CN103155313B - Spark plug - Google Patents

Spark plug Download PDF

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Publication number
CN103155313B
CN103155313B CN201080069506.8A CN201080069506A CN103155313B CN 103155313 B CN103155313 B CN 103155313B CN 201080069506 A CN201080069506 A CN 201080069506A CN 103155313 B CN103155313 B CN 103155313B
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CN
China
Prior art keywords
peripheral electrode
electrode
spark plug
central
distal
Prior art date
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Active
Application number
CN201080069506.8A
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Chinese (zh)
Other versions
CN103155313A (en
Inventor
佩里·D·马丁
克里斯托弗·J·威瑟斯庞
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.)
Vomar Tech Inc
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Vomar Tech Inc
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Publication date
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Publication of CN103155313A publication Critical patent/CN103155313A/en
Application granted granted Critical
Publication of CN103155313B publication Critical patent/CN103155313B/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00Sparking plugs
    • H01T13/20Sparking plugs characterised by features of the electrodes or insulation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00Sparking plugs
    • H01T13/46Sparking plugs having two or more spark gaps
    • H01T13/467Sparking plugs having two or more spark gaps in parallel connection
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00Sparking plugs
    • H01T13/20Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/32Sparking plugs characterised by features of the electrodes or insulation characterised by features of the earthed electrode
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00Sparking plugs
    • H01T13/52Sparking plugs characterised by a discharge along a surface

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  • Spark Plugs (AREA)

Abstract

A kind of spark plug (10) has a central electrode (12) and multiple peripheral electrode 14.Each peripheral electrode (14) has a bottom (25) and a top (26).Each top (26) has a most distal point (28).Each most distal point (28) is positioned in a central plane (30), and the longitudinal axis (20) of the distal portions (18) of this central electrode (12) is placed in this central plane by whole.Cross section along each top (26) that its central plane (30) intercepts limits inside a convex side (32) and a non-convex surface (34).Each convex side (33) has a curved surface (36), this curved surface and multiple tangent plane (38) tangent, all these tangent planes distal end (22) place of the remote point of this central electrode (12) or the some place of top crossing with the longitudinal axis (30) of the distal portions (18) of this central electrode (12).

