CN201678696U - Combined taper oxygen lance - Google Patents
Combined taper oxygen lance Download PDFInfo
- Publication number
- CN201678696U CN201678696U CN2010201624279U CN201020162427U CN201678696U CN 201678696 U CN201678696 U CN 201678696U CN 2010201624279 U CN2010201624279 U CN 2010201624279U CN 201020162427 U CN201020162427 U CN 201020162427U CN 201678696 U CN201678696 U CN 201678696U
- Authority
- CN
- China
- Prior art keywords
- pipe
- oxygen
- tapering
- oxygen rifle
- shower nozzle
- 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.)
- Expired - Lifetime
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 150
- 239000001301 oxygen Substances 0.000 title claims abstract description 150
- 238000005242 forging Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000003825 pressing Methods 0.000 claims description 41
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract description 27
- 239000007921 spray Substances 0.000 abstract description 4
- 230000003245 working effect Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Nozzles (AREA)
Abstract
The utility model relates to a combined taper oxygen lance, comprising a forging spray head, a water inlet pipe, a water outlet pipe and an oxygen inlet pipe, wherein the forging spray head is connected with an outer taper pipe, a middle taper pipe and an oxygen lance inner pipe; the outer taper pipe is connected with an outer reduced pipe. The middle taper pipe is connected with a middle reduced pipe. The outer reduced pipe is connected with the oxygen lance outer pipe. The middle reduced pipe is connected with an oxygen lance middle pipe. The outer taper pipe comprises a taper section, wherein the taper alpha of the taper section is 1.5 degrees to 5 degrees. The utility model adopts the combination of the forging spray head and large taper pipe, i.e, the taper alpha of the taper section is 1.5 degrees to 5 degrees so as to solve the problems of slag adhesion and short service life of the oxygen lance, solves the problem of the slag adhesion of the oxygen lance, and greatly prolongs the service life of the oxygen lance.
Description
Technical field
The utility model relates to a kind of combination tapering oxygen rifle that converter steelmaking is used.
Background technology
During converter steelmaking was produced, oxygen rifle and shower nozzle work-ing life, low and oxygen rifle dry slag was the insoluble two large problems of converter steelmaking always.Along with the generally employing of Technology of Slag Splashingfor Furnace Maintenance, the sticking rifle problem of oxygen rifle is more serious, and the life-span of oxygen rifle and shower nozzle also constantly reduces.Be bonded at the not slag only on the oxygen rifle, it is actually a kind of steel, slag mixture, contains a lot of rare metal furnace charges such as magnesium, and sticking rifle has not only delayed normal production, has caused the waste of furnace charge and the increase of production cost, and may cause security incident.Sticking rifle has also brought heavy manual work and psychological pressure to the steelworker simultaneously.The use of Dreg Scraping Device of Oxygen Lance can alleviate working strength of workers a little, but use limitation is arranged, and damages the oxygen rifle simultaneously easily.Facts have proved that using tapering oxygen rifle is to solve the effective means of the sticking rifle of oxygen rifle.
Tapering oxygen rifle tapering in the past is all smaller, tapering ability 50 ' about, take off the slag DeGrain; Taper Pipe all exists laterally or longitudinal weld, weld seam takes place easily snap accident such as leak, and do not obtain the work-ing life of oxygen rifle and shower nozzle prolonging, therefore invent a kind ofly take off slag automatically, high tapering oxygen rifle of life-span is very urgent.
The utility model content
Problem to be solved in the utility model provides a kind of combination tapering oxygen rifle that takes off slag, long service life automatically.
For solving the problem that the rifle body is stained with slag and is lacked work-ing life, achieve the above object, the utility model adopts following technical scheme:
A kind of combination tapering oxygen rifle, described oxygen rifle comprises forging and pressing shower nozzle, water inlet pipe, rising pipe and feeding oxygen tube, it is characterized in that: described forging and pressing shower nozzle is connected with pipe in external taper pipe, middle tapering pipe, the oxygen rifle, described external taper pipe is connected with outer adapter bonnet, tapering Guan Yuzhong adapter bonnet connects in described, the outer pipe coupling of described outer adapter bonnet and oxygen rifle, pipe coupling in described middle adapter bonnet and the oxygen rifle, described external taper pipe comprises tapered section, and the tapering α of tapered section is 1.5 °～5 °.
