WO2005083816A1 - 鉛蓄電池用セパレータ - Google Patents
鉛蓄電池用セパレータ Download PDFInfo
- Publication number
- WO2005083816A1 WO2005083816A1 PCT/JP2005/003041 JP2005003041W WO2005083816A1 WO 2005083816 A1 WO2005083816 A1 WO 2005083816A1 JP 2005003041 W JP2005003041 W JP 2005003041W WO 2005083816 A1 WO2005083816 A1 WO 2005083816A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- separator
- porous membrane
- reducing substance
- amount
- battery
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a separator used for a lead storage battery.
- a lead-acid battery which is widely used as a starting power supply for automobiles, has a grid-like current collector made of lead or a lead alloy and has a positive electrode holding lead dioxide and a spongy metal lead. It is composed of a negative electrode, a separator for insulating and separating between the electrode plates is sandwiched, housed in a battery case, and filled with a dilute sulfuric acid solution as an electrolyte.
- separators for lead-acid batteries As separators for lead-acid batteries, linter pulp was prepared by wet papermaking and cured with phenolic resin and bonded to a glass mat, or pulp-like synthetic fiber, inorganic powder and glass fiber were made by wet papermaking. There is a product obtained by laminating a glass mat on a product, and a synthetic resin separator having ribs formed by extruding polyethylene resin and inorganic powder.
- the polyethylene resin type separator has the above-mentioned advantages, it is composed of a polyethylene resin as a main material, and therefore, a surfactant for improving wettability with an electrolytic solution is essential.
- a surfactant for improving wettability with an electrolytic solution is essential.
- the polyethylene resin separator having rib-shaped protrusions does not use a glass mat, the surfactant generated from the separator is relatively easily eluted from the separator during electrolysis due to the gas generated from the positive electrode in the overcharged state. This was the cause of the problem.
- the reason that corrosion is likely to occur in the portion welded by post-processing is that cracks and voids are generated at the weld interface of the post-processed weld, so that crevice corrosion occurs immediately and further, where the crevice corrosion is likely to occur. This is presumed to be because the corrosion of the steel was accelerated by the presence of the organic acid. To fundamentally eliminate such crevice corrosion, welding must be eliminated from the battery manufacturing process, but this solution is hardly realistic at present. Therefore, the present invention restricts the maximum amount of the reducing substance released / generated from the separator to a certain level or less, so that a predetermined battery capacity can be reliably obtained after the initial charge, and the battery life is extended.
- the object of the present invention is to provide a lead-acid battery separator capable of
- the lead-acid battery separator of the present invention comprises a polyolefin resin, an inorganic powder, and a mineral oil as main materials, and a surfactant as a sub-material, as described in claim 1 for achieving the above object.
- a porous membrane that contains a porous membrane, a positive electrode plate, a negative electrode plate, and dilute sulfuric acid, and is released and eluted after electrolysis at a direct current of 1.2 A and about 25 ° C for 24 hours.
- the amount of reducing substance is N / 100 permanganate per 100 cm 2 of the porous membrane.
- the lead-acid battery separator according to claim 2 is characterized in that the converted value of the potassium solution consumption is l.OmL / 100 cm 2 or less. In the storage battery separator, the amount of the reducing substance is reduced to 0.7 mL / 100 cm 2 or less in terms of the consumption of the N / 100 potassium permanganate solution per 100 cm 2 of the porous membrane. I do.
- FIG. 1 is an explanatory view of an electrode group for electrolysis relating to the specification of the amount of a reducing substance in the present invention.
- FIG. 2 is an explanatory diagram showing a state in which a battery case is assembled with the electrode group for electrolysis of FIG. 1 relating to the specification of the amount of reducing substance in the present invention.
- FIG. 3 is an explanatory diagram showing a state in which a direct current is flowing through the battery case of FIG. 2 relating to the specification of the amount of reducing substance in the present invention.
- the lead-acid battery separator of the present invention is a porous film containing a polyolefin resin, an inorganic powder, and a mineral oil as main materials and a surfactant as a secondary material, wherein the porous film, the positive electrode plate, Using an electrolysis cell composed of a negative electrode plate and dilute sulfuric acid, the amount of reducing substance released and eluted in dilute sulfuric acid after electrolysis at a direct current of 1.2 A and about 25 ° C. for 24 hours is 100 cm 2.
- the conversion value of N / 100 potassium permanganate solution consumption per unit is not more than l.OmL / 100 cm 2 .
