CN103342969A - Printed circuit board (PCB) shading tape and preparation method thereof - Google Patents
Printed circuit board (PCB) shading tape and preparation method thereof Download PDFInfo
- Publication number
- CN103342969A CN103342969A CN2013102858084A CN201310285808A CN103342969A CN 103342969 A CN103342969 A CN 103342969A CN 2013102858084 A CN2013102858084 A CN 2013102858084A CN 201310285808 A CN201310285808 A CN 201310285808A CN 103342969 A CN103342969 A CN 103342969A
- Authority
- CN
- China
- Prior art keywords
- main body
- material main
- pcb board
- rubber belt
- shading rubber
- 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
Links
Images
Abstract
The invention discloses a printed circuit board (PCB) shading tape and a preparation method thereof, and belongs to the technical field of an electronic product shading tape. The PCB shading tape comprises a base material body, wherein a release layer is combined at the surface of one side of the base material body; a bonding layer is combined at the surface of the other side of the base material body. The PCB shading tape has the characteristics that the bonding layer comprises a bottom coating and an adhesive layer; the bottom coating is combined at the surface of the other side of the base material body while the adhesive layer is combined at the surface of the bottom coating; the base material body is a polyvinyl chloride film. By adopting the printed circuit board shading tape, the bonding effect with the PCB can be obviously improved; the phenomena of tilting at two ends and coated glue are avoided; the situation that a pony roll is folded outwards or curled inwards is not generated; thepreparation method has the advantages of being simple in processing step, and unharsh in technological requirements, so as to meet the requirements of amplification of industrialized production; the technical effects of the PCB shading tape can be fully reflected.
Description
Technical field
The invention belongs to electronic product shading rubber belt technical field, be specifically related to a kind of pcb board shading rubber belt, and relate to its preparation method.
Background technology
Above mentioned PCB is the abbreviation of English full name (Printed Circuit Board), Chinese is: " printed circuit board " (also claiming printed circuit board (PCB) or printed-wiring board (PWB)), be the important electron parts, being carrier or the title supporter of electronic devices and components, more precisely is the supplier that electronic devices and components are electrically connected.
As is known in the industry, (exposure is to stick dry film to use the egative film contraposition again under certain temperature, pressure the exposure imaging operation in the production process of pcb board, at last utilize the irradiation of UV-light that the uncovered dry film of egative film is reacted at exposure machine, form required wiring diagram at the space of a whole page.), and before this exposure process, need be covered the place that do not need to develop by shading rubber belt, this covers and is aforesaid shading, and the purpose of shading is to utilize the irradiation of UV-light that the uncovered dry film of egative film is reacted at exposure machine, forms required wiring diagram at the space of a whole page.
Generally use in the prior art PET film (poly-terephthalyl alcohol glycol ester film) as the shading rubber belt of base material to the pcb board shading.Technical intelligence about shading rubber belt can be seen in Chinese patent literature, slightly with exemplify as: CN101245226A(novel shading rubber belt), the CN202626083U(shading rubber belt), CN202808680U(is used for the adhesive tape of liquid-crystal display module), CN202808683U(is used for the shading reflection tape of electronic product) and CN202808684U(use for electronic products shading double sticky tape), etc.Although these patent information that are not limited to exemplify mainly are covering at the light leak of the backlight of electronic product such as liquid-crystal display etc., but with the pcb board shading rubber belt similarity on technology, structure and the function is arranged, typical in CN202626083U, because the shading rubber belt that this patent is recommended also can be used for to a certain extent to the shading in the pcb board manufacturing processed.
Adopt the PET film substrate to form industry common recognition sanctified by usage for a long time as the pcb board shading rubber belt, no matter and be in disclosed patent and non-patent literature or in pcb board production firm, to there is no all and/or hear of and adopt other film substrate as the information of PCB shading rubber belt up to now.