Description

Spark plug
the cross reference of related application
This application claims the provisional application Ser.No 61/215 that the title submitted on May 4th, 2009 is " the ion gun spark plug (ION GUN SPARK PLUG FOR INTERNAL COMBUSTIONENGINES) for internal combustion engine ", the rights and interests of 329, and the title requiring on May 3rd, 2010 to submit to is the U.S. Patent Application No. 12/772 of " spark plug (SPARK PLUG) ", the priority of 680, these two applications are combined in this in full with it by reference.
Invention field
Present invention relates in general to the spark plug for internal combustion engine.
background of invention
For internal combustion engine spark plug knew by people a century.Although in the meantime spark plug be designed with significant improvement, but still continue to need will improve the performance of engine further and be expected to reduce the spark plug of fuel consumption.
Eager especially in racing car industry to the demand of the spark plug producing the engine performance improved, even if the improvement that wherein engine performance is slight and/or the slight reduction of engine fuel consumption quantity all can mean victory and negative difference.
summary of the invention
Present invention accomplishes this demand.The present invention is a kind of spark plug, comprise: (a) central electrode, this central electrode has a proximal part and a distal portions, this distal portions has the circular cross-section of a band longitudinal axis and stops in a distal end, (b) multiple peripheral electrode, each peripheral electrode has a bottom with a top and shape and size are substantially identical, each top has a most distal point, each most distal point is positioned in a central plane, the longitudinal axis of the distal portions of this central electrode is placed in this central plane by whole, cross section along each top of its center planar interception limits inside a convex side and a non-convex surface, each convex side has a curved surface tangent with multiple tangent plane, all these tangent planes the distal end place of the remote point of this central electrode or above some place and the longitudinal axis of distal portions of this central electrode.
Accompanying drawing explanation
By reference to following description, accessory claim and accompanying drawing these and other features, aspect and the advantage that the present invention may be better understood, wherein:
Fig. 1 is the perspective view of a kind of spark plug with features more of the present invention;
Fig. 2 is the plane graph of the one end of the spark plug shown in Fig. 1;
Fig. 3 B is the sectional view of the spark plug that the 3-3 along the line shown in Fig. 2 intercepts;
Fig. 3 A is another sectional view of the spark plug that the 3-3 along the line shown in Fig. 2 intercepts;
Fig. 4 A is the schematic diagram of first bottom of a peripheral electrode available in the present invention;
Fig. 4 B is the schematic diagram of second bottom of a peripheral electrode available in the present invention;
Fig. 4 C is the schematic diagram of the 3rd bottom of a peripheral electrode available in the present invention;
Fig. 4 D is the schematic diagram of the 4th bottom of a peripheral electrode available in the present invention;
Fig. 4 E is the schematic diagram of the 5th bottom of a peripheral electrode available in the present invention;
Fig. 4 F is the schematic diagram of the 6th bottom of a peripheral electrode available in the present invention;
Fig. 4 G is the schematic diagram of the 7th bottom of a peripheral electrode available in the present invention;
Fig. 4 H is the schematic diagram of the 8th bottom of a peripheral electrode available in the present invention;
Fig. 4 I is the end view of the bottom of the peripheral electrode of showing in Fig. 4 H;
Fig. 4 J is the schematic diagram of the 9th bottom of a peripheral electrode available in the present invention;
Fig. 4 K is the end view of the bottom of the peripheral electrode of showing in Fig. 4 J;
Fig. 4 L is the schematic diagram of the tenth bottom of a peripheral electrode available in the present invention;
Fig. 4 M is the end view of the bottom of the peripheral electrode of showing in Fig. 4 L;
Fig. 4 N is the opposite side view of the bottom of peripheral electrode in Fig. 4 L.
describe in detail
The several changes describing one embodiment of the present of invention and this embodiment in detail are below discussed.But this discussion should not be construed as and limit the invention to these specific embodiments.Those of ordinary skill in the art also will recognize other embodiments several.
As used herein, except context requires in addition, term " comprises " and is not intended to repel that other add, composition, overall or step.Therefore, run through this specification, except context requires in addition, word " to comprise " etc. with the adversative meaning that comprises of repulsion, namely to include but not limited to that the meaning of feeding is explained.
Described by the accompanying drawings, overall dimension specified in this disclosure only as an example and be not intended to restriction.And, need not be to scale in these ratios shown in the drawings.As will by those of ordinary skill in the art with reference to this disclosure understand, the actual size of any device disclosed in this disclosure or the part of device will be determined according to its planned use.
