WO2005049515A1 - 光ファイバ母材及びその製造方法 - Google Patents
光ファイバ母材及びその製造方法 Download PDFInfo
- Publication number
- WO2005049515A1 WO2005049515A1 PCT/JP2004/017105 JP2004017105W WO2005049515A1 WO 2005049515 A1 WO2005049515 A1 WO 2005049515A1 JP 2004017105 W JP2004017105 W JP 2004017105W WO 2005049515 A1 WO2005049515 A1 WO 2005049515A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical fiber
- fiber preform
- manufacturing
- deposition
- parner
- Prior art date
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 35
- 239000011521 glass Substances 0.000 claims abstract description 7
- 238000000151 deposition Methods 0.000 claims description 37
- 230000008021 deposition Effects 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 12
- 239000000567 combustion gas Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 3
- 239000004071 soot Substances 0.000 description 10
- 238000004017 vitrification Methods 0.000 description 7
- 238000005253 cladding Methods 0.000 description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 241001192924 Parna Species 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01413—Reactant delivery systems
- C03B37/0142—Reactant deposition burners
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01486—Means for supporting, rotating or translating the preforms being formed, e.g. lathes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/60—Relationship between burner and deposit, e.g. position
- C03B2207/66—Relative motion
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/70—Control measures
Definitions
- the present invention relates to an optical fiber preform that is a precursor of an optical fiber and a method for producing the same.
- a soot body is synthesized by causing a parner or a starting member to reciprocate along the rotating starting member along with the reciprocating motion, and depositing and depositing glass fine particles generated in the parna flame.
- the external method (OVD method) of dehydrating and sintering in an electric furnace to form a transparent glass (OVD method) has a relatively arbitrary refractive index distribution, and is capable of mass-producing a large-diameter optical fiber preform. It is widely used.
- Patent Document 1 As a method of obtaining a stable core-Z clad ratio in the longitudinal direction in an optical fiber preform after vitrification, for example, a method described in Patent Document 1 can be mentioned. Further, as a method of changing the gas amount near the turning point of the relative reciprocating movement of both ends, a method described in Patent Document 2 can be mentioned.
- Patent Document 1 JP-A-09-118538
- Patent document 2 JP-A-2000-159533
- Patent Document 1 The method described in Patent Document 1 employs an external method, and changes the relative reciprocating movement speed in the longitudinal direction to deposit, stabilizes the core Z clad ratio after sintering and transparent vitrification. ing. However, in this method, it is difficult to adjust the amount of deposition at the turning point of the relative reciprocating movement due to adjustment during movement.
- Patent Document 2 aims at preventing cracking and cracking of a soot body during deposition. This method changes the supply gas amount, relative movement speed, and the distance between the parner and the preform during reciprocation. It is difficult.
- the optical fiber preform after the vitrification has a stable core-Z clad ratio in the longitudinal direction over the range of the relative reciprocation of the starting member and the parner. It is important to deposit. However, near the turning point of the relative reciprocating movement, the amount of adhesion fluctuates more than in other parts.
- An object of the present invention is to provide an optical fiber preform from which an optical fiber preform having a stable core-Z cladding ratio in the longitudinal direction can be easily obtained, and a method for manufacturing the same.
- the inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, the relative movement at the turning point of the relative reciprocal movement has been set so that the core Z clad ratio after vitrification becomes stable in the longitudinal direction.
- the relative movement at the turning point of the relative reciprocal movement has been set so that the core Z clad ratio after vitrification becomes stable in the longitudinal direction.
- an external method is used to relatively reciprocate a parner along the starting member to deposit glass particles to produce an optical fiber preform.
- the parner and the starting member are relatively reciprocated, and when the relative reciprocating movement is turned back, the stop is performed for a predetermined time, and the stop time is 3 seconds or more. It is preferably set to 60 seconds or less.
- the deposition conditions may be changed by decreasing the amount of combustion gas or increasing the amount of source gas, and furthermore, the deposition time, deposition weight, or phase It is preferable to set any one of the number of reciprocating movements, and to change the stop time of the relative reciprocating movement continuously or stepwise according to the set conditions.
- the stop time may be set to be constant during the manufacturing.
- the longer the deposition time the longer the predetermined time for stopping the parner may be.
- the predetermined time may be set longer as the deposition weight increases. Ma
- the predetermined time may be set longer as the number of reciprocations increases.
- FIG. 1 is a schematic view showing an example of an apparatus used for manufacturing an optical fiber preform of the present invention.
- FIG. 2 is a graph showing a stop time pattern of Example 3.
- FIG. 1 shows an example of an apparatus used for manufacturing an optical fiber preform of the present invention.