Below be the further improved technical scheme of the utility model:
Described external taper length of tube is 3～12 meters, and the external taper pipe also comprises a straight section, and described straight section length is 0.5～1 meter.
The tapered section of described external taper pipe is identical with the tapering of middle tapering pipe tapered section.
Described external taper pipe and outer adapter bonnet adopt hot-work one-body molded respectively.
Described forging and pressing shower nozzle is fixedly mounted on oxygen rifle front end, and rising pipe, oxygen rifle outer tube, outer adapter bonnet, external taper pipe weld successively; Pipe, middle adapter bonnet, middle tapering pipe weld successively in water inlet pipe, the oxygen rifle; Sealing of tube in feeding oxygen tube and the oxygen rifle; Pipe and the assembling of forging and pressing shower nozzle are integrally welded in external taper pipe, middle tapering pipe, the oxygen rifle.
Described forging and pressing shower nozzle comprises interior welded tube, middle welded tube, outer welded tube and water eliminator, oxygen shunting end, oxygen outlet end and oxygen blast hole.
The oxygen shunting end of described forging and pressing shower nozzle adopts welding fabrication with the oxygen outlet end; Water eliminator and oxygen shunting end link into an integrated entity by spot weld; Outer welded tube, middle welded tube, interior welded tube are held integrally welded with oxygen outlet end, water eliminator, oxygen shunting respectively.
Oxygen shunting end adopts the copper coin forging forming respectively with the oxygen outlet end.
The oxygen shunting end of described forging and pressing shower nozzle is provided with branch water awl, and the oxygen outlet end of described forging and pressing shower nozzle is provided with down and divides the water awl.
The oxygen blast hole of described forging and pressing shower nozzle is by the uniform or non-homogeneous layout in peripheral 3 holes～8 holes.
The difference of this combination tapering oxygen rifle and other oxygen rifles is: the tapering α that to adopt forging and pressing shower nozzle and big tapering pipe be tapered section be 1.5 °-5 ° combination solve oxygen rifle dry slag and work-ing life short problem, solve oxygen rifle dry slag problem, improved oxygen rifle work-ing life greatly.
The principal feature of forging and pressing shower nozzle is that Combination Welding was made after the main part of shower nozzle adopted the copper coin forging forming, density by 8.5 bring up to 8.9, hardness brings up to HL350～380 by hardness of cast form HL50, strengthened the capacity of heat transmission of shower nozzle, make slag be difficult to stick to the shower nozzle end face and be easy to come off, slowed down the erosion of shower nozzle end face.
The oxygen shunting end of forging and pressing shower nozzle and each design of oxygen outlet end have a branch water awl, make current smooth and easy, do not produce sinuous flow, strengthen the cooling to the shower nozzle center, can solve the center steel bonding of shower nozzle end and " eat into " phenomenon, the life-span of also favourable raising oxygen rifle and shower nozzle.
The principal feature of rifle body is that outer tube and middle pipe have all adopted big tapering pipe, above shower nozzle 3～12 meters long, 1.5 °-5 ° of taperings, in the past the tapering of tapering rifle just 50 ' about, Taper Pipe makes is stained with bigger downslide component of slag generation, and under the effect of this component dry slag come off voluntarily melt down in, realize the purpose take off slag automatically having reduced the loss of furnace charge.
For the slag effect is taken off in the better realization that makes the utility model combination tapering oxygen rifle, also being unlikely simultaneously makes the tapering pipe long, external taper pipe and middle tapering pipe all design the straight section of one section 500～1000mm, straight section and tapering partly are that the hot-work integral production forms, there is not weld seam, solve the problem that conelet degree rifle in the past exists weld seam to leak, improved the safety coefficient of oxygen rifle.
Middle tapering pipe is identical with external taper pipe tapering, and the slit is reasonable, makes out water flow velocity even, reduces turbulent and produces, and strengthens cooling performance, well drives and increased shower nozzle to be to use the life-span.
