
- Each melting thread can be formed by a temperature-resistant thread core 9 and a meltable coating 10 which encloses thread core 9 (Fig. 3).
- This meltable coating 10 provides for the bonding, while the thread core 9 will not melt and thus guarantees the strength and stability of the weave.
- a plastic with relatively high melting temperature such as polypropylene, is for instance suitable as material for the thread core 9.
- a plastic with a relatively low melting temperature, such as for instance polyethylene, could be chosen for coating 10.
- the difference in melting temperature between thread core 9 and coating 10 need otherwise not be exceptionally great, as long as it is sufficient to ensure that the mechanical properties of thread core 9 are not affected, or hardly so, when backing 2 is heated to a degree that coating 10 of the melting thread melts.
- the melting thread here has a round cross-section, whereby the leno weaving is simplified.
- the twisting of warp threads 7a, 7b around weft thread 8 results in deformation, whereby an irregular weave is obtained.
- the melting threads For the purpose of heating the melting threads use can be made of any desired heating technique, such as for instance heating by irradiation with infrared radiation. It is also possible to envisage guiding the weave along a heated roller and thus heat the melting threads. In that case it can be advantageous to protect the backing 2 on the side facing toward the heated roller with an additional backing which is manufactured from a non-meltable material, for instance a natural fibre material or a biodegradable material.
- a non-meltable material for instance a natural fibre material or a biodegradable material.
- weft thread 8 is embodied as melting thread in this example, it is of course equally possible to envisage, in addition to or instead of weft thread 8, one of the warp threads 7a, 7b or even both of the warp threads 7a, 7b being embodied as melting thread.
- warp threads 7a, 7b are for instance formed by shrinking yarns, they can in the first instance be interwoven in twisted manner with weft threads 8 in order to thus form a leno weave (Fig. 5A), after which warp threads 7a, 7b can shrink by heating and are thus pulled even more tightly around weft threads 8 (Fig. 5B).
- weft threads 8 are here once again embodied as melting threads, an even stronger connection is formed.
- FIG. 6 Another way of achieving an additional strengthening of the leno weave is shown in Fig. 6, where the weft thread 8 and warp threads 7a, 7b are all embodied as spiral yarns. Owing to the spiral form of the warp and/or weft threads 7, 8 they engage even more tightly in each other than is the case with smooth yarns, since the spiral yarns as it were hook into each other. This counteracts slippage of the threads relative to each other still further.
- the backing 2 which is formed as a leno weave and the warp and/or weft threads 7, 8 of which are embodied as melting threads, can be applied for the purpose of forming an artificial turf mat 1.
- the artificial grass blades 3 are for this purpose woven into backing 2.
- Some of the warp or weft threads 7, 8 are brought out of a main plane of the weave of backing 2 in loops in order to there form the artificial grass blades 3.
- the loops can optionally be cut through so that each loop forms two individual artificial grass blades 3. This cutting can already take place during the weaving, as described in WO 2010/120174.
- Secondary backing 4 can ensure that primary backing 2 remains flat.
- Secondary backing 4 can be manufactured from a natural fibre material, such as jute or viscose.
- an additional secondary backing (not shown here), which serves mainly to protect primary backing 2 and secondary backing 4 from overheating during heating of the melting threads, can in addition also be provided.
- This additional backing can be manufactured from a biodegradable material so that it eventually decays once artificial turf mat
- the secondary backing 4 and/or the additional backing can further serve to support and fixate a filler layer (to be discussed below) when an artificial turf field
- I I is installed on the basis of artificial turf mat 1.
- the artificial turf mat 1 already has sufficient strength and stability even without coating, latex layer or secondary backing, it is also suitable to be suspended vertically, for instance in order to form a screen or partition.
- the pile threads can be brought out of the main plane of the weave and cut on both sides, so that protruding artificial grass blades 3 are formed on both sides of backing 2.
- a two-sided artificial turf mat 1 is then thus in fact formed.
- the backing 2 is formed by strips 13 of conventional weave, which are finished on both sides with one or more pairs of warp threads 7a, 7b which are interwoven in twisted manner with weft threads 8 for the purpose of forming a local leno weave 12.
- These local leno weaves 12 hold in place the warp threads of the conventional weave 13 arranged therebetween.
- strips 14, where no warp threads are present and the weft threads 8 thus lie loosely.
- a very open backing 2 is thus created.
- the different steps of the method for manufacturing the artificial turf mat according to the invention are shown in Fig. 7.