- the reducing substance derived from the surfactant eluted from the separator into the electrolytic solution by the electrolysis method was titrated with a potassium permanganate solution as an oxidizing agent, and released and eluted from the separator. It is possible to evaluate the amount of the reducing substance by the consumption of the N / 100 potassium permanganate solution per 100 cm 2 of the porous membrane. Furthermore, when the electrolyte was titrated with an N / 100 potassium permanganate solution, In the same way as the agent, the transition metal ions, which easily change the valence, which can inhibit the active material during the initial charging process of the battery, are also detected.
- transition metals can be detected as a reducing substance similarly to the surfactant.
- the amount of the reducing substance is determined by the converted value of the consumption of the N / 100 potassium permanganate solution per 100 cm 2 of the porous membrane, a predetermined battery capacity is inhibited.
- the total amount of both surfactants and transition metals could be detected, which proved to be optimal for evaluating the stabilization of battery capacity after initial charging.
- a lead storage battery separator made of a porous membrane, a positive electrode plate, a negative electrode plate and an electrolytic cell made of dilute sulfuric acid are electrolyzed, surfactants and the like which are released and eluted in the dilute sulfuric acid are removed.
- the amount of the reducing substance to be derived is evaluated by the consumption amount of the N / 100 potassium permanganate solution, and the converted value of the consumption amount of the N / 100 potassium permanganate solution per 100 cm 2 of the porous membrane,
- the positive electrode or negative electrode is activated (oxidation-reduction reaction) during the initial charge of the battery.
- a stable battery capacity can be obtained without disturbing the battery.
- the corrosion of the welded portion such as the connection between cells is suppressed to prevent a decrease in current collection efficiency, and the battery life is maintained even in a high-temperature atmosphere. Longer life.
- a polyethylene resin having a weight average molecular weight of 300,000 or more, a polypropylene resin, or the like can be used singly or as a mixture of a plurality of kinds.
- one or more of silicon oxide, titanium oxide, calcium silicate, aluminum oxide, calcium carbonate, kaolin clay, talc, diatomaceous earth, and glass fiber powder can be used in combination.
- paraffin oils are mainly used as mineral oils.
- an anion-based or non-ionic surfactant which is insoluble in an extraction solvent can be used as a surfactant which is a sub-material constituting the lead storage battery separator.
- Novolak type which is insoluble in extraction solvent together with surfactant Alternatively, an antioxidant such as a resol type phenol-based or epoxy-based antioxidant may be used.
- the porous membrane constituting the separator for a lead-acid battery of the present invention is, for example, a polyolefin resin, an inorganic powder, and a mineral oil.
- a raw material that also has a secondary material strength such as a main material and a surfactant, which is produced using a raw material having a surfactant content of 0.5 part or less per 100 parts of the raw material.
- the surfactant content in the raw material that forms the porous membrane By adjusting the surfactant content in the raw material that forms the porous membrane to 0.5 parts or less, the amount of reducing substance that can be released and eluted in dilute sulfuric acid in electrolytic cells that incorporate the porous membrane as a separator It is possible to produce a porous membrane in which the conversion value of the N / 100 potassium permanganate solution consumption per S, 100 cm 2 profile is l.OmL.
- the surfactant content in the raw materials takes into account the contents of the polyolefin resin, inorganic powder, and mineral oil as the main materials, the amount of mineral oil removed after extrusion sheet molding, the base thickness of the porous membrane, etc. Then, it is preferable to adjust.
- the raw material was mixed with 9.5-30 parts of polyolefin resin, 19.5-30 parts of inorganic powder, 49.5-70 parts of mineral oil, and 100 parts of a sub-material consisting of surfactants, etc., and stirred. 'Mix.
- the surfactant is blended so that the content is 0.5 part or less in 100 parts of the raw material.
- the mixture is melt extruded to form an extruded sheet containing mineral oil.
- the mineral oil is removed from the extruded sheet using an organic solvent so that a desired amount of the mineral oil remains in the extruded sheet, thereby producing a porous film having a desired thickness.
- the surfactant may not be contained in the raw material forming the porous film, but may be attached to the extruded sheet which has been subjected to the step of removing mineral oil.
- the surfactant released and eluted into the dilute sulfuric acid solution in the electrolytic cell incorporating the porous membrane as a separator.