This combination tapering oxygen rifle at the Ji steel, hold after steel mills such as steel, Xuan Gang use, reach mean life more than 1000 heats, ordinary oxygen rifle and shower nozzle life-span on average are about 200 heats, through the practice experiment, the 3-5 that can reach ordinary oxygen rifle and shower nozzle is doubly.Take off the slag effect and bring up to 90%, original tapering just 50 ' about the actual slag effect of taking off of tapering rifle less than 5%.
In sum, this combination tapering oxygen rifle can realize taking off automatically slag, forges and presses the life-span that can improve oxygen rifle and shower nozzle greatly that is used in combination of shower nozzle and Taper Pipe, and be ordinary oxygen rifle and shower nozzle 3-5 times work-ing life.The use of forging and pressing shower nozzle and Taper Pipe can reach synchronous effect, has reduced and has changed the time of oxygen rifle, thereby improved production efficiency.This combination tapering oxygen rifle is a kind of novel tapering oxygen rifle that can take off slag, high life automatically, economize on resources, reduce production costs, enhance productivity.
Description of drawings
Fig. 1 is the structural representation of the utility model combination tapering oxygen rifle;
Fig. 2 is the structural representation of forging and pressing shower nozzle in the utility model.
In the accompanying drawing: 1, forging and pressing shower nozzle; 2, external taper pipe; 3, middle tapering pipe; 4, pipe in the oxygen rifle; 5, middle adapter bonnet; 6, outer adapter bonnet; 7, manage in the oxygen rifle; 8, oxygen rifle outer tube; 9, rising pipe; 10, water inlet pipe; 11, feeding oxygen tube; 12, interior welded tube; 13, sealing-ring; 14, middle welded tube; 15, oxygen shunting end; 16, outer welded tube; 17, water eliminator; 18, oxygen outlet end; 19, oxygen blast hole; 20, divide the water awl down; 21, divide the water awl on; The taper angle of α-tapering pipe; The tapered section of A-tapering pipe; The straight section of B-tapering pipe; The oxygen channel of C-forging and pressing shower nozzle; The water entry of D-forging and pressing shower nozzle; The water exit of E-forging and pressing shower nozzle.
Embodiment
Embodiment, the utility model combination tapering oxygen rifle as shown in Figure 1, 2, a kind of combination tapering oxygen rifle, described oxygen rifle comprises forging and pressing shower nozzle 1, water inlet pipe 10, rising pipe 9 and feeding oxygen tube 11, forging and pressing shower nozzle 1 is connected with pipe 4 in external taper pipe 2, middle tapering pipe 3, the oxygen rifle, external taper pipe 2 is connected with outer adapter bonnet 6, tapering pipe 3 is connected with middle adapter bonnet 5 in described, outer adapter bonnet 6 is connected with oxygen rifle outer tube 8, middle adapter bonnet 5 is connected with pipe 7 in the oxygen rifle, external taper pipe 2 comprises tapered section A, and the tapering α of tapered section is 1.5 °～5 °.
External taper pipe 2 length are 3～12 meters, and external taper pipe 2 also comprises a straight section B, and straight section B length is 0.5～1 meter, and two sections is that the hot-work integral production forms, and does not have weld seam.External taper pipe 2 and outer adapter bonnet 6 all are according to advancing tubing machine hot-expanding pipe principle to make, not having horizontal and vertical weld seam.
The tapered section A of external taper pipe 2 is identical with the tapering of middle tapering pipe 3 tapered sections, and length is identical.
External taper pipe 2 and outer adapter bonnet 6 adopt hot-work one-body molded respectively.
Forging and pressing shower nozzle 1 is fixedly mounted on oxygen rifle front end, and rising pipe 9, oxygen rifle outer tube 8, outer adapter bonnet 6, external taper pipe 2 weld successively; Manage 7 in water inlet pipe 10, the oxygen rifle, middle adapter bonnet 5, middle tapering pipe 3 weld successively; Pipe 4 welding in feeding oxygen tube 11 and the oxygen rifle; Pipe 4 and 1 assembling of forging and pressing shower nozzle are integrally welded in external taper pipe 2, middle tapering pipe 3, the oxygen rifle.
Three layers of pipe make up tapering oxygen rifle with the integrally welded composition of forging and pressing combination 1 assembling as can be seen from Figure.
