CN106858822A - Lower resistance protective mask - Google Patents
Lower resistance protective mask Download PDFInfo
- Publication number
- CN106858822A CN106858822A CN201710097773.XA CN201710097773A CN106858822A CN 106858822 A CN106858822 A CN 106858822A CN 201710097773 A CN201710097773 A CN 201710097773A CN 106858822 A CN106858822 A CN 106858822A
- Authority
- CN
- China
- Prior art keywords
- body portion
- valve
- mask
- gill formula
- mask body
- 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
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Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1161—Means for fastening to the user's head
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
Abstract
The invention discloses a kind of lower resistance protective mask.The invention discloses a kind of protective mask, it has mask body portion and frenulum portion.The mask body portion part such as including sealing ring, gill formula breather valve, decorative layer, filter layer, supporting layer, supporter, inner liner, nose clip, pressure nose frenulum.Gill formula breather valve is one-way ventilating valve, is mainly made up of base, one or more layers valve, lid, and breather valve is opened during expiration, gas discharge, and breather valve is closed during air-breathing.Sealing ring has flap valve structure, it is ensured that the one-way flow of gas.Filter layer uses folded profile, can greatly increase effectively filtration area.The protective mask has the advantages that respiratory resistance is small, gas leakage is few, good, attractive in appearance filtration effect, health, wear it is convenient.
Description
Technical field
The present invention relates to a kind of mouth mask.Specifically, but not to limit mode, the present invention relates to a kind of with filtering function
Protective mask.
Background technology
The progress of science and technology allows seriousness that people endanger PM2.5, generality to have more in depth to recognize.There is research table
The increase of bright PM2.5 concentration can increase the incidence of disease of tumour particularly lung cancer.And prevent that PM2.5 is inhaled into it is most effective, most
Simple method is exactly to wear masks.With the enhancing of people's health consciousness, the use scope of mouth mask is more and more extensive, frequency of use
Also more and more higher.It is known that in the heavier environment of air pollution, we should wear masks, the suction of harmful substance is reduced
Enter.Existing laws and regulations also clear stipulaties, in the workplace of hospital, food production workshop and dust high, mouth mask be doctor,
Nurse and the indispensable protective articles of staff.
However, under many circumstances, we can often see staff or pedestrian without mouth mask.Understanding you in depth can send out
Existing, they are not it is also known that the benefit for wearing masks, they are that they do not fear disease without the main cause of mouth mask, but existing
There is following weak point in mouth mask：1. the people of wearing frame eyeglasses is most afraid of to wear masks, because mouth mask conventional at present is excessively soft
Soft, mouth mask is substantially expanded during expiration, and air is discharged by the hole in the space between mouth mask edge and face and filtration material,
Water smoke can be on the ophthalmic lens formed, sight line is blocked；2. wearing masks can increase respiratory resistance, air-breathing is become difficult, always
People, child and respiratory disease patient are most afraid of this point；3. existing common mouth mask, or in order to reduce respiratory resistance,
And increase the hole of filtering material, but so harmful substance cannot be filtered out effectively, or in order to improve harmful substance
Filter effect, and the hole of filtering material is reduced, but so respiratory resistance will be increased substantially.4. the temperature of characteristics of contaminated respiratory droplets it is high,
The gas of high humidity, during being discharged through filtered material hole, runs into the relatively low filtration material of temperature, can condense into small water
Pearl, becomes moist through mouth mask, can not only increase respiratory resistance, it is often more important that its effect for intercepting germ is substantially reduced, and can also
Breed bacteria, generation peculiar smell, it is unfavorable to health on the contrary；5. in air-breathing, many mouth masks can occur certain deformation, or even collapse
Fall into, be close to mouth and nose, enable and produce effective filtration area of filtration to be substantially reduced（It is about as much as near mouth and nose not by mouth mask
The scope being close to）, people can feel that air-breathing is laborious, now, the increase inspiratory force that people can can't help, it is desirable to suck more
Air, but increase inspiratory force result be：It is more serious that negative pressure higher causes that mouth mask is collapsed, and effectively filtration area enters
One step diminishes, and inspiratory resistance is bigger, when this exactly wears masks, firmly breathes, and more feels the reason for having difficulty in breathing；6. existing
Mouth mask in, certain structures are simple, the mouth mask of good appearance, and side sealing effectiveness is not good, and gas leakage is more, filtering out harmful matter
Effect is poor；7. those good seal performances, good filtration effect Respirator structure it is very complicated, some mouth masks are somewhat like gas mask, outward
Shape unsightly, wears inconvenience.Exactly because above reason, many people want to wear masks, but are unwilling to wear masks.