- a starting member 1 is a core or a part of a core and a clad. It is rotatably supported around its axis by a member. 2 are arranged, and are movably installed to the left and right by a burner guide mechanism 3. Note that, instead of moving the deposition parner 2, a mechanism for moving the starting member 1 in the longitudinal direction may be provided.
- the deposition parner 2 While rotating the starting member 1 around the axis by the motor 4, the deposition parner 2 is moved along the starting member 1 by the burner guide mechanism 3, and a flame is injected from the deposition parner 2 toward the starting member 1. I do.
- An oxyhydrogen flame burner is generally used for the deposition parner 2, and a fiber raw material, for example, a vapor of SiC14 or the like and a combustion gas (hydrogen gas and oxygen gas) are sprayed thereon, and the oxyhydrogen flame is used.
- the glass particles (soot) synthesized by the flame hydrolysis reaction are deposited on the starting member 1 to form the soot body 5.
- the relative reciprocating movement is stopped for a predetermined time at a turning point of the deposition parner 2 which reciprocates relatively along the starting member 1, and during this stopping time, the combustion gas and the Z or fiber raw material are stopped. It is characterized in that the amount of soot deposited near the turning point of the relative reciprocating movement is changed by changing the supply amount of soot.
- the soot deposition amount changes as compared with other portions. Therefore, by changing the supply amount of the combustion gas and Z or the fiber material at the turning point in anticipation of the change amount, it is possible to avoid problems such as warts, cracks, peeling of the deposited layer, and irregularities.
- An optical fiber preform having a uniform shape and a uniform core Z cladding ratio in the longitudinal direction can be manufactured.
- the stopping time at the turning point can be adjusted to 3 seconds or more and 60 seconds or less, whereby the amount of deposition near the turning point can be adjusted, and the core Z clad ratio after vitrification becomes lower at the end. It was found that a stable optical fiber preform could be obtained in the longitudinal direction. If the stop time is less than 3 seconds, the time is too short and there is no change in the deposition amount. On the other hand, if it exceeds 60 seconds, problems such as warts, cracks, peeling of the deposited layer, and unevenness will occur due to the change in soot density and the deposited amount caused by the change in the deposited amount during this time.
- the stop time at the turning point does not need to be constant during manufacturing,
- the amount of deposition can be changed effectively by changing continuously or stepwise by factors such as weight and the number of relative reciprocating movements.
- the longer the deposition time the longer the predetermined time for stopping the parner may be.
- the predetermined time may be set longer as the deposition weight increases.
- the predetermined time may be set longer as the number of reciprocations increases.
- an optical fiber preform was manufactured by an external method.
- the starting member 1 was a quartz glass rod having an outer diameter of 30 mm and a length of 1.5 m. This is attached to a motor 4 via a base material support member (not shown) and rotated at 30 rpm, and is fed to a deposition burner 2 as a flame forming gas from a raw material supply device (not shown). 18 L (liter) of gas, 45 LZ of hydrogen gas, 3 LZ of oxygen gas as a carrier gas, and 1.8 LZ of SiC14 glass source gas were supplied.
- An optical fiber preform was manufactured in the same manner as in Example 1 using the apparatus shown in FIG.
- a quartz glass rod having an outer diameter of 30 mm and a length of 1.5 m was attached to the motor 5, rotated at 30 rpm, and deposition was continued under the same gas supply conditions as in Example 1.
- the stop time at the turning point is set to 10 seconds, and the gas supply conditions during the stop time are the same as the gas supply conditions during the traverse and the combustion gas (hydrogen gas). And the oxygen gas were increased to 75%, and a trial 2 in which the fiber material (SiC14) was increased by a factor of 1.25 was produced and compared.
- An optical fiber preform was manufactured in the same manner as in Example 1 using the apparatus shown in FIG.
- a quartz glass rod having an outer diameter of 30 mm and a length of 1.5 m was attached to the motor 5, rotated at 30 rpm, and deposition was continued under the same gas supply conditions as in Example 1.