- the method starts with providing warp threads 7 (step 100) and weft threads 8 (step 101).
- the warp threads (7) and/or the weft threads 8, or at least some of these threads, can here be embodied as melting threads.
- the warp and weft threads 7, 8 or some of these threads can also be embodied as shrinking yarns and/or spiral yarns.
- step 102 the warp and weft threads 7, 8 are interwoven by making use of a leno weaving technique, wherein the warp threads 7 are intertwined.
- step 103 the artificial grass blades 3 can then be connected to the woven backing 2. Since the artificial grass blades 3 are here connected to backing 2 by weaving, the steps 102 and 103 in fact coincide, as shown schematically by the dotted block l02a.
- a secondary backing 4 can optionally be connected to the leno weave backing 2 (step 104). This step is optional and could be skipped.
- Secondary backing 4 can be glued to primary backing 2, but it is also possible to envisage these backs 2, 4 being connected to each other by for instance double weaving or any other type of connecting technique.
- a secondary backing 4 which, as stated, could be
- a backing which functions as protective layer during heating and which can be manufactured from a biodegradable material.
- This backing can also be connected to the other backings in different ways.
- the artificial turf mat 1 formed in the foregoing steps is fixated by being heated.
- the melting threads will here partially melt, whereby welded connections are formed with the surrounding threads, also including the pile threads forming the artificial grass blades 3.
- the heating can take place by radiation, for instance infrared radiation, or by guiding artificial turf mat 1 over a heated roller.
- the additional backing is especially important in this latter case.
- artificial turf mat 1 is wound onto a roll (step 106) and is ready to be transported to a location where an artificial turf field 11 has to be installed.
- the artificial turf field 11 formed using the above described artificial turf mat 1 comprises in conventional manner a ground surface 5 on which the backing 2 (in the shown example with the secondary backing 4 thereunder) is placed.
- the artificial grass blades 3 protrude above the backing 2 on the upper side T.
- the space between the artificial grass blades 3 can then be filled with a filler material or“infill” 6, which ensures on the one hand that the artificial grass blades are supported and in addition serves for resilience and damping. Rubber granules, cork and other materials, generally in combination with sand, are suitable as filler material 6.
- the ground surface 5 can be seeded with grass seed (not shown here) prior to artificial turf mat 1 being laid. It is also possible to envisage the grass seed being sown in the layer of filler material 6 when this filler layer 6 comprises a natural material in which the grass can grow.
- the invention thus provides an artificial turf mat which is lighter and cheaper than existing artificial turf mats, and is easier to handle.
- the artificial turf mat according to the invention further has greatly improved mechanical properties, while in addition enabling a better drainage and ventilation than existing artificial turf mats.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Woven Fabrics (AREA)
- Carpets (AREA)
- Road Paving Structures (AREA)
- Multicomponent Fibers (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18839747.5A EP3710637A1 (en) | 2017-11-13 | 2018-11-13 | Artificial turf mat and method for manufacture thereof |
CN201880080566.6A CN111819330B (en) | 2017-11-13 | 2018-11-13 | Artificial turf mat and method for manufacturing an artificial turf mat |
CA3082562A CA3082562A1 (en) | 2017-11-13 | 2018-11-13 | Artificial turf mat and method for manufacture thereof |
JP2020545211A JP7374914B2 (en) | 2017-11-13 | 2018-11-13 | Artificial grass mat and its manufacturing method |
US16/763,627 US20200283965A1 (en) | 2017-11-13 | 2018-11-13 | Artificial turf mat and method for manufacture thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2019893A NL2019893B1 (en) | 2017-11-13 | 2017-11-13 | Artificial turf and method for manufacturing thereof |