So, at present, we need badly it is a kind of breathe it is smooth, healthy it is comfortable, wear convenience, good appearance, good airproof performance
Mouth mask.
The content of the invention
The purpose of the disclosure is to provide a kind of low respiratory resistance protective mask of fish gill formula, with respiratory resistance is small, sealing
Good, gas leakage is few, filtration effect is good, be difficult breed bacteria, wear conveniently, attractive in appearance, health the characteristics of.
The disclosure may include one or more following characteristics：The low respiratory resistance protective mask of fish gill formula includes mask body
Portion and frenulum portion.Described mask body portion include sealing ring, gill formula breather valve, decorative layer, filter layer, supporting layer, supporter,
The parts such as inner liner, nose clip, pressure nose frenulum.
The mask body portion is the spatial configuration for meeting ergonomics, and left and right two ends height is smaller, and intermediate altitude is larger, on
Lower edge is arc prominent to upper and lower respectively.The middle part in mask body portion protrudes forward, forms arcuate in shape, and periphery can be with
The shape of face is tightly fitted, and central portion can retain certain space at mouth and nose again, and a cavity is formed between face.
The mask body portion is broadly divided into 4 layers from outside to inside：The decorative cover bed of material, filter layer, supporting layer, inner liner.
The decorative cover bed of material is located at outermost layer, using macrovoid fabric, covers filter layer, can need to improve mouth mask according to different
Outward appearance.
At least one of which filtering material is included in filter layer, can be common fabric, non-woven fabrics, filter paper, activated carbon, animal
Hair or other types of material in one or more.Filter layer uses bellows-folded profile, can greatly increase effective filtration face
Product.The direction of folding can be horizontally oriented, transverse direction or diagonal direction.Filter layer can also be the collapsed shape of other manner.
Supporting layer in filter layer inner face, supporting layer uses macropore gap material, aeration resistance is small, with certain hardness and
Toughness, on the one hand can prevent the filter layer laminating tension for folding, and filter layer on the other hand can be prevented to be close to face, so exist
Can retain effectively filtration area with significantly more efficient during breathing.
Have at least one supporter in supporting layer, supporter uses arc, spirality, netted or other structures shape,
Supporter has consistency and elasticity higher, and Main Function is that mask body portion collapses when avoiding air-breathing, and is close to face, is led
Effective Respiratory area is caused to reduce.
The inner face of supporting layer is inner liner, using moistureproof antibacterial, soft comfortable, good permeability, can be direct with human body skin
The fabric of contact, it is therefore intended that improve the comfort level worn.
The upper limb in mask body portion has nose clip.Nose clip is located at the inside or surface of mouth mask body portion upper limb.Nose clip is strip
Shape, using metal material or other materials, can as needed carry out bending deformation easily, make the shape of mask body portion upper limb
The need for shape can meet different nasal contours.
With pressure nose frenulum before the upper limb in mask body portion.The two ends of nose frenulum are pressed to be connected to mask body portion upper limb
Two ends, are fixed on the middle part of mask body portion upper limb in the middle part of pressure nose frenulum, pressure nose frenulum uses elastomeric material or other materials.