Along with people harsh day by day to the electronic product quality, thereby the pcb board to the supporter role that taking on electronic devices and components has also proposed more strict requirement, and to ensure the quality of pcb board, must be to the strict control of all links in the pcb board production process, in the exposure imaging operation of for example mentioning in front, if shading rubber belt exist such as distortion, wrinkling, upwarp, carry the situation the glue (tackiness agent residues on the pcb board), so undoubtedly can influence the quality of PCB, cause scrapping when serious.
Though yet aforesaid PET base material or title PET film have good mechanical performance, heat aging property, electrical insulation properties and weather resistance etc., but because PET belongs to the cellulosic substrates category, therefore significantly stiff for the non-cellulose base material, so be difficult to ensure with the stickup affinity effect of pcb board, for example after pasting on the PCB, tend to occur two ends towards the situation of the direction perk that deviates from pcb board.Again, be prone to the phenomenon of outside turnup or inside roll set when the adhesive tape body is put on display from coiling, outwards the phenomenon of turnup is by shown in Figure 2, and material main body 1 is curled towards the back side of self, even generation is sticking also; Inwardly the phenomenon of roll set as shown in Figure 3, material main body 1 is curled towards the front of self, in addition produce sticking also.No matter be outwards or inwardly to curl, all can influence result of use, especially in case occur stickingly also then can causing waste (will turn the removal of part and crimping portion usually in use), and have a strong impact on pcb board in conjunction with effect.
In addition, since known pcb board shading rubber belt usually at a side surface of the PET of black base material in conjunction with release layer, and at opposite side surface bonding adhesive layer, therefore serious year glue phenomenon can appear when it pastes on the pcb board and removes in subsequent handling, adhesive layer residual (transfer) namely appears to pcb board, and can be by the 0004th section in specification sheets and 0012 section confirmation of aforementioned CN202626083U to this.
In view of above-mentioned prior art, be necessary to be improved, for this reason, the applicant does long-term and good try, finally formed technical scheme described below, and taked to have carried out experiment repeatedly in the applicant plant area under the strict secrecy provision, it is practicable that the result proves.
Summary of the invention
Top priority of the present invention be to provide a kind of help significantly to improve to use with the bonding effect of pcb board avoid the two ends perk, be conducive to prevent that the adhesive tape body from occurring outwards turning or inwardly curl and use and avoid waste and ensure result of use and be of value to the pcb board shading rubber belt of stopping to carry the glue phenomenon and using the quality that ensures pcb board coiling.
Another task of the present invention is to provide a kind of preparation method of pcb board shading rubber belt, this method processing step is brief and technical factor is not harsh and have be convenient to satisfy industrial amplification production require and can make the pcb board shading rubber belt that obtains embody all sidedly alice not, wrinkle resistant, do not turn up, not involute and do not carry the technique effect of glue.
For top priority of the present invention is finished in embodiment, technical scheme provided by the invention is: a kind of pcb board shading rubber belt, comprise material main body, side surface in this material main body is combined with release layer, and in the opposite side surface bonding of material main body tack coat is arranged, and being characterised in that described tack coat comprises undercoat and adhesive layer, undercoat is combined in the described opposite side surface of described material main body, and adhesive layer is combined in the surface of undercoat, and described material main body is polyvinyl chloride film.
In a specific embodiment of the present invention, the thickness of described material main body is 40-60 μ m.
In another specific embodiment of the present invention, described release layer is that thickness is the silicon release layer of 1-2 μ m.
In another specific embodiment of the present invention, the thickness of described undercoat is 2-3 μ m.
In another specific embodiment of the present invention, the thickness of described adhesive layer is 5-8 μ m.
Also have in the specific embodiment of the present invention, described adhesive layer is that the raw material by following parts by weight constitutes: acrylic glue 68-72 part, vinyl acetic monomer 15-25 part and opalizer 8-12 part.
