CN202226955U - High frequency coil for producing water-drop-shaped or bat-shaped combination drawing hole with six or seven silicon cores - Google Patents
High frequency coil for producing water-drop-shaped or bat-shaped combination drawing hole with six or seven silicon cores Download PDFInfo
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- CN202226955U CN202226955U CN 201120365569 CN201120365569U CN202226955U CN 202226955 U CN202226955 U CN 202226955U CN 201120365569 CN201120365569 CN 201120365569 CN 201120365569 U CN201120365569 U CN 201120365569U CN 202226955 U CN202226955 U CN 202226955U
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Abstract
A high frequency coil for producing a water-drop-shaped or bat-shaped combination drawing hole with six or seven silicon cores relates to a high frequency coil. Drawing holes or material holes (11) are arranged in the middle of the round high frequency coil (2), and six flow guiding grooves (12) are radially arranged on the drawing holes or the material holes. External ends of the six flow guiding grooves are arranged among the six drawing holes (7), drainage grooves (6) are respectively arranged on one sides of one to five of the six drawing holes facing the drawing holes or the material holes, V-shaped openings (16) are arranged on one sides of the other drawing holes facing the drawing holes or the material holes, and spaces are reserved between the end portions of the drainage grooves and the sharp ends of the V-shaped openings and the drawing holes or the material holes. Connection seats are respectively arranged at the outer ends of a water inlet pipeline (8) and a water outlet pipeline (13). The high frequency coil enables current of the drawing holes around the periphery to be evenly distributed around the drawing holes through the drainage grooves or the V-shaped openings, and the oval degree of the cylindrical crystal is effectively reduced.
Description
[technical field]
The utility model relates to the radio-frequency coil technical field, especially relates to a kind of radio-frequency coil of producing six or seven silicon core water droplet shapes and racket shape combination drawing hole.
[background technology]
At present, usage quantity is very huge at home for the silicon core; In the technological process that the molten mode in existing silicon core, silicon single crystal and other material crystals district is produced; What use mostly is a kind of monocular radio-frequency coil, and its principle of work is: through feeding high-frequency current to radio-frequency coil, make radio-frequency coil produce electric current fuel rod is carried out induction heating during work; Fuel rod upper end after the heating forms melt zone; Then that the son is brilliant in the melting area on the insertion fuel rod behind the drawing hole, slowly promote young crystalline substance then, the raw material after the fusing will be followed son's crystalline substance and risen; Form a new pillar-shaped crystal, this new pillar-shaped crystal is the finished product of silicon core or other material crystals.
I find through experiment repeatedly and since existing draw pore structure that layout is set is unreasonable, form the pillar-shaped crystal that draws out for oval, the ovality of pillar-shaped crystal not too meets the requirements; Especially when drawing the above silicon core of five or five, the oval phenomenon of pillar-shaped crystal is more obvious.
[summary of the invention]
In order to overcome the deficiency in the background technology; The utility model discloses a kind of radio-frequency coil of producing six or seven silicon core water droplet shapes and racket shape combination drawing hole; The utility model produce at the same time overcome in six or seven silicon cores peripheral around drawing hole outer side and medial surface temperature differ and cause the oval phenomenon of pillar-shaped crystal; Around inboard, drawing hole be provided with drainage trough form racket shape or around inboard " V " shape gap that is provided with in drawing hole form water droplet shape; Through drainage trough or " V " shape gap can make peripheral around drawing hole electric current be evenly distributed on and draw around the hole; Standard more when silicon core or other crystalline material being heated evenly draw through electric current, the ovality of pillar-shaped crystal effectively reduces, and the pillar-shaped crystal of obtaining more meets the requirements.