When wearing, the pulling force effect at oblique rear in nose clip, is made more stepping up for mask body portion upper limb and skin attachement by pressure nose frenulum
It is close, the generation of top gas leakage when can effectively reduce expiration.
The medial surface at mask body portion edge has sealing ring, mask body portion edge is brought into close contact with face.Mouthful
Cover body portion can have two or more sealing ring in a part of sections near edge.Part or all of sealing ring
Sections has one layer oblique or two-layer flap valve.The direction of travel of flap valve root and the sides aligned parallel in mask body portion.In air-breathing
When flap valve be close to face, prevent filtered air to be inhaled into, exhale when, part flap valve can be outwardly opened, and be conducive to
Gas is discharged.Sealing ring using silica gel or other can be with the flexible material of human body skin directly contact.
One or more gill formula breather valves are installed in mask body portion.Gill formula breather valve is located in mask body portion
Between, one or both sides.Gill formula breather valve is one-way ventilating valve.The profile of breather valve be the similar fish gill arc, or
" ︹ " shape, " shape such as ［ " shape, " ＜ " shape.Above-mentioned gill formula breather valve is main to be made up of base, one or more layers valve, lid.It is above-mentioned
The two ends of valve and lid are separately fixed at the two ends of base, and fixed mode is adhered fixed using gluing or hinge is fixed so that
Lid and valve can carry out coaxial folding and rotate.The outer rim of above-mentioned base is closely coupled with mask body portion.Above-mentioned lid it is interior
Edge is closely coupled with mask body portion.The valve and lid of gill formula breather valve have the elastic strength for approaching to turn off, in non-expiration
It is kept closed.During expiration, the air pressure of mouth mask inner face is more than the air pressure outside mouth mask, in the presence of inner and outer air pressure difference, the gill
The valve and lid of formula breather valve are outwardly opened, and channel opener, gas is smoothly discharged through valve orifice；During air-breathing, mouth mask inner face
Air pressure the valve of gill formula breather valve and is covered and is adjacent to bottom under inner and outer air pressure difference and natural resiliency effect less than the air pressure outside mouth mask
Seat, gill formula breather valve is closed, and prevents air from entering, and after rush passes air through effective filtering of filter layer, could be sucked by human body.
Valve is made by one or more flexible material.Additionally, the deformation of the material can be elastic deformation relatively.At it
In the case of it, deformation can be plastic deformation.It is thereby possible to select material causes that a kind of material is suitable relative to another material
Answering property forms the sealing of anti-fluid sealing or substantially anti-fluid.
The mouth mask frenulum portion is connected to the two ends of lower edge in mask body portion, is that ear-wearing type, wear-type or neck wear formula, is used to
Fixed mask body portion.Frenulum used by frenulum portion is using elasticity or non-elastic material.
Brief description of the drawings：
The details that one or more of the disclosure are implemented is set forth in the following drawings and description.Other features, objects and advantages will
From description and accompanying drawing, and from claim obviously.
Fig. 1 is the outside view of mouth mask.
Fig. 2 is the interior view of mouth mask.
Fig. 3 is the horizontal sectional view of mask body portion upper limb.
Fig. 4 is the vertical cross-section figure in the middle part of mask body portion.
Fig. 5 is the horizontal sectional view in the middle part of mask body portion（During expiration）.
Fig. 6 is the horizontal sectional view in the middle part of mask body portion（During air-breathing）.
Fig. 7 is the sectional view of gill formula breather valve.
Specific embodiment
Fig. 1 shows the outside view of mouth mask 100.Mouth mask 100 includes mask body portion 101 and frenulum portion 102.Frenulum portion
102 two ends for being attached to lower edge in mask body portion 101.Frenulum portion 102 wears formula for ear-wearing type, wear-type or neck, is used to fix
Mask body portion 101.Frenulum portion 102 is using elasticity or non-elastic material.