As shown in Figure 2, welded tube 12, sealing-ring 13, middle welded tube 14, outer welded tube 16 and water eliminator 17, oxygen shunting end 15, oxygen outlet end 18 and oxygen blast hole 19 in forging and pressing shower nozzle 1 comprises.
The oxygen shunting end 15 and the oxygen outlet end 18 of forging and pressing shower nozzle 1 adopt welding fabrication; Water eliminator 17 and oxygen shunting end 15 link into an integrated entity by spot weld; Outer welded tube 16, middle welded tube 14, interior welded tube 12 are integrally welded with oxygen outlet end 18, water eliminator 17, oxygen shunting end 15 respectively.Water eliminator 17, oxygen shunting end 15 welding positions are in oxygen blast hole 19 junctions of water eliminator 17 with oxygen shunting end 15.
The oxygen shunting end 15 of forging and pressing shower nozzle 1 is provided with branch water awl 21, and the oxygen outlet end 18 of forging and pressing shower nozzle 1 is provided with down and divides water awl 20.
The oxygen blast hole 19 of forging and pressing shower nozzle 1 is by the uniform or non-homogeneous layout in peripheral 3 holes～8 holes.
Combination Welding was made after the forging and pressing nozzle body partly adopted the copper coin forging forming, density by 8.5 bring up to 8.9, hardness brings up to HL350～380 by hardness of cast form HL50, effectively raise density, the hardness of nozzle body, physicals, the mechanical property of shower nozzle have been changed, the capacity of heat transmission, the resistance to corrosion of shower nozzle have been strengthened greatly, make slag be difficult to stick to the shower nozzle end face and be easy to come off, slowed down the erosion of high temperature furnace slag and molten iron, improved the work-ing life of shower nozzle greatly the shower nozzle end face.Become even, closely knit through the forging and pressing wall thickness, die cavity smooth finish improves, and has significantly reduced the water supply resistance, under the constant situation of pressure of supply water, has improved the water supply intensity of shower nozzle, has guaranteed cooling performance.
When the utility model combination tapering oxygen rifle carries out the operation of top blast spray oxygen in converter, when the slag mixture in the converter splashes when sticking on the oxygen rifle outside surface, because second position outside surface of rifle body is a cone, under the action of gravity of slag mixture own, the slag mixture is difficult to stop and sticks on the oxygen gun body, realize that the rifle body takes off slag automatically, and there is not weld seam in the tapering pipe, shower nozzle adopts the forging and pressing shower nozzle, the work-ing life of also having improved the oxygen rifle when improving oxygen rifle safety coefficient.Through practical proof, the life-span of shower nozzle and oxygen rifle can be improved 3-5 doubly, and the use of Taper Pipe and forging and pressing shower nozzle can reach synchronous effect, has alleviated workman's the scarfing cinder and the labour intensity of maintenance oxygen rifle, reduce the time of changing the oxygen rifle, improved the production efficiency of steel mill.
Claims (10)
1. combination tapering oxygen rifle, described oxygen rifle comprises forging and pressing shower nozzle (1), water inlet pipe (10), rising pipe (9) and feeding oxygen tube (11), it is characterized in that: described forging and pressing shower nozzle (1) is connected with external taper pipe (2), middle tapering pipe (3), pipe (4) in the oxygen rifle, described external taper pipe (2) is connected with outer adapter bonnet (6), tapering pipe (3) is connected with middle adapter bonnet (5) in described, described outer adapter bonnet (6) is connected with oxygen rifle outer tube (8), adapter bonnet (5) is connected with pipe (7) in the oxygen rifle in described, described external taper pipe (2) comprises tapered section (A), and the tapering α of tapered section is 1.5 °～5 °.
2. combination tapering oxygen rifle as claimed in claim 1 is characterized in that: described external taper pipe (2) length is 3～12 meters, and external taper pipe (2) also comprises a straight section (B), and described straight section (B) length is 0.5～1 meter.
3. combination tapering oxygen rifle as claimed in claim 1 or 2 is characterized in that: the tapered section (A) of described external taper pipe (2) is identical with the tapering of middle tapering pipe (3) tapered section.
4. combination tapering oxygen rifle as claimed in claim 1 or 2 is characterized in that: described external taper pipe (2) and outer adapter bonnet (6) adopt hot-work one-body molded respectively.