In order to realize the purpose of foregoing invention, the utility model adopts following technical scheme:
A kind of radio-frequency coil of producing six or seven silicon core water droplet shapes and racket shape combination drawing hole; Comprise radio-frequency coil, suction culvert, outlet pipeline, Connection Block and ground wire connection mechanism; The rounded structure of said radio-frequency coil; Be provided with downward concave face at the upper side of circular radio-frequency coil middle part, be provided with ring-shaped step upwards, cooling water channel is set in the outer most surrounding of radio-frequency coil at the bottom surfaces middle part of circular radio-frequency coil; Draw the hole or change the middle part that the material hole is arranged on circular radio-frequency coil; Draw the hole or change evenly be provided with on the outside radio-frequency coil in material hole six around the drawing hole, by drawing the hole or changing the material hole to being radial six diversion trenchs that are provided with, the external end head of said six diversion trenchs is arranged on six and draws between the holes; Said six draw holes wherein one to five be provided with drainage trough remaining be set to " V " shape gap towards drawing the hole or changing material hole one side towards drawing the hole or changing material hole one side, the tip of the end of said drainage trough and " V " shape gap with draw the hole or change the material hole and leave spacing; One of them of said six diversion trenchs is through the straight perforation tremendously high frequency of opening coil outer rim; The two ends of cooling water channel form suction culvert and outlet pipeline respectively in the both sides of opening; Suction culvert and outlet pipeline outer end are respectively equipped with Connection Block, are provided with ground wire connection mechanism in the outside of radio-frequency coil.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, are respectively equipped with stomidium at the external end head of said six diversion trenchs.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, and the stomidium that is provided with respectively at said six diversion trench external end heads is circle or polygon.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, and the end of said drainage trough is set to " V " shape angle or circular arc, and drainage trough is set to arc-shaped transition or angle transition with the end that is connected in drawing hole.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; The through hole of said suction culvert and outlet pipeline passes said Connection Block, is respectively equipped with open hole in both sides up and down at the suction culvert of said Connection Block and the through hole of outlet pipeline.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, and said Connection Block is polygon Connection Block or two semicircle Connection Block or oval Connection Block.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; In the radio-frequency coil outer most surrounding cooling water channel being set does; The outside upper ring surface of radio-frequency coil or outside subordinate's anchor ring or outer edge surface fluting, said cooling water channel ring is embedded in the radio-frequency coil; Or at the outer edge surface of radio-frequency coil through soldering or brazing or silver soldering welding cooling water channel, cooling water channel and radio-frequency coil are integrally formed.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, and six upper port places that draw holes are provided with annular chamfer, and said drawing hole or the upper port place that changes the material hole are provided with annular chamfer.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, and said opening is set to " U " shape opening or " V " shape opening or " " " shape opening or diagonal cut joint.
Described production six or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; Said ground wire connection mechanism; The outside upper ring surface of radio-frequency coil or down anchor ring or outer edge surface be provided with the ground wire web plate, or at the outside upper ring surface of radio-frequency coil or anchor ring or outer rim punching connect ground wire through screw down.
Owing to adopt technique scheme, the utlity model has following beneficial effect:
The described production six of the utility model or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; Produce at the same time overcome in six or seven silicon cores peripheral around drawing hole outer side and medial surface temperature differ and cause the oval phenomenon of pillar-shaped crystal; In the periphery around inboard, drawing hole drainage trough is set; Make that by the drainage trough guide current drawing the inboard electric current in hole reduces; Through drainage trough can make peripheral around drawing hole current temperature more be evenly distributed on and draw around the hole, standard more when silicon core or other crystalline material being heated evenly draw through electric current, the pillar-shaped crystal ovality of obtaining effectively reduces; More meet the requirements of the customers, yield rate increases substantially in producing six or seven silicon cores; The utility model improves capacity usage ratio, reduces production costs and reduces fraction defective and have homogeneous heating, a large amount of save energy, reduce advantages such as facility investment and artificial comprehensive cost can effectively reduce, and is easy in the promotion and implementation of polysilicon industry.
[description of drawings]
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the perspective view of Fig. 1.