Finish another task of the present invention for embodiment, technical scheme provided by the invention is: a kind of preparation method of pcb board shading rubber belt may further comprise the steps:
A) choose base material and to the base material pre-treatment, choose flawless polyvinyl chloride film as material main body, and corona treatment is carried out on a side and the opposite side surface of material main body, obtain pretreated material main body;
B) coating, to by steps A) side surface coating release layer of the pretreated material main body that obtains, then to the opposite side surface coated of material main body as the undercoat that constitutes tack coat, and introduce baking oven under the state of limit coating, the gait of march of control temperature of oven and material main body, go out behind the baking oven surface coated at described undercoat as the adhesive layer that constitutes tack coat, under the state of coating adhesive layer, introduce drying tunnel, and the row of control drying tunnel temperature and material main body moves speed, go out rolling behind the drying tunnel, cut, obtain the pcb board shading rubber belt of coil shape.
More of the present invention and in specific embodiment, steps A) the corona value of corona treatment is the 40-50 dyne described in.
In of the present invention and then specific embodiment, step B) the control temperature of oven described in is that temperature of oven is controlled to be: temperature in 75-85 ℃, and temperature out 68-72 ℃; The gait of march of described control material main body is that gait of march is controlled to be 50-60m/min; Described control drying tunnel temperature is that high two was low in the middle of the temperature with a district to five of drying tunnel district was controlled to be, and the row speed of moving of described control material main body is that row is moved speed control is 75-85m/min.
Of the present invention again more and in specific embodiment, in the middle of described being controlled to be high two low be that the temperature that a described district to five distinguishes is controlled to be respectively; 68-72 ℃ of one district 68-72 ℃, two district 73-77 ℃, three district 78-82 ℃, four district 73-77 ℃ He Wu district.
Technical scheme provided by the invention since the tack coat that material main body has been adopted polyvinyl chloride film and will be incorporated into material main body constituted by undercoat and adhesive layer, thereby not only can significantly improve bonding effect with pcb board, avoid the two ends perk and carry the glue phenomenon, and can not coil the situation that appearance outwards turns or inwardly curls; The preparation method who provides has that processing step is brief, the not harsh strong point of processing requirement and satisfied the industrial amplification production requirement, and can ensure comprehensive embodiment of the aforementioned techniques effect of pcb board shading rubber belt.
Description of drawings
Fig. 1 is the example structure figure of pcb board shading rubber belt of the present invention.
Fig. 2 coils the synoptic diagram that outside turnup phenomenon occurs for the PCB shading rubber belt in the prior art has.
Fig. 3 is coiling the synoptic diagram that inwardly curling phenomenon occurs for the PCB shading rubber belt in the prior art.
Embodiment
Embodiment 1:
Ask for an interview Fig. 1, the step of pcb board shading rubber belt for preparing this structure shown in Figure 1 is as follows:
A) choose base material and to the base material pre-treatment, the polyvinyl chloride film that choose indefectible for example free of pinholes, do not have brilliant point, the damage of no scratching and non-wrinkled and thickness that planeness is good is 50 μ m is as material main body 1, corona treatment is carried out on one side of material main body 1 and the opposite side both sides of material main body 1 (namely to) surface, the corona value of corona treatment is 40 dyne, obtains pretreated material main body 1;
B) coating, to by steps A) side surface of the pretreated material main body 1 that obtains (this side surface is under the use state side surface back to pcb board) is that the release layer 11(of 1.5 μ m is the silicon parting agent layer with the roll coating model coating thickness), then the opposite side surface to material main body 1 is coated with as the undercoat 121 that constitutes tack coat 12 with roll coating model, and under the state of limit coating material main body 1 is introduced oven for drying with the gait of march of 50m/min, the temperature in of baking oven is 80 ℃, temperature out is 70 ℃, be coated with as the adhesive layer 122 that constitutes tack coat 12 with roll coating model on the surface of described undercoat 121 after going out baking oven, and under the coating state, introduce the drying tunnel oven dry equally, the row speed of moving of material main body 1 is 85m/min, the temperature in one district to five district of drying tunnel is that middle high two is low, specifically: 70 ℃ ℃ in a district, 75 ℃ in two districts, 80 ℃ in three districts, 75 ℃ in four districts, 70 ℃ in five districts, go out rolling behind the drying tunnel, cut, obtain the pcb board shading rubber belt by the coil shape shown in Fig. 1.In this step, the thickness of aforesaid undercoat 121 is 2 μ m, and the thickness of aforesaid adhesive layer 122 is 6 μ m, and, undercoat 121 preferably but not use definitely that produce and the trade mark that widely sold in market is the PVC-2A auxiliary agent by new Shen, Chinese Guangdong province Shenzhen chemical assistant company limited before the application proposes with being limited to, adhesive layer 122 is made of the raw material of following parts by weight: 10 parts of 68 parts in acrylic glue, 25 parts of vinyl acetic monomers and opalizers.Acrylic glue is the common name of acrylic acid or the like and methacrylic glue, and acrylic glue is solvent-based adhesive, has the fast strong point of adhering speed.In the present embodiment, acrylic glue select use produced by Chinese Shanghai state optical cement stick company limited and the application proposes before the trade mark at the market public offering be the GE-PPAP tackiness agent, the opalizer in the present embodiment preferably use by the production of the long-range optics auxiliary agent of Jiangsu Province, China Changzhou limited liability company and before the application proposes the trade mark at the market public offering be LT-1300 film opalizer.