One or more gill formula breather valves 113 are installed in mask body portion 101.Gill formula breather valve 113 is located at mouth mask sheet
The centre in body portion 101, one or both sides.
The upper limb 103 in mask body portion 101 has nose clip 104.Nose clip 104 is located at the inside or surface of upper limb 103.Nose clip
104 is strip, using metal material or other materials, deformation can be as needed bent easily, makes the shape of upper limb 103
The need for different nasal contours can be met.Upper limb 103 is above with pressure nose frenulum 105.Pressure nose frenulum right-hand member 117 and pressure nose system
Band left end 118 is connected to mouth mask upper limb right-hand member 119 and mouth mask upper limb left end 120, and mouth is fixed at the middle part of pressure nose frenulum 105
Cover upper limb middle part 121.
Fig. 2 shows the interior view of mouth mask 100.The medial surface in proximal edge area of mask body portion 101 has sealing ring
106, sealing ring 106 can be brought into close contact with face.Mask body portion 101 near edge a part of sections can have two or
More than two sealing rings 106.
Fig. 3 shows the horizontal sectional view of the upper limb 103 in mask body portion 101.Pressure nose frenulum 105 using elastomeric material or
Other materials.When wearing, the pulling force effect at oblique rear in nose clip 104, is made upper limb 103 and sealing ring 106 by pressure nose frenulum 105
Upper section sections it is even closer with skin attachement, the generation of top gas leakage when can effectively reduce expiration.
Fig. 4 shows the vertical cross-section figure at the middle part of mask body portion 101.Part or all of sections tool of sealing ring 106
There is one layer oblique or two-layer flap valve 107.The direction of travel of the root of flap valve 107 is parallel with the direction of travel of sealing ring 106.Inhaling
Flap valve 107 is close to face during gas, prevents filtered air to be inhaled into, and when exhaling, part flap valve 107 can outwards be beaten
Open, be conducive to gas to discharge.Sealing ring 106 and flap valve 107 using silica gel or other can be with the softness of human body skin directly contact
Material.
Mask body portion 101 has the decorative cover bed of material 108, filter layer 109, supporting layer 110, inner liner 111 from outside to inside.
The decorative cover bed of material 108 is located at outermost layer, using macrovoid fabric, covers filter layer 109, can need to improve outside mouth mask according to different
See.Filter layer 109 include at least one of which filtering material, can be common fabric, non-woven fabrics, filter paper, activated carbon, animal wool or
One or more in other types of material.Filter layer 109 uses bellows-folded profile, can greatly increase effective filtration face
Product.The direction of folding can be horizontally oriented, vertical direction or diagonal direction.In different embodiments, filter layer 109 can also be adopted
Folded profile otherwise.It is supporting layer 110 in the inner face of filter layer 109.Supporting layer 110 uses macropore gap material, ventilation
Resistance is small, with certain hardness and toughness, on the one hand can prevent the laminating tension of filter layer 109 for folding, and on the other hand may be used
To prevent filter layer 109 to be close to face, effectively filtration area can be retained with significantly more efficient so in breathing.Supporting layer 110
Inside has at least one supporter 112.Supporter 112 is using arc, spirality, netted or other structures shape, supporter 112
There is consistency and elasticity higher, Main Function is that mask body portion 101 collapses when avoiding air-breathing, and is close to face, is caused
Effective Respiratory area reduces.The inner face of supporting layer 110 is inner liner 111, using moistureproof antibacterial, soft comfortable, good permeability, can
With the fabric of human body skin directly contact, it is therefore intended that improve the comfort level worn.