Fig. 3 is the diagonal cut joint structural representation of Fig. 2.
Fig. 4 is another example structure synoptic diagram of the utility model opening.
Fig. 5 is the perspective view of Fig. 4.
Fig. 6 be Fig. 4 head straight for the mouth structure synoptic diagram.
Fig. 7 is opening " U " the shape example structure synoptic diagram of the utility model.
Fig. 8 is opening " V " the shape example structure synoptic diagram of the utility model.
Fig. 9 is the opening " " of the utility model " shape example structure synoptic diagram.
Figure 10 is the inner structural representation that " V " shape angle is set of the drawing hole drainage trough of the utility model.
Figure 11 is the structural representation that drainage trough the inner, drawing hole of the utility model is provided with circular arc.
Figure 12 is the perspective view that drainage trough the inner, drawing hole of the utility model is provided with the arc-shaped transition in dihedral outer end and drawing hole.
Figure 13 is the perspective view that drainage trough the inner, drawing hole of the utility model is provided with the arc-shaped transition in circular arc outer end and drawing hole.
Figure 14 is that the water droplet shape of the utility model draws the hole perspective view.
Figure 15 is the rectangle Connection Block perspective view of the utility model.
Figure 16 is the two semicircle Connection Block perspective view of the utility model.
Figure 17 is another embodiment perspective view of rectangle Connection Block of the utility model.
Figure 18 is that the diversion trench outer end of the utility model is set to square end pore structure synoptic diagram.
Figure 19 is that the diversion trench outer end of the utility model is set to semicircle stomidium structural representation.
Figure 20 is that the diversion trench outer end of the utility model is set to rhombus stomidium structural representation.
Figure 21 is that the diversion trench outer end of the utility model is set to round nose pore structure synoptic diagram.
Figure 22 is that the diversion trench outer end of the utility model is set to oval stomidium structural representation.
Figure 23 is that the diversion trench outer end of the utility model is set to trilateral stomidium structural representation.
In the drawings: 1, ground wire web plate; 2, radio-frequency coil; 3, annular chamfer; 4, stomidium; 5, draw the hole; 6, drainage trough; 7, opening; 8, suction culvert; 9, Connection Block; 10, downward concave face; 11, draw hole or change material hole; 12, diversion trench; 13, outlet pipeline; 14, step; 15, open hole; 16, " V " shape gap.
[embodiment]
Embodiment with reference to following can explain the utility model in more detail; But the utility model is not limited to these embodiment.
Draw the radio-frequency coil in hole in conjunction with the production six described in the accompanying drawing 1 to 6 or seven silicon core water droplet shapes and the combination of racket shape; Comprise radio-frequency coil 2, suction culvert 8, outlet pipeline 13, Connection Block 9 and ground wire connection mechanism; Said radio-frequency coil 2 rounded structures; Be provided with downward concave face 10 at the upper side of circular radio-frequency coil 2 middle part, be provided with ring-shaped step 14 upwards, cooling water channel is set in the outer most surrounding of radio-frequency coil 2 at the bottom surfaces middle part of circular radio-frequency coil 2; Draw the hole or change the middle part that material hole 11 is arranged on circular radio-frequency coil 2; Draw the hole or change evenly be provided with on the outside radio-frequency coil 2 in material hole 11 six around the drawing hole 5 that is provided with annular chamfer 3, by drawing the hole or changing material hole 11 to being radial six diversion trenchs 12 that are provided with, the external end head of said six diversion trenchs 12 is arranged on six and draws between the holes 5; In conjunction with accompanying drawing 18～23, be respectively equipped with circle or polygon stomidium 4 at the external end head of said six diversion trenchs 12; Said six draw holes 5 wherein one to five be provided with drainage trough 6 remaining be set to " V " shape gap 16 towards drawing the hole or changing material hole 11 1 sides towards drawing the hole or changing material hole 11 1 sides, the tip of the end of said drainage trough 6 and " V " shape gap 16 with draw the hole or change the material hole and leave spacing; In conjunction with the structure that provides in the accompanying drawing 10～13, the end of said drainage trough 6 is set to " V " shape angle or circular arc, and drainage trough 6 is set to arc-shaped transition