Embodiment 2:
Only with steps A) in the thickness of material main body 1 change 60 μ m into, change the corona value into 50 dyne; With step B) in the thickness of release layer 11 change 2 μ m into, change the thickness of undercoat 121 into 2.5 μ m, change the thickness of adhesive layer 122 into 8 μ m, and will constitute adhesive layer 122 raw materials and parts by weight thereof changes into: 72 parts in acrylic glue, 12 parts of 15 parts of vinyl acetic monomers and opalizers, the speed that material main body 1 is introduced baking oven changes 60m/min into, baking oven entrance and exit temperature changes 75 ℃ and 68 ℃ respectively into, change the row speed of moving in drying tunnel of material main body 1 into 75m/min, the temperature in the district to five in powder road district is changed into respectively: 68 ℃ in a district, 73 ℃ in two districts, 78 ℃ in three districts, 68 ℃ in 73 ℃ of He Wu districts, four districts.All the other are all with the description to embodiment 1.
Embodiment 3:
Only with steps A) in the thickness of material main body 1 change 40 μ m into, change the corona value into 45 dyne; With step B) in the thickness of release layer 11 change 1 μ m into, change the thickness of undercoat 121 into 3 μ m, change the thickness of adhesive layer 122 into 5 μ m, and will constitute adhesive layer 122 raw materials and parts by weight thereof changes into: 70 parts in acrylic glue, 8 parts of 20 parts of vinyl acetic monomers and opalizers, the speed that material main body 1 is introduced baking oven changes 55m/min into, baking oven entrance and exit temperature changes 85 ℃ and 72 ℃ respectively into, change the row speed of moving in drying tunnel of material main body 1 into 80m/min, the temperature in the district to five in powder road district is changed into respectively: 72 ℃ in a district, 77 ℃ in two districts, 82 ℃ in three districts, 72 ℃ in 77 ℃ of He Wu districts, four districts.All the other are all with the description to embodiment 1.
Claims (10)
1. pcb board shading rubber belt, comprise material main body (1), side surface in this material main body (1) is combined with release layer (11), and in the opposite side surface bonding of material main body (1) tack coat (12) is arranged, it is characterized in that described tack coat (12) comprises undercoat (121) and adhesive layer (122), undercoat (121) is combined in the described opposite side surface of described material main body (1), and adhesive layer (122) is combined in the surface of undercoat (121), and described material main body (1) is polyvinyl chloride film.
2. pcb board shading rubber belt according to claim 1, the thickness that it is characterized in that described material main body (1) is 40-60 μ m.
3. pcb board shading rubber belt according to claim 1 is characterized in that described release layer (11) is the silicon release layer of 1-2 μ m for thickness.
4. pcb board shading rubber belt according to claim 1, the thickness that it is characterized in that described undercoat (121) is 2-3 μ m.
5. pcb board shading rubber belt according to claim 1, the thickness that it is characterized in that described adhesive layer (122) is 5-8 μ m.