NL2019893 | 2017-11-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2019093900A1 WO2019093900A1 (en) | 2019-05-16 |
WO2019093900A9 true WO2019093900A9 (en) | 2019-11-28 |
Family
ID=60451152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL2018/050760 WO2019093900A1 (en) | 2017-11-13 | 2018-11-13 | Artificial turf mat and method for manufacture thereof |
Country Status (7)
Country | Link |
---|---|
US (1) | US20200283965A1 (en) |
EP (1) | EP3710637A1 (en) |
JP (1) | JP7374914B2 (en) |
CN (1) | CN111819330B (en) |
CA (1) | CA3082562A1 (en) |
NL (1) | NL2019893B1 (en) |
WO (1) | WO2019093900A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH718764B1 (en) * | 2021-06-24 | 2023-09-29 | Flexgrass Sagl | Hybrid turf. |
CN114013127B (en) * | 2022-01-06 | 2022-04-29 | 天津工业大学 | Non-woven fabric reinforced composite material and preparation method thereof |
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US484537A (en) * | 1892-10-18 | Arthur e | ||
US1513885A (en) * | 1924-04-11 | 1924-11-04 | Godfrey S Bloch | Textile fabric and method of fabricating the same |
US2355789A (en) * | 1941-12-30 | 1944-08-15 | Benjamin S Faber | Method of making fabric |
GB780978A (en) * | 1954-04-06 | 1957-08-14 | British Belting & Asbestos Ltd | Improvements in packing or lagging material, in bolted joints using such material, and in a method of forming such joints |
JPS58115502U (en) * | 1982-01-26 | 1983-08-06 | 泉株式会社 | artificial lawn |
DE3729267A1 (en) * | 1987-01-29 | 1988-08-11 | Adolff J F Ag | METHOD FOR PRODUCING A SPORTS PLACE PLASTIC GRASS TRACK |
JPH05214660A (en) * | 1992-02-03 | 1993-08-24 | Mitsubishi Yuka Badische Co Ltd | Carpet for spread laying |
NL1004656C2 (en) * | 1996-11-29 | 1998-07-02 | Hugo De Vries | Combination lawn. |
JP3093683B2 (en) * | 1997-02-13 | 2000-10-03 | 静岡濾布有限会社 | Pile fabric and method for producing the same |
JP3418334B2 (en) * | 1998-04-14 | 2003-06-23 | 萩原工業株式会社 | Base cloth for artificial grass |
GB9819288D0 (en) * | 1998-09-04 | 1998-10-28 | Don & Low Ltd | Improvements in or relating to woven products |
JP2001214407A (en) | 2000-02-01 | 2001-08-07 | Sumitomo Rubber Ind Ltd | Artificial lawn containing natural lawn and method for laying the lawn |
JP3626389B2 (en) * | 2000-02-29 | 2005-03-09 | Ykk株式会社 | Hook-and-loop fastener |
KR200261531Y1 (en) * | 2001-08-16 | 2002-01-24 | 김여일 | Golf Exercising Mat with Double Artificial Grass Face |
US20030099787A1 (en) * | 2001-10-23 | 2003-05-29 | Fink Wilbert E. | Sports surface |
JP2004143637A (en) | 2002-10-25 | 2004-05-20 | Diatex Co Ltd | Tufting mat made of thermoplastic resin and method for producing the same |
ES2366539T3 (en) * | 2002-12-19 | 2011-10-21 | Greenfields B.V. | ARTIFICIAL LAWN COVER AND METHOD FOR MANUFACTURING THE SAME. |
JP2005015972A (en) * | 2003-06-27 | 2005-01-20 | Diatex Co Ltd | Base fabric for durable artificial turf and artificial turf |
NL1028626C2 (en) * | 2005-03-24 | 2006-09-27 | Heek Scholco Entpr B V Van | Method and device for manufacturing artificial grass. |
CN101484641A (en) * | 2006-06-02 | 2009-07-15 | 昙卡赛尔巴克有限公司 | Systems and methods for providing an improved artificial grass system |
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EP3316739A4 (en) * | 2015-07-01 | 2019-01-30 | Shaw Industries Group, Inc. | Carpet with fluid barrier properties |
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-
2017
- 2017-11-13 NL NL2019893A patent/NL2019893B1/en active
-
2018
- 2018-11-13 EP EP18839747.5A patent/EP3710637A1/en active Pending
- 2018-11-13 CN CN201880080566.6A patent/CN111819330B/en active Active
- 2018-11-13 JP JP2020545211A patent/JP7374914B2/en active Active
- 2018-11-13 CA CA3082562A patent/CA3082562A1/en active Pending
- 2018-11-13 WO PCT/NL2018/050760 patent/WO2019093900A1/en active Search and Examination
- 2018-11-13 US US16/763,627 patent/US20200283965A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN111819330A (en) | 2020-10-23 |
CN111819330B (en) | 2023-08-08 |
CA3082562A1 (en) | 2019-05-16 |
NL2019893B1 (en) | 2019-05-17 |
WO2019093900A1 (en) | 2019-05-16 |
JP7374914B2 (en) | 2023-11-07 |
US20200283965A1 (en) | 2020-09-10 |
EP3710637A1 (en) | 2020-09-23 |
JP2021502510A (en) | 2021-01-28 |
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