or angle transition with the end that is connected that draws hole 5; In conjunction with the structure that provides in the accompanying drawing 14, the tip of " V " shape gap 16 is set to circular arc or pointed shape; One of them of said six diversion trenchs 12 is through opening 7 straight perforation tremendously high frequency coil 2 outer rims; The two ends of cooling water channel form suction culvert 8 and outlet pipeline 13 respectively in the both sides of opening 7; In radio-frequency coil 2 outer most surrounding cooling water channel being set does; The outside upper ring surface of radio-frequency coil 2 or outside subordinate's anchor ring or outer edge surface fluting, said cooling water channel ring is embedded in the radio-frequency coil 2; Or at the outer edge surface of radio-frequency coil 2 through soldering or brazing or silver soldering welding cooling water channel; Cooling water channel and radio-frequency coil 2 are integrally formed; Suction culvert 8 is respectively equipped with Connection Block 9 with outlet pipeline 13 outer ends; The through hole of said suction culvert 8 and outlet pipeline 13 passes said Connection Block 9; Being respectively equipped with open hole 15 in both sides up and down at the suction culvert 8 of said Connection Block 9 and the through hole of outlet pipeline 13, is polygon Connection Block 9 or two semicircle Connection Block 9 or oval Connection Block 9 in conjunction with accompanying drawing 15,16,17 said Connection Blocks 9, is provided with ground wire connection mechanism in the outside of radio-frequency coil 2; Said ground wire connection mechanism, the outside upper ring surface of radio-frequency coil 2 or down anchor ring or outer edge surface be provided with ground wire web plate 1, or at the outside upper ring surface of radio-frequency coil 2 or anchor ring or outer rim punching connect ground wire through screw down.
Be set to " U " shape or " V " shape or " " in conjunction with accompanying drawing 6,7,8,9 said openings 7 " diagonal cut joint 7 that provides in shape or the accompanying drawing 3, the preferred diagonal cut joint 7 of the utility model.
Implement the radio-frequency coil in the described production six of the utility model or seven silicon core water droplet shapes and racket shape combination drawing hole; Produce at the same time overcome in six or seven silicon cores peripheral around drawing hole 5 because the silicon core ellipse phenomenon that outer side and medial surface temperature differ and cause; In the periphery around 5 inboards, drawing hole drainage trough 6 or " V " shape gap 16 are set; Make that by drainage trough 6 or " V " shape gap 16 guide current drawing hole 5 inboard electric currents reduces; Through drainage trough 6 can make peripheral around drawing hole 5 current temperatures more be evenly distributed on and draw around the hole 5; Standard more when silicon core or other crystalline material being heated evenly draw through electric current, the pillar-shaped crystal of obtaining more meets the requirements of the customers; The utility model combines diversion trench 12 evenly to draw hole 5 operations around six under the shunting action of drainage trough 6 or " V " shape gap 16 when making the electric current operation through drainage trough 6 or " V " shape gap 16; Obtain comparatively reasonably electric current; And around electric current under the booster action of drainage trough 6 or " V " shape gap 16 more is evenly distributed in outside six drawing holes 5; Through experiment and test; Proved that the utility model improvement after-current can move around each drawing hole 5 that comprises drawing hole, middle part or change material hole 11 uniformly under the water conservancy diversion of radial diversion trench; Six draw in the hole around six draw the drawing hole at hole 5 and middle part or change the Heating temperature in material hole 11 basic identical; Realized electric current six draw holes around equally distributed purpose, the drawing hole at middle part or change also can be used as material hole, material hole 11 wherein, effect or only the heating raw clavate become the radio-frequency coil of production six silicon cores; Or the drawing hole at middle part or change material hole 11 also as drawing the hole, form the radio-frequency coil of producing seven silicon cores; The utility model improves capacity usage ratio, reduces production costs and reduces fraction defective and have homogeneous heating, a large amount of save energy, reduce advantages such as facility investment and artificial comprehensive cost can effectively reduce, and is easy in the promotion and implementation of polysilicon industry.