6. pcb board shading rubber belt according to claim 1 or 5 is characterized in that described adhesive layer (122) is that raw material by following parts by weight constitutes: acrylic glue 68-72 part, vinyl acetic monomer 15-25 part and opalizer 8-12 part.
7. the preparation method of a pcb board shading rubber belt as claimed in claim 1 is characterized in that may further comprise the steps:
A) choose base material and to the base material pre-treatment, choose flawless polyvinyl chloride film as material main body (1), and corona treatment is carried out on a side and the opposite side surface of material main body (1), obtain pretreated material main body (1);
B) coating, to by steps A) side surface coating release layer (11) of the pretreated material main body (1) that obtains, then to the opposite side surface coated of material main body (1) as the undercoat (121) that constitutes tack coat (12), and introduce baking oven under the state of limit coating, the gait of march of control temperature of oven and material main body (1), go out behind the baking oven surface coated at described undercoat (121) as the adhesive layer (122) that constitutes tack coat (12), under the state of coating adhesive layer (122), introduce drying tunnel, and the row of control drying tunnel temperature and material main body (1) moves speed, go out rolling behind the drying tunnel, cut, obtain the pcb board shading rubber belt of coil shape.
8. the preparation method of pcb board shading rubber belt according to claim 7 is characterized in that steps A) described in the corona value of corona treatment be the 40-50 dyne.
9. the preparation method of pcb board shading rubber belt according to claim 7 is characterized in that step B) described in the control temperature of oven be that temperature of oven is controlled to be: temperature in 75-85 ℃, temperature out 68-72 ℃; The gait of march of described control material main body (1) is that gait of march is controlled to be 50-60m/min; Described control drying tunnel temperature is that high two was low in the middle of the temperature with a district to five of drying tunnel district was controlled to be, and the row speed of moving of described control material main body (1) is that row is moved speed control is 75-85m/min.
10. the preparation method of pcb board shading rubber belt according to claim 7, it is characterized in that in the middle of described being controlled to be high two low be that the temperature that a described district to five distinguishes is controlled to be respectively; 68-72 ℃ of one district 68-72 ℃, two district 73-77 ℃, three district 78-82 ℃, four district 73-77 ℃ He Wu district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102858084A CN103342969A (en) | 2013-07-09 | 2013-07-09 | Printed circuit board (PCB) shading tape and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102858084A CN103342969A (en) | 2013-07-09 | 2013-07-09 | Printed circuit board (PCB) shading tape and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103342969A true CN103342969A (en) | 2013-10-09 |
Family
ID=49277800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102858084A Pending CN103342969A (en) | 2013-07-09 | 2013-07-09 | Printed circuit board (PCB) shading tape and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103342969A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010300A (en) * | 2011-09-09 | 2013-04-03 | 操纵技术Ip控股公司 | Inertia compensation with frequency dependent damping |
| CN104629640A (en) * | 2015-02-13 | 2015-05-20 | 厦门新旺新材料科技有限公司 | High temperature resistant release adhesive tape as well as preparation method and use of adhesive tape |
| CN106811143A (en) * | 2015-12-01 | 2017-06-09 | 宁德新能源科技有限公司 | Structure gummed paper |
| CN108059930A (en) * | 2017-12-21 | 2018-05-22 | 四川东材科技集团股份有限公司 | A kind of preparation method of ultra-thin exhaust masking tape/glued membrane |
| CN113061399A (en) * | 2021-03-31 | 2021-07-02 | 万洲胶粘制品(江苏)有限公司 | PVC baking varnish adhesive tape for metal baking varnish vehicle and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6435556A (en) * | 1987-07-31 | 1989-02-06 | Somar Corp | Light shielding masking film |