The present invention is a kind of spark plug 10 for internal combustion engine, and this spark plug can provide outstanding performance.This spark plug 10 comprises a central electrode 12 and multiple peripheral electrode 14.The present invention is illustrated in Fig. 1 to Fig. 3.
This central electrode 12 has a proximal part 16 and a distal portions 18.This distal portions 18 has the circular cross-section of a band longitudinal axis 20.This distal portions 18 stops at distal end 22 place.In one embodiment, the distal end 22 of this central electrode 12 is cheese, to reach a kind of consistent thick obtuse.For the ease of manufacturing, this central electrode 12 is the same with typical spark plug is cylindrical.
In a preferred embodiment, the diameter of this distal portions 18 is between about 0.125 inch and about 0.265 inch.The diameter of this distal portions 18 is than about 2 to 3 times of the diameter in a typical spark plug.Due to several reasons, this central electrode 12 has been exaggerated.One of them object is in order to spark is stablized.Electrode storage after this amplification more multi-energy, makes to discharge more electric power during spark event thus.Second object during light-off period, causes lasting, ion motion fast, even if this motion also there will not be fault under high combustion pressure, as racing engine.
The plurality of peripheral electrode 14 around this central electrode 12 by equidistant arrangement each other, thus limit a circle, wherein this central electrode 12 is placed in circle center.These peripheral electrode 14 are integrated with 24 one-tenth, a threaded base cylinder usually.In the embodiment of showing in the accompanying drawings, the plurality of peripheral electrode 14 is made up of 8 peripheral electrode 14.In any case, importantly peripheral electrode 14 quantity between about 3 and about 12.When the quantity of peripheral electrode 14 be less than 3 or be greater than 12 time, the performance of internal combustion engine can be greatly diminished.
The shape and size of each electrode in these peripheral electrode 14 are substantially identical.Each peripheral electrode 14 has a bottom 25 and a top 26.This top 26 has a most distal point 28.As depicted in figs. 1 and 2, the most distal point 28 of each electrode in these peripheral electrode 14 can be relatively sharp-pointed.But in other embodiments, the most distal point 28 of each electrode in these peripheral electrode 14 can be more round and smooth or smooth.
As shown in Figure 2, each most distal point 28 is positioned in a central plane 30, and the longitudinal axis 20 of the distal portions 18 of this central electrode 12 is placed in this central plane by whole.The cross section on each top 26 of each peripheral electrode 14 intercepted along its central plane 30 to limit inside a convex side 32 and a non-convex surface 34.
As shown in Figure 3 B, each convex side 32 has a curved surface 36, this curved surface and multiple tangent plane 38 tangent, all these tangent planes 38 distal end 22 place of this central electrode 12 remote point or above some place crossing with the longitudinal axis 20 of the distal portions 18 of this central electrode 12.In an exemplary embodiment, the curved surface 36 of this convex side 32 is level and smooth, is not preferably interrupted.
Fig. 3 A illustrates and another sectional view duplicate shown in Fig. 3 B, except 34 flat sections 37 that restriction one is little near most distal point 28 inside this.
According to above-mentioned design, the plurality of peripheral electrode 14 is similar by the fork curving a ring with one, and its sharp head is inwardly encircleed curved thus pointed to this central electrode 12.
Again as shown in Figure 3, by one deck bakelite 40 or other suitable insulators, these peripheral electrode 14 are insulated with this central electrode 12.
As shown in Fig. 4 A to Fig. 4 M, these peripheral electrode 14 can be configured to various shape.Fig. 4 A illustrates the cross sectional shape that has a bottom 25 for the peripheral electrode 14 of square sectional generally.Fig. 4 B illustrates the bottom 25 that has the peripheral electrode 14 of a population moment tee section.Fig. 4 C illustrates the bottom 25 that has an overall oval peripheral electrode 14.Fig. 4 D illustrates the bottom 25 that has the peripheral electrode 14 of an overall circular.Fig. 4 E illustrates one and has an overall oval but bottom 25 for peripheral electrode 14 with multiple fillet.Fig. 4 F illustrates one and has an overall rectangle but the bottom 25 of peripheral electrode 14 with multiple fillet.Fig. 4 G illustrates the bottom 25 that has the peripheral electrode 14 in an overall triangular cross section.
Fig. 4 H and Fig. 4 I illustrates the top 26 that one has the peripheral electrode 14 of an off-centre operation cone shape.Fig. 4 J and Fig. 4 K illustrates the top 26 that one has the peripheral electrode 14 of another kind of off-centre operation cone shape.
Fig. 4 L and Fig. 4 M illustrates the top 26 that one has the peripheral electrode 14 in an overall smooth inner side 34 and an outside 32, its middle section intercepts along its central plane 30, inside this, 34 have an overall smooth surface, and 32 have an arc-shaped surface outside this.
Fig. 4 N illustrates the cross section on another top 26 of the peripheral electrode 14 shown in Fig. 4 L, wherein, and 34 indents a little inside this.