- the amount reducing substance derived from the said porous membrane 100 cm 2 so that l.OmL / lOOcm 2 or less N / 100 consumption in terms of potassium permanganate per sheet, to prepare a porous membrane
- an organic solvent for example, n-hexane
- the organic solvent solution adjusted to be 3% mineral oil is applied in an amount 5 times the weight of the base material, and dried at 50 ° C. %, And a separator having a base thickness of 0.20 mm made of a porous film containing 0.1% by mass was obtained.
- the separator adjusts the content of the surfactant so that the amount of reducing substances contained in the diluted sulfuric acid in the electrolytic cell using the separator is N / 100 per 100 cm 2 of the porous membrane. It was prepared so that the converted value of the consumption amount of the potassium manganate solution was 0.4 mL / 100 cm 2 .
- Example 13 11 parts of a polyethylene resin having a weight average molecular weight of 1.5 to 2 million, 27 parts of silica powder having a specific surface area of 200 m 2 / g, 60 parts of mineral oil, and sodium dialkyl sulfosuccinate as a surfactant were used as described above.
- Example 13 0.9 parts was weighed out, increasing from 13 and stirred and mixed with a Hensile mixer. Except for using this mixture, a separator having a base thickness of 0.20 mm and consisting of a porous film containing 13% of mineral oil was obtained in the same manner as in Example 1.
- the separator adjusts the content of the surfactant so that the amount of reducing substance contained in the diluted sulfuric acid in the electrolytic cell using the separator is N / 100 per 100 cm 2 of the porous membrane.
- the solution was prepared so that the conversion value of the consumption amount of the potassium manganate solution was 1.8 mL / 100 cm 2 .
- Example 13 15 parts of a polyethylene resin having a weight average molecular weight of 1.5 to 2,000,000, 15 parts of silica powder having a specific surface area of 200 m 2 / g, 58 parts of mineral oil, and sodium dialkyl sulfosuccinate as a surfactant
- the U portion was increased by more than 13 and weighed and mixed by stirring with a Henschel mixer. Except for using this mixture, a separator having a base thickness of 0.20 mm and consisting of a porous film containing 13% of mineral oil was obtained in the same manner as in Example 1.
- the separators are the by adjusting the content of the surfactant, reducing substance amount contained in the dilute sulfuric acid in the electrolytic cell is over-N / 100 per the sentence porous membrane 100 cm 2 using the separator It was prepared so that the converted value of the consumption amount of the potassium manganate solution was 2.2 mL / 100 cm 2 .
- the electrical resistance of the separator was measured using a test facility compliant with SBA S0402 section 8.4.2, 24 hours after immersion in dilute sulfuric acid.
- the measurement of the mass of the reductant contained in the separator based on the converted value of the N / 100 potassium permanganate consumption is performed by electrolyzing with the electrolytic cell composed of each of the separators, the positive electrode plate, the negative electrode plate, and the diluted sulfuric acid. Two operations were performed, one to elute the organic acid, which is a reducing substance derived from the activator, and the other to measure the consumption by N / 100 potassium permanganate titration.
- Two pure lead positive electrode plates 2 measuring 9.5 cm x 0.2 cm thick and three pure lead negative electrode plates 3 of the same size are alternately combined with positive electrode plate 2 and negative electrode plate 3.
- the positive electrode plate 2 and the negative electrode plate 3 were laminated, and fixed on both sides using plastic (chloride chloride) frames 6 and 6 such that the electrode plate interval was 5 mm.
- the plastic frame 6 is provided with a plurality of holes 6a that can be connected to the positive electrode plate 2 or the negative electrode plate 3 from the outside of the plastic frame 6, and one positive pole 4 is formed on the outer surface of one of the plastic frames 6. And was connected to the two positive plates 2 inside the plastic frame 6 through the hole 6a.
- one negative pole 5 is provided on the outer surface of the other plastic frame so as to protrude above the plastic frame 6, and the three negative plates 3 inside the plastic frame are formed through the holes 6a. They were connected to form electrode group 1 for electrolysis.
- the electrolytic cell 9 is placed in a thermostatic water bath 11, a DC constant current power supply 10 is connected to the positive pole 4 and the negative pole 5, and the entire electrolytic cell is maintained at 25 ⁇ 2 ° C. Electrolysis was performed by flowing a DC current of 1.2 A continuously for 24 hours. After the electrolysis is completed, remove the separator Then, the suspension was allowed to stand for 12 hours to settle the floating lead powder, and the supernatant of the electrolytic solution was taken out as a test solution.