| CN102149780A (en) * | 2008-12-18 | 2011-08-10 | 德莎欧洲公司 | Masking strip with a PVC film |
| CN202626083U (en) * | 2012-03-31 | 2012-12-26 | 常州宏巨电子科技有限公司 | Shading adhesive tape |
| CN202794763U (en) * | 2012-05-22 | 2013-03-13 | 北京京东方光电科技有限公司 | Shading strip and backlight source and display device |
-
2013
- 2013-07-09 CN CN2013102858084A patent/CN103342969A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6435556A (en) * | 1987-07-31 | 1989-02-06 | Somar Corp | Light shielding masking film |
| CN102149780A (en) * | 2008-12-18 | 2011-08-10 | 德莎欧洲公司 | Masking strip with a PVC film |
| CN202626083U (en) * | 2012-03-31 | 2012-12-26 | 常州宏巨电子科技有限公司 | Shading adhesive tape |
| CN202794763U (en) * | 2012-05-22 | 2013-03-13 | 北京京东方光电科技有限公司 | Shading strip and backlight source and display device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010300A (en) * | 2011-09-09 | 2013-04-03 | 操纵技术Ip控股公司 | Inertia compensation with frequency dependent damping |
| CN103010300B (en) * | 2011-09-09 | 2015-12-09 | 操纵技术Ip控股公司 | The control system of servo steering system and method |
| CN104629640A (en) * | 2015-02-13 | 2015-05-20 | 厦门新旺新材料科技有限公司 | High temperature resistant release adhesive tape as well as preparation method and use of adhesive tape |
| CN106811143A (en) * | 2015-12-01 | 2017-06-09 | 宁德新能源科技有限公司 | Structure gummed paper |
| CN108059930A (en) * | 2017-12-21 | 2018-05-22 | 四川东材科技集团股份有限公司 | A kind of preparation method of ultra-thin exhaust masking tape/glued membrane |
| CN113061399A (en) * | 2021-03-31 | 2021-07-02 | 万洲胶粘制品(江苏)有限公司 | PVC baking varnish adhesive tape for metal baking varnish vehicle and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103342969A (en) | Printed circuit board (PCB) shading tape and preparation method thereof | |
| CN107517552A (en) | A kind of diaphragm for cover plate and preparation method thereof | |
| CN203502934U (en) | Touch panel | |
| WO2020134462A1 (en) | Glass soft film structure and production method therefor | |
| CN101792644A (en) | Heat bonding film | |
| WO2020134458A1 (en) | Glass soft film structure and manufacturing method therefor | |
| WO2017179463A1 (en) | Structure, electronic equipment, decoration film, and method for manufacturing structure | |
| CN203930740U (en) | Curved surface touch-control shows module and wearable device | |
| CN109659333A (en) | Antireflection blocks water oxygen component and its manufacturing method, flexible display device | |
| CN104149505A (en) | Manufacturing method of holographic anti-counterfeiting repeated transfer film | |
| CN203805452U (en) | Transfer-type thin film composite metal film production equipment | |
| TWI507288B (en) | Metal thin film transfer material and process therefor | |
| CN103847217A (en) | Method for compounding metal membrane by transfer-type film as well as production equipment thereof | |
| CN108807474A (en) | Display module and preparation method thereof, display device | |
| CN105242799B (en) | Curved surface touch-control display module and wearable device | |
| CN203110468U (en) | Release film with light release force | |
| CN103985433A (en) | Carbon nano-tube conductive thin film and manufacturing method thereof | |
| CN212581798U (en) | Anti-dazzle protective film for curved surface mobile phone | |
| CN106471448A (en) | Duplexer, the manufacture method of duplexer, capacitance type contact panel and image display device | |
| CN107526459A (en) | The preparation method that touch screen function is realized using full silver paste pattern printing processing procedure | |
| CN105161220B (en) | A kind of preparation method of the silver-colored conductive film of high temperature resistant | |
| CN114020171A (en) | Manufacturing method of metal sensing electrode structure, touch display device and mobile terminal | |
| CN104559817B (en) | Use for electronic products protection pad pasting | |
| CN205553459U (en) | High temperature resistant no substrate AB glue protection film | |
| CN106189892A (en) | Transparent and electrically conductive film surface protection film and use the transparent and electrically conductive film of this surface protection film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131009 |