In conjunction with accompanying drawing 1,2,4 and 5, the radio-frequency coil use is described below: at first fuel rod is delivered to radio-frequency coil 2 bottoms, said radio-frequency coil 2 bottoms are step surface; Fuel rod is good more closely more apart from radio-frequency coil 2, but must not contact with radio-frequency coil 2, and water and outlet pipeline 13 energising drainings are sent in 8 energisings of the suction culvert on radio-frequency coil 2 then; Impel radio-frequency coil 2 to produce powerful magneticline of force through the high-frequency current after the conversion; Make the fuel rod upper end utilize magneticline of force to carry out induction heating near the part of radio-frequency coil 2, radio-frequency coil 2 is lowered the temperature through heat-eliminating medium, after melt near the position below the radio-frequency coil termination of treating fuel rod; Young brilliant chuck band young brilliant decline; The melting area of inserting fuel rod after making young crystalline substance through the drawing hole, it is brilliant to promote the son then, and the melt cognition on fuel rod top is followed young brilliant rising; Also corresponding the following synchronously of the lower shaft of its fuel rod bottom slowly risen, but its fuel rod must not contact with radio-frequency coil 2; Because the end of fuel rod maybe be not too smooth; So, be designed to step surface below the radio-frequency coil, its role is to make as much as possible the many bottom surfaces of raw material silicon rod near radio-frequency coil 2; It is designed to downward concave face above radio-frequency coil; Its effect is can reduce high-frequency current too the concentrating of middle part, and makes its uniform distribution on radio-frequency coil 2, to realize being heated effect of uniform; The melting area on fuel rod top is in young brilliant sticking and drive and through behind the radio-frequency coil 2 drawing holes 5; The condensation owing to weakening of magneticline of force; Just form a new column type crystal, its young brilliant chuck is carried young brilliant slowly rising secretly, just can form the finished silicon core of desired length.
Claims (10)
1. six or seven silicon core water droplet shapes of a production and the combination of racket shape draw the radio-frequency coil in hole; Comprise radio-frequency coil (2), suction culvert (8), outlet pipeline (13), Connection Block (9) and ground wire connection mechanism; The rounded structure of said radio-frequency coil (2); Upper side middle part at circular radio-frequency coil (2) is provided with downward concave face (10); Bottom surfaces middle part at circular radio-frequency coil (2) is provided with ring-shaped step (14) upwards; Outer most surrounding at radio-frequency coil (2) is provided with cooling water channel; It is characterized in that: draw the hole or change the middle part that material hole (11) is arranged on circular radio-frequency coil (2); Draw the hole or change evenly be provided with on the outside radio-frequency coil (2) in material hole (11) six around drawing hole (5), by drawing the hole or changing material hole (11) to being radial six diversion trenchs (12) that are provided with, the external end head of said six diversion trenchs (12) is arranged on six and draws between the holes (5); Said six draw holes (5) wherein one to five be provided with drainage trough (6) remaining be set to " V " shape gap (16) towards drawing the hole or changing material hole (11) one sides towards drawing the hole or changing material hole (11) one sides, the tip of the end of said drainage trough (6) and " V " shape gap (16) with draw the hole or change the material hole and leave spacing; One of them of said six diversion trenchs (12) is through opening (7) straight perforation tremendously high frequency coil (2) outer rim; The two ends of cooling water channel form suction culvert (8) and outlet pipeline (13) respectively in the both sides of opening (7); Suction culvert (8) and outlet pipeline (13) outer end are respectively equipped with Connection Block (9), are provided with ground wire connection mechanism in the outside of radio-frequency coil (2).