5. combination tapering oxygen rifle as claimed in claim 1, it is characterized in that: described forging and pressing shower nozzle (1) is fixedly mounted on oxygen rifle front end, and rising pipe (9), oxygen rifle outer tube (8), outer adapter bonnet (6), external taper pipe (2) weld successively; Pipe (7), middle adapter bonnet (5), middle tapering pipe (3) weld successively in water inlet pipe (10), the oxygen rifle; Pipe (4) welding in feeding oxygen tube (11) and the oxygen rifle; Pipe (4) and forging and pressing shower nozzles (1) assembling are integrally welded in external taper pipe (2), middle tapering pipe (3), the oxygen rifle.
6. combination tapering oxygen rifle as claimed in claim 1 is characterized in that: described forging and pressing shower nozzle (1) comprises interior welded tube (12), middle welded tube (14), outer welded tube (16) and water eliminator (17), oxygen shunting end (15), oxygen outlet end (18) and oxygen blast hole (19).
7. combination tapering oxygen rifle as claimed in claim 6 is characterized in that: the oxygen shunting end (15) of described forging and pressing shower nozzle (1) adopts welding fabrication with oxygen outlet end (18); Water eliminator (17) links into an integrated entity by spot weld with oxygen shunting end (15); Outer welded tube (16), middle welded tube (14), interior welded tube (12) hold (15) integrally welded with oxygen outlet end (18), water eliminator (17), oxygen shunting respectively.
8. combination tapering oxygen rifle as claimed in claim 6 is characterized in that: oxygen shunting end (15) adopts the copper coin forging forming respectively with oxygen outlet end (18).
9. combination tapering oxygen rifle as claimed in claim 6 is characterized in that: the oxygen shunting end (15) of described forging and pressing shower nozzle (1) is provided with branch water awl (21), and the oxygen outlet end (18) of described forging and pressing shower nozzle (1) is provided with down and divides water awl (20).
10. combination tapering oxygen rifle as claimed in claim 1 is characterized in that: the oxygen blast hole (19) of described forging and pressing shower nozzle (1) is by the uniform or non-homogeneous layout in peripheral 3 holes～8 holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201624279U CN201678696U (en) | 2010-04-19 | 2010-04-19 | Combined taper oxygen lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201624279U CN201678696U (en) | 2010-04-19 | 2010-04-19 | Combined taper oxygen lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201678696U true CN201678696U (en) | 2010-12-22 |
Family
ID=43343748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201624279U Expired - Lifetime CN201678696U (en) | 2010-04-19 | 2010-04-19 | Combined taper oxygen lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201678696U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232839A (en) * | 2014-09-19 | 2014-12-24 | 姜利祥 | Giant-pen-shaped oxygen lance |
| CN108467916A (en) * | 2018-06-25 | 2018-08-31 | 河南南方中冶设备技术有限公司 | A kind of steel-making more taper oxygen rifles of the double-deck steep-taper |
| CN109457079A (en) * | 2019-01-11 | 2019-03-12 | 何斌 | A kind of pneumatic steelmaking oxygen rifle |
-
2010
- 2010-04-19 CN CN2010201624279U patent/CN201678696U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232839A (en) * | 2014-09-19 | 2014-12-24 | 姜利祥 | Giant-pen-shaped oxygen lance |
| CN108467916A (en) * | 2018-06-25 | 2018-08-31 | 河南南方中冶设备技术有限公司 | A kind of steel-making more taper oxygen rifles of the double-deck steep-taper |
| CN109457079A (en) * | 2019-01-11 | 2019-03-12 | 何斌 | A kind of pneumatic steelmaking oxygen rifle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG CHONGSHENG METALLURGICAL OXYGEN LANCE CO. Free format text: FORMER OWNER: LIU YANCHUN Effective date: 20120206 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120206 Address after: 261061, two North Street, Dongfang Road, Weifang high tech Zone, Shandong, China Patentee after: Shandong Chongsheng Metallurgical Oxygen Lance Co., Ltd. Address before: 261061, Shandong province Weifang high tech Zone East Road North Jie Xing two street, Shandong Chong Sheng metallurgical Oxygen Co., Ltd. Patentee before: Liu Yanchun |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |
|
| CX01 | Expiry of patent term |