- An optical fiber preform having a uniform core-Z cladding ratio in the longitudinal direction can be provided.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04818938A EP1688396A1 (en) | 2003-11-19 | 2004-11-17 | Optical fiber base body and method of manufacturing the same |
KR1020067010294A KR101226785B1 (ko) | 2003-11-19 | 2004-11-17 | 광섬유 모재 및 그 제조 방법 |
US10/579,760 US20070095106A1 (en) | 2003-11-19 | 2004-11-17 | Optical fiber base material and manufacturing method of the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003389848A JP4140839B2 (ja) | 2003-11-19 | 2003-11-19 | 光ファイバ母材の製造方法 |
JP2003-389848 | 2003-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005049515A1 true WO2005049515A1 (ja) | 2005-06-02 |
Family
ID=34616271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017105 WO2005049515A1 (ja) | 2003-11-19 | 2004-11-17 | 光ファイバ母材及びその製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070095106A1 (ja) |
EP (1) | EP1688396A1 (ja) |
JP (1) | JP4140839B2 (ja) |
KR (1) | KR101226785B1 (ja) |
CN (1) | CN1882512A (ja) |
TW (1) | TW200519060A (ja) |
WO (1) | WO2005049515A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10464838B2 (en) * | 2015-01-13 | 2019-11-05 | Asi/Silica Machinery, Llc | Enhanced particle deposition system and method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63170223A (ja) * | 1986-12-30 | 1988-07-14 | Furukawa Electric Co Ltd:The | 多孔質ガラス母材の製造方法 |
JPH02289439A (ja) * | 1989-04-28 | 1990-11-29 | Fujikura Ltd | 光ファイバ母材の製造方法 |
JPH09278477A (ja) * | 1996-04-10 | 1997-10-28 | Fujikura Ltd | 光ファイバ用ガラス母材の製造方法 |
JPH1081537A (ja) * | 1996-09-02 | 1998-03-31 | Furukawa Electric Co Ltd:The | 多孔質光ファイバ母材の製造方法 |
JP2000185930A (ja) * | 1998-12-24 | 2000-07-04 | Mitsubishi Cable Ind Ltd | 光ファイバ母材の製造方法 |
JP2000256034A (ja) * | 1999-03-10 | 2000-09-19 | Fujikura Ltd | 光ファイバ用母材の製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100540492B1 (ko) * | 1997-08-19 | 2006-01-12 | 피렐리 카비 에 시스테미 소시에떼 퍼 아찌오니 | 광섬유 모재의 제조방법 및 제조장치 |
KR100280049B1 (ko) * | 1999-01-13 | 2001-01-15 | 윤종용 | 광섬유 모재 제조방법 |
AU774859B2 (en) * | 2000-10-30 | 2004-07-08 | Sumitomo Electric Industries, Ltd. | Method of manufacturing optical fiber preform |
DE60108595T2 (de) * | 2000-11-29 | 2005-12-22 | Sumitomo Electric Industries, Ltd. | Verfahren zum Herstellen einer Vorform für optische Fasern durch Aussenabscheidung aus der Dampfphase |
JP3512027B2 (ja) * | 2001-09-20 | 2004-03-29 | 住友電気工業株式会社 | 多孔質母材の製造方法 |
-
2003
- 2003-11-19 JP JP2003389848A patent/JP4140839B2/ja not_active Expired - Fee Related
-
2004
- 2004-11-17 WO PCT/JP2004/017105 patent/WO2005049515A1/ja not_active Application Discontinuation
- 2004-11-17 US US10/579,760 patent/US20070095106A1/en not_active Abandoned
- 2004-11-17 EP EP04818938A patent/EP1688396A1/en not_active Withdrawn
- 2004-11-17 KR KR1020067010294A patent/KR101226785B1/ko active IP Right Grant
- 2004-11-17 CN CNA200480034134XA patent/CN1882512A/zh active Pending
- 2004-11-19 TW TW093135550A patent/TW200519060A/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63170223A (ja) * | 1986-12-30 | 1988-07-14 | Furukawa Electric Co Ltd:The | 多孔質ガラス母材の製造方法 |
JPH02289439A (ja) * | 1989-04-28 | 1990-11-29 | Fujikura Ltd | 光ファイバ母材の製造方法 |
JPH09278477A (ja) * | 1996-04-10 | 1997-10-28 | Fujikura Ltd | 光ファイバ用ガラス母材の製造方法 |
JPH1081537A (ja) * | 1996-09-02 | 1998-03-31 | Furukawa Electric Co Ltd:The | 多孔質光ファイバ母材の製造方法 |
JP2000185930A (ja) * | 1998-12-24 | 2000-07-04 | Mitsubishi Cable Ind Ltd | 光ファイバ母材の製造方法 |
JP2000256034A (ja) * | 1999-03-10 | 2000-09-19 | Fujikura Ltd | 光ファイバ用母材の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4140839B2 (ja) | 2008-08-27 |
KR101226785B1 (ko) | 2013-01-25 |
CN1882512A (zh) | 2006-12-20 |
US20070095106A1 (en) | 2007-05-03 |
JP2005145798A (ja) | 2005-06-09 |
KR20060109473A (ko) | 2006-10-20 |
TW200519060A (en) | 2005-06-16 |
EP1688396A1 (en) | 2006-08-09 |
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