2. production six as claimed in claim 1 or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, and it is characterized in that: the external end head at said six diversion trenchs (12) is respectively equipped with stomidium (4).
3. production six as claimed in claim 2 or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, it is characterized in that: the stomidium (4) that is provided with respectively at said six diversion trenchs (12) external end head is circle or polygon.
4. production six as claimed in claim 1 or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; It is characterized in that: the end of said drainage trough (6) is set to " V " shape angle or circular arc, and drainage trough (6) is set to arc-shaped transition or angle transition with the end that is connected that draws hole (5).
5. production six as claimed in claim 1 or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; It is characterized in that: the through hole of said suction culvert (8) and outlet pipeline (13) passes said Connection Block (9), is respectively equipped with open hole (15) in both sides up and down at the suction culvert (8) of said Connection Block (9) and the through hole of outlet pipeline (13).
6. draw the radio-frequency coil in hole like claim 1 or 5 described productions six or seven silicon core water droplet shapes and the combination of racket shape, it is characterized in that: said Connection Block (9) is polygon Connection Block (9) or two semicircle Connection Block (9) or oval Connection Block (9).
7. production six as claimed in claim 1 or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; It is characterized in that: in radio-frequency coil (2) outer most surrounding cooling water channel being set does; The outside upper ring surface of radio-frequency coil (2) or outside subordinate's anchor ring or outer edge surface fluting, said cooling water channel ring is embedded in the radio-frequency coil (2); Or at the outer edge surface of radio-frequency coil (2) through soldering or brazing or silver soldering welding cooling water channel, cooling water channel and radio-frequency coil (2) are integrally formed.
8. production six as claimed in claim 1 or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; It is characterized in that: six upper port places that draw hole (5) are provided with annular chamfer (3), and the upper port place in said drawing hole or change material hole (11) is provided with annular chamfer (3).
9. production six as claimed in claim 1 or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole, and it is characterized in that: said opening (7) is set to " U " shape opening (7) or " V " shape opening (7) or " " " shape opening (7) or diagonal cut joint (7).
10. production six as claimed in claim 1 or seven silicon core water droplet shapes and the combination of racket shape draw the radio-frequency coil in hole; It is characterized in that: said ground wire connection mechanism; The outside upper ring surface of radio-frequency coil (2) or down anchor ring or outer edge surface be provided with ground wire web plate (1), or at the outside upper ring surface of radio-frequency coil (2) or anchor ring or outer rim punching connect ground wire through screw down.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120365569 CN202226955U (en) | 2011-09-20 | 2011-09-20 | High frequency coil for producing water-drop-shaped or bat-shaped combination drawing hole with six or seven silicon cores |
| PCT/CN2011/001846 WO2013040735A1 (en) | 2011-09-20 | 2011-11-02 | High frequency coil drawing hole structure capable of producing 5 to 10 silicon cores simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120365569 CN202226955U (en) | 2011-09-20 | 2011-09-20 | High frequency coil for producing water-drop-shaped or bat-shaped combination drawing hole with six or seven silicon cores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202226955U true CN202226955U (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120365569 Expired - Lifetime CN202226955U (en) | 2011-09-20 | 2011-09-20 | High frequency coil for producing water-drop-shaped or bat-shaped combination drawing hole with six or seven silicon cores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202226955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726929A (en) * | 2013-12-23 | 2015-06-24 | 刘剑 | Cucurbit-shaped drawing aperture high frequency induction coil device for seven silicon core production |
-
2011
- 2011-09-20 CN CN 201120365569 patent/CN202226955U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726929A (en) * | 2013-12-23 | 2015-06-24 | 刘剑 | Cucurbit-shaped drawing aperture high frequency induction coil device for seven silicon core production |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
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| CX01 | Expiry of patent term |