Fig. 5, Fig. 6 show the horizontal sectional view at the middle part of mask body portion 101.Fig. 7 shows cuing open for gill formula breather valve 113
View.Gill formula breather valve 113 is one-way ventilating valve.The profile of gill formula breather valve 113 be the similar fish gill arc, or
" ︹ " shape, " shape such as ［ " shape, " ＜ " shape or shape of a hoof.Above-mentioned gill formula breather valve 113 is main by base 114, valve 115, lid 116
Constitute.The two ends of valve 115 and lid 116 are separately fixed on the base two ends 122,123 of base 114, and fixed mode is used
Gluing is adhered fixed or hinge is fixed so that lid 116 and valve 115 can carry out coaxial folding and rotate.The outer rim of base 114
It is closely coupled with mask body portion 101.The inner edge of lid 116 is closely coupled with mask body portion 101.Valve 115 and lid 116 have
The elastic strength for approaching to turn off, is kept closed in non-expiration.During expiration, the air pressure of the inner face of mask body portion 101 is more than
The air pressure of the outside of mask body portion 101, in the presence of inner and outer air pressure difference, valve 115 and lid 116 are outwardly opened, channel opener,
Gas is open through gill formula breather valve 113 and smoothly discharge；During air-breathing, the air pressure of the inner face of mask body portion 101 is less than mask body portion
The air pressure of 101 outsides, valve 115 and lid 116 are close to base 114, the ventilation of gill formula under inner and outer air pressure difference and natural resiliency effect
Valve 113 is closed, and prevents air from entering, and after rush passes air through effective filtering of filter layer 109, could be sucked by human body.Valve
115 are made by one or more flexible material.
The scope of the present disclosure is not intended to limit or is defined in above-mentioned details and illustrated examples described here.Cause
This, can make deviation in the case of the inventive concept without departing from applicant from these details.
Claims (7)
1. a kind of low respiratory resistance mouth mask of fish gill formula, including mask body portion, gill formula breather valve and frenulum portion, it is characterised in that：
Described frenulum portion is attached to the two ends of lower edge in mask body portion, and gill formula breather valve, mouth mask sheet are provided with mask body portion
Body portion includes the decorative cover bed of material, the filter layer, supporting layer, inner liner, the sealing ring that fold, and the upper limb in mask body portion is with pressure
Nose frenulum and nose clip.
2. the low respiratory resistance mouth mask of fish gill formula according to claim 1, wherein the gill formula breather valve includes base, valve
And lid, the two ends of valve and lid are separately fixed at the two ends of base.
3. gill formula breather valve according to claim 2, wherein the lid and valve can carry out coaxial folding rotate, and
There is certain elastic strength for approaching to turn off, be kept closed in non-expiration, form unidirectional anti-fluid sealing.
4. the low respiratory resistance mouth mask of fish gill formula according to claim 1, wherein the sealing ring is attached to mask body portion
The inner surface at edge, the sealing ring has oblique soft flap valve.
5. the low respiratory resistance mouth mask of fish gill formula according to claim 1, wherein the two ends of the pressure nose frenulum are connected to mouth
The middle part of mask body portion upper limb is fixed at the two ends of cover body portion upper limb, its middle part.
6. the low respiratory resistance mouth mask of fish gill formula according to claim 1, wherein the filter layer uses folded profile, in it
Face is close to supporting layer.