Typically, the distance between the most distal point 28 of each electrode in these peripheral electrode 14 and spaced apart about 0.04 inch to about 0.095 inch of this central electrode 12, is typically between about 0.05 inch to about 0.07 inch most.
According to the unique design of the spark plug 10 of the invention described above, fast ionic is caused to move by utilizing the excess energy discharged from an incendiary source, ion motion mixes with the air inlet/fuel oil in combustion chamber, and this spark plug 10 can provide the engine performance of improvement, comprises and souping and moment of torsion.Before igniting, in spark event process and in combustion process, a burst of anion is mixed in the air oil in combustion chamber.By discharging more potential energy and slowing down Actual combustion event, this burst of ion changes the burning feature of fuel oil.This phenomenon is similar with the octane number improving fuel oil.During ignition event, ion is cooling these tips.This event usually forms Rapid Circulation stream around this central electrode.
This phenomenon also has another advantage, and namely spark plug of the present invention does not need to be designed to one of a lot of concrete Heat range.For great majority application, only require a Heat range.By contrast, for conventional ignition plug, require nearly 20 kinds of different designs, an a kind of corresponding different Heat range.
According to the design of these peripheral electrode in the present invention, anion is separated from the electric charge that coil flows out.These ions are advanced along the periphery of these negative electrodes, and the curve along these peripheral electrode forms momentum, concentrates on this distal portions, and then go out a paths towards this central electrode and advance for this spark plasma.When piston is when the top dead centre of compression/combustion stroke, combustion chamber just starts highly to be pressurizeed.Under this atmospheric pressure, spark plasma is exaggerated and splits, thus gives off a large amount of spark from these grounding electrodes.In high voltage test process, observe nearly three obvious highly charged spark kernels.
In spark event process and after spark event moment, this fast ionic moves and impacts this central electrode and launch to enter air/fuel electric charge, thus carries out high ionization to aforementioned electric charge.Like this, fully, thoroughly make use of the electric charge that coil provides.
The present invention occurs that another kind of phenomenon creates a pressure barrier in the cavity of these moving ions below this central electrode and between this insulator and inwall of this base shell in using.By carbon and partially combusted fuel and fuel oil separately, the inwall of this insulator of preventing pollution and this base shell, therefore avoids the short circuit that spark is potential to this pressure barrier.
After igniting, this fast ionic motion cooling flame leading edge, therefore slows combustion incident.This fast ionic motion process can cause the pressure duration on this top land of advancing to extend downwards.This fast ionic motion combustion process also ensure that burns, more thoroughly because this reducing the percentage of unburned hydrocarbon.
Another front benefit relevant to emission is that the cooling aspect that this fast ionic moves prevents NO xrise.This and conventional ignition plug are formed and contrast, and in conventional ignition plug, higher Heat range must be utilized to burn, and (and this higher Heat range will inevitably produce more NO to more hydrocarbon x).
Finally, design industry of the present invention also create a kind of very greatly and very stable spark, this spark can skip large spark gap and sustains high combustion pressure, therefore greatly reduces and catches fire.
example
A high-performance V-8 test engine is utilized again to make dynamometer machine chart.Utilize one independently facility carried out these test.Except changing spark plug, any change or change are not done to this engine.
Compared with the typical racing spark plug of a prior art, these captions spark plug of the present invention makes horsepower and moment of torsion be increased.
Example 1
In this example, this engine being used for testing is the Ford FE engine of 420 cubic inches, inside has a 850cfm Holly carburetor and 38 degree of speed governing.This deposit spark plug is Autolite3924 deposit plug, is arranged on the gap of .040 foot.These spark plugs of the present invention are for filling in by the Autolite3924 deposit improved shown in Fig. 1, and gap is .058 inch.
example 2
This engine being used for testing is the Ford engine of 812 cubic inches, inside has a 850cfm Holly carburetor and 38 degree of speed governing.This existing spark plug is that Autolite3924 lays in spark plug, is arranged on the gap of 0.45 foot.These spark plugs of the present invention are for filling in by the Autolite3924 deposit improved shown in Fig. 1, and gap is .062 inch.In example 2, all twice test is carried out to these spark plugs of the present invention.
After description the present invention like this, should be apparent that and can carry out many places structural modification and reorganization when not deviating from the category of the present invention and reasonable sense of setting forth hereinbefore and also being described by claim hereinafter.