- the amount of the reducing substance in the test solution is determined based on “potassium permanganate reducing organic substance ( ⁇ )” described in JIS K1306 (Purified sulfuric acid test method) section 2.14.
- the amount of the reducing substance contained in the test solution was measured as the consumption of N / 100 potassium permanganate, and the measured value was converted as the consumption per separator of 10 cm in length and 10 cm in width.
- the end point of the potassium permanganate titration was defined as the end point when the color of the test solution became pale reddish purple of potassium permanganate.
- test batteries were prepared using the separators of Examples 13 and 13 and Comparative Examples 1 and 2 by the following method using the respective separators.
- the battery capacity after charging, the standard deviation of the battery capacity were measured, and a 75 ° C light load life test was performed on the test battery.
- Electrode plate a paste type positive electrode plate and a negative electrode plate obtained by an ordinary method were used (equivalent to 46B24L specified in JIS D5301-1999).
- the positive electrode plate was wrapped around the end portions of the separators of Examples 13 and 13 and Comparative Examples 1 and 2 while being gear-sealed, and six positive electrode plates and seven negative electrode plates were alternately laminated, and then the electrode group was welded. These electrode groups were inserted into a battery case made of polypropylene, and after welding between the electrode groups and the poles, the battery case lid was thermocompression-bonded.
- the battery After injecting the diluted sulfuric acid electrolyte into the container, the battery was formed in a constant temperature water bath at 40 ° C for 18 hours with an amount of electricity of 350% of the theoretical capacity of the cathode active material. Five test batteries each were completed using.
- test battery was submerged in a water tank set at 75 ° C, and the test was performed under the test conditions specified in JIS D5301-1999 8.3.5 (b).
- Test weight reducing substance was used each of the separators of Example 1 one 3 prepared so that l.OmL / lOOcm 2 or less in consumption terms of N / 100 potassium permanganate per porous membrane 100 cm 2 ⁇ The battery was able to improve the battery capacity after the first charge as compared with Comparative Examples 1 and 2.
- the reducing substance when the amount of the reducing substance is 0.7 mL / 100 cm 2 or less in terms of the consumption of N / 100 potassium permanganate per 100 cm 2 of the porous membrane, the can further improve the battery capacity, and as in example 1, a reducing agent amount multi Anashitsumaku 100 cm 2 per ⁇ N / 100 in consumption terms of potassium permanganate 0.5 mL / 100 cm
- the battery capacity after the initial charge was improved, and the battery capacity after the initial charge of each test battery was uniform, and good results were obtained.
- the lead-acid battery separator of the present invention can stably provide a predetermined battery capacity after initial charging and can prolong the battery life in a high-temperature environment.
- the industrial value of separators is extremely high.
- the amount of the reducing substance released and eluted in dilute sulfuric acid after electrolysis at a direct current of 1.2 A and about 25 ° C for 24 hours is titrated with an N / 100 potassium permanganate solution to reduce the amount of the reducing substance in dilute sulfuric acid.
- the separator for a lead-acid battery comprising a porous membrane as sex product mass is l.OmL / lOOcm 2 or less in terms of value of the consumption amount of the porous membrane 100 cm 2 per ⁇ N / 100 potassium permanganate solution
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- Inorganic Chemistry (AREA)
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Abstract