7. the low respiratory resistance mouth mask of fish gill formula according to claim 1, wherein higher hard with having in the supporting layer
The supporter of degree and elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097773.XA CN106858822A (en) | 2017-02-22 | 2017-02-22 | Lower resistance protective mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097773.XA CN106858822A (en) | 2017-02-22 | 2017-02-22 | Lower resistance protective mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106858822A true CN106858822A (en) | 2017-06-20 |
Family
ID=59167755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710097773.XA Pending CN106858822A (en) | 2017-02-22 | 2017-02-22 | Lower resistance protective mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106858822A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158598A (en) * | 2017-06-23 | 2017-09-15 | 三六三医院 | Self-powered mouth mask |
| CN107485082A (en) * | 2017-10-10 | 2017-12-19 | 安徽淝上人家餐饮管理有限公司 | A kind of dining mask |
| CN111317897A (en) * | 2020-03-20 | 2020-06-23 | 徐栋梁 | Infectious disease isolation and killing system for respiratory system |
| CN111329148A (en) * | 2020-03-18 | 2020-06-26 | 青海省药品检验检测院 | High-tightness mask |
| CN111513393A (en) * | 2020-05-14 | 2020-08-11 | 深圳市中医院 | Foldable mask and folding method thereof |
| CN111616441A (en) * | 2020-06-03 | 2020-09-04 | 常州大学 | Mask |
| CN112075685A (en) * | 2020-09-01 | 2020-12-15 | 吴莹旭 | Gauze mask filtration |
| TWI725923B (en) * | 2020-10-13 | 2021-04-21 | 謝東宏 | Face mask |
| WO2022082367A1 (en) * | 2020-10-19 | 2022-04-28 | 谢东宏 | Mask |
| CN115227994A (en) * | 2022-08-22 | 2022-10-25 | 王睿 | Colliery is individual safety equipment in pit |
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| CN201119436Y (en) * | 2007-12-05 | 2008-09-24 | 中国纺织科学研究院 | Disposable dust-proof mask |
| CN201436866U (en) * | 2009-05-11 | 2010-04-14 | 黄凯华 | Mouth-muffle |
| CN203873053U (en) * | 2014-06-10 | 2014-10-15 | 武汉龙飞翔科技产品制造有限公司 | Mask with e-PTFE microporous membranes |
| CN204617126U (en) * | 2015-03-31 | 2015-09-09 | 裴国增 | A kind of novel height deters mouth mask |
| US20160213957A1 (en) * | 2015-01-26 | 2016-07-28 | Lu Xu | Breathing Mask |
| CN106730458A (en) * | 2017-02-27 | 2017-05-31 | 康景安 | Folding and retractable type air-purifying mask and its production method |
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| CN201119436Y (en) * | 2007-12-05 | 2008-09-24 | 中国纺织科学研究院 | Disposable dust-proof mask |
| CN201436866U (en) * | 2009-05-11 | 2010-04-14 | 黄凯华 | Mouth-muffle |
| CN203873053U (en) * | 2014-06-10 | 2014-10-15 | 武汉龙飞翔科技产品制造有限公司 | Mask with e-PTFE microporous membranes |
| US20160213957A1 (en) * | 2015-01-26 | 2016-07-28 | Lu Xu | Breathing Mask |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158598A (en) * | 2017-06-23 | 2017-09-15 | 三六三医院 | Self-powered mouth mask |
| CN107485082A (en) * | 2017-10-10 | 2017-12-19 | 安徽淝上人家餐饮管理有限公司 | A kind of dining mask |
| CN111329148A (en) * | 2020-03-18 | 2020-06-26 | 青海省药品检验检测院 | High-tightness mask |
| CN111329148B (en) * | 2020-03-18 | 2022-01-07 | 青海省药品检验检测院 | High-tightness mask |
| CN111317897A (en) * | 2020-03-20 | 2020-06-23 | 徐栋梁 | Infectious disease isolation and killing system for respiratory system |
| CN111513393A (en) * | 2020-05-14 | 2020-08-11 | 深圳市中医院 | Foldable mask and folding method thereof |
| CN111616441A (en) * | 2020-06-03 | 2020-09-04 | 常州大学 | Mask |
| CN112075685A (en) * | 2020-09-01 | 2020-12-15 | 吴莹旭 | Gauze mask filtration |
| TWI725923B (en) * | 2020-10-13 | 2021-04-21 | 謝東宏 | Face mask |
| WO2022082367A1 (en) * | 2020-10-19 | 2022-04-28 | 谢东宏 | Mask |
| CN115227994A (en) * | 2022-08-22 | 2022-10-25 | 王睿 | Colliery is individual safety equipment in pit |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |
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| WD01 | Invention patent application deemed withdrawn after publication |