Claims (15)

1. a spark plug, comprising:
(a) central electrode (12), this central electrode has a proximal part (16) and a distal portions (18), and this distal portions has the circular cross-section of a band longitudinal axis (20) and stops a distal end (22);
(b) multiple peripheral electrode (14), each peripheral electrode has a bottom (25) and a top (26) and has identical shape and size, each top has a most distal point (28), each most distal point is positioned in a central plane (30), the longitudinal axis (20) of the distal portions of this central electrode (12) is placed in this central plane by whole, cross section along each top (26) of its center planar interception limits inside a convex side and a non-curved, each convex side has a curved surface (36) tangent with multiple tangent plane (38),
It is characterized in that, the shape of the curved surface (36) of each convex side on the top (26) of each peripheral electrode (14) makes all described tangent planes limit a smooth part (37) near each most distal point (28) in distal end (22) place of the remote point of this central electrode or the some place of top and the inner side (34) of each peripheral electrode (14) crossing with the longitudinal axis (20) of the distal portions (18) of this central electrode (12).
2. spark plug according to claim 1, wherein, the distal portions (18) of this central electrode (12) has a diameter between 0.125 inch and 0.265 inch.
3. spark plug according to claim 1, wherein, this central electrode (12) has a distal end (22), and this distal end is dome-shaped.
4. spark plug according to claim 1, wherein, the quantity of the plurality of peripheral electrode (14) is between 3 and 12 peripheral electrode.
5. spark plug according to claim 1, wherein, the bottom (25) of each peripheral electrode in these peripheral electrode (14) has a square sectional.
6. spark plug according to claim 1, wherein, the bottom (25) of each peripheral electrode in these peripheral electrode (14) has a square-section.
7. spark plug according to claim 1, wherein, the bottom (25) of each peripheral electrode in these peripheral electrode (14) has an oval cross section.
8. spark plug according to claim 1, wherein, in these peripheral electrode, the bottom (25) of each peripheral electrode of (14) has a circular cross-section.
9. spark plug according to claim 1, wherein, the bottom (25) of each peripheral electrode in these peripheral electrode (14) has the foursquare cross section of a multiple fillet of band.
10. spark plug according to claim 1, wherein, the bottom (25) of each peripheral electrode in these peripheral electrode (14) has the cross section of the rectangle of a multiple fillet of band.
11. spark plugs according to claim 1, wherein, the bottom (25) of each peripheral electrode in these peripheral electrode (14) has the leg-of-mutton cross section of a multiple fillet of band.
12. spark plugs according to claim 1, wherein, the top (26) of each peripheral electrode in these peripheral electrode (14) has the shape of an off-centre operation cone.
13. spark plugs according to claim 1, wherein, this convex side (32) is level and smooth.
14. spark plugs according to claim 13, wherein, this convex side (32) forms a circular arc.
15. spark plugs according to claim 1, wherein, this central electrode (12) by an insulator (40) around.
CN201080069506.8A 2010-08-23 2010-08-23 Spark plug Active CN103155313B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2010/046386 WO2012026919A1 (en) 2010-08-23 2010-08-23 Spark plug

Publications (2)

Publication Number Publication Date
CN103155313A CN103155313A (en) 2013-06-12
CN103155313B true CN103155313B (en) 2015-09-23