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05719491.2A EP1720209B1 (en) | 2004-02-27 | 2005-02-24 | Separator for lead acid storage battery |
JP2006510449A JP4789801B2 (ja) | 2004-02-27 | 2005-02-24 | 鉛蓄電池用セパレータ |
US10/589,961 US7939204B2 (en) | 2004-02-27 | 2005-02-24 | Separator for lead-acid battery |
CN2005800058209A CN1985385B (zh) | 2004-02-27 | 2005-02-24 | 用于铅酸电池的隔板和用于制造铅酸电池的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-055476 | 2004-02-27 | ||
JP2004055476 | 2004-02-27 |
Publications (1)
Publication Number | Publication Date |
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WO2005083816A1 true WO2005083816A1 (ja) | 2005-09-09 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/003041 WO2005083816A1 (ja) | 2004-02-27 | 2005-02-24 | 鉛蓄電池用セパレータ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7939204B2 (ja) |
EP (1) | EP1720209B1 (ja) |
JP (1) | JP4789801B2 (ja) |
CN (1) | CN1985385B (ja) |
WO (1) | WO2005083816A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016519389A (ja) * | 2013-03-15 | 2016-06-30 | アムテック リサーチ インターナショナル エルエルシー | 微小抵抗率鉛酸バッテリーセパレータ |
WO2019088040A1 (ja) * | 2017-10-31 | 2019-05-09 | 日本板硝子株式会社 | 鉛蓄電池用セパレータおよび鉛蓄電池 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2156487A4 (en) * | 2007-06-01 | 2016-11-16 | Daramic Llc | LEAD ACCUMULATOR SEPARATOR HAVING ENHANCED RIGIDITY |
WO2010058240A1 (en) * | 2008-11-19 | 2010-05-27 | Exide Industries Ltd | Low water loss battery |
US20150099168A1 (en) * | 2013-10-08 | 2015-04-09 | Johns Manville | Reinforced battery separator and methods of use therefor |
CN104459561B (zh) * | 2015-01-05 | 2017-04-12 | 福州大学 | 测量铅酸蓄电池超细玻璃纤维隔板铅枝晶短路的方法 |
CN105070861A (zh) * | 2015-07-10 | 2015-11-18 | 湖北崇高科工有限公司 | 汽车蓄电池隔板 |
CN105514328A (zh) * | 2016-01-13 | 2016-04-20 | 浙江天能能源科技有限公司 | 一种锂离子电池用陶瓷隔膜及其制备方法 |
CN106129304A (zh) * | 2016-07-20 | 2016-11-16 | 镇江奥美机电设备有限公司 | 铅酸蓄电池pe隔离板的生产工艺 |
CN106067527A (zh) * | 2016-07-20 | 2016-11-02 | 镇江奥美机电设备有限公司 | 铅酸蓄电池pe隔离板的生产系统 |
WO2018045268A2 (en) * | 2016-09-02 | 2018-03-08 | Daramic, Llc | Battery separators with improved conductance, improved batteries, systems, and related methods |
KR101786393B1 (ko) * | 2016-10-14 | 2017-10-17 | 현대자동차주식회사 | 납축전지용 전해액 조성물 및 이를 이용한 납축전지 |
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2005
- 2005-02-24 EP EP05719491.2A patent/EP1720209B1/en active Active
- 2005-02-24 JP JP2006510449A patent/JP4789801B2/ja active Active
- 2005-02-24 WO PCT/JP2005/003041 patent/WO2005083816A1/ja active Application Filing
- 2005-02-24 US US10/589,961 patent/US7939204B2/en active Active
- 2005-02-24 CN CN2005800058209A patent/CN1985385B/zh active Active
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JPS59211959A (ja) * | 1983-05-17 | 1984-11-30 | Japan Storage Battery Co Ltd | 鉛蓄電池用セパレ−タ−の製造方法 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016519389A (ja) * | 2013-03-15 | 2016-06-30 | アムテック リサーチ インターナショナル エルエルシー | 微小抵抗率鉛酸バッテリーセパレータ |
US9997756B2 (en) | 2013-03-15 | 2018-06-12 | Amtek Research International Llc | Lead-acid battery separators with ultra low resistivity and sustained wettability |
JP2019075381A (ja) * | 2013-03-15 | 2019-05-16 | アムテック リサーチ インターナショナル エルエルシー | 微小抵抗率鉛酸バッテリーセパレータ |
WO2019088040A1 (ja) * | 2017-10-31 | 2019-05-09 | 日本板硝子株式会社 | 鉛蓄電池用セパレータおよび鉛蓄電池 |
CN111295779A (zh) * | 2017-10-31 | 2020-06-16 | 日本板硝子株式会社 | 铅蓄电池用隔板以及铅蓄电池 |
JPWO2019088040A1 (ja) * | 2017-10-31 | 2020-11-19 | 日本板硝子株式会社 | 鉛蓄電池用セパレータおよび鉛蓄電池 |
JP7245168B2 (ja) | 2017-10-31 | 2023-03-23 | エンテックアジア株式会社 | 鉛蓄電池用セパレータおよび鉛蓄電池 |
Also Published As
Publication number | Publication date |
---|---|
US20070190426A1 (en) | 2007-08-16 |
JPWO2005083816A1 (ja) | 2007-11-29 |
CN1985385A (zh) | 2007-06-20 |
EP1720209B1 (en) | 2017-04-05 |
EP1720209A1 (en) | 2006-11-08 |
JP4789801B2 (ja) | 2011-10-12 |
US7939204B2 (en) | 2011-05-10 |
CN1985385B (zh) | 2010-10-13 |
EP1720209A4 (en) | 2007-10-03 |
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