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EP (1) EP2443711B1 (en)
JP (1) JP5600211B2 (en)
KR (1) KR101439801B1 (en)
CN (1) CN103155313B (en)
AU (1) AU2010359601C1 (en)
BR (1) BR112013003947B1 (en)
CA (1) CA2809015C (en)
DK (1) DK2443711T3 (en)
ES (1) ES2443956T3 (en)
HK (1) HK1163943A1 (en)
IL (1) IL224838A (en)
MX (1) MX2013002090A (en)
PL (1) PL2443711T3 (en)
PT (1) PT2443711E (en)
RU (1) RU2542351C2 (en)
WO (1) WO2012026919A1 (en)
ZA (1) ZA201302062B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131014A1 (en) * 2013-06-19 2014-12-20 Eldor Corp Spa IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1457812A (en) * 1973-03-19 1976-12-08 Hitachi Ltd Multi-gap type spark plug
US6362562B1 (en) * 1996-01-04 2002-03-26 Paul Rossi Top and side firing spark plug
CN2515843Y (en) * 2001-12-06 2002-10-09 唐志远 Arc multi-electrode sparking plug
US6583539B1 (en) * 1999-08-23 2003-06-24 Antonio Lopez Zamora Spark plug with center electrode and surrounding ground electrode

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US4439707A (en) * 1980-07-23 1984-03-27 Nippon Soken, Inc. Spark plug with a wide discharge gap
JP3589693B2 (en) * 1994-03-30 2004-11-17 日本特殊陶業株式会社 Spark plug
CZ282875B6 (en) * 1994-12-23 1997-11-12 BRISK Tábor a. s. Ignition plug
AU4845899A (en) * 1998-06-29 2000-01-17 Chris W. Witherspoon Corona wind spark plug
KR20030047417A (en) * 2001-12-10 2003-06-18 루이스 에스 카밀리 Current peaking sparkplug
JP2004022450A (en) * 2002-06-19 2004-01-22 Denso Corp Spark plug for internal combustion engine
JP2006085941A (en) * 2004-09-14 2006-03-30 Denso Corp Spark plug for internal combustion engine
KR20060030261A (en) * 2004-10-05 2006-04-10 현대자동차주식회사 Spark plug
JP4272682B2 (en) * 2006-10-30 2009-06-03 日本特殊陶業株式会社 Spark plug for internal combustion engine and method for manufacturing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1457812A (en) * 1973-03-19 1976-12-08 Hitachi Ltd Multi-gap type spark plug
US6362562B1 (en) * 1996-01-04 2002-03-26 Paul Rossi Top and side firing spark plug
US6583539B1 (en) * 1999-08-23 2003-06-24 Antonio Lopez Zamora Spark plug with center electrode and surrounding ground electrode
CN2515843Y (en) * 2001-12-06 2002-10-09 唐志远 Arc multi-electrode sparking plug

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Publication number Publication date
CA2809015C (en) 2016-02-09
WO2012026919A1 (en) 2012-03-01
KR20130062990A (en) 2013-06-13
MX2013002090A (en) 2013-12-02
RU2013110034A (en) 2014-09-27
AU2010359601C1 (en) 2015-11-12
ZA201302062B (en) 2014-02-26
KR101439801B1 (en) 2014-09-11
PL2443711T3 (en) 2014-04-30
RU2542351C2 (en) 2015-02-20
AU2010359601B2 (en) 2014-07-31
JP5600211B2 (en) 2014-10-01
BR112013003947B1 (en) 2024-01-09
ES2443956T3 (en) 2014-02-21
BR112013003947A2 (en) 2017-12-19
CN103155313A (en) 2013-06-12
PT2443711E (en) 2014-02-17
CA2809015A1 (en) 2012-03-01
EP2443711A1 (en) 2012-04-25
IL224838A (en) 2016-05-31
AU2010359601A1 (en) 2013-03-07
HK1163943A1 (en) 2012-09-14
DK2443711T3 (en) 2014-02-17
JP2013536558A (en) 2013-09-19
EP2443711B1 (en) 2013-11-20
EP2443711A4 (en) 2012-10-24

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