JP2018121012A - 半導体封止用プリフォーム - Google Patents
半導体封止用プリフォーム Download PDFInfo
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- JP2018121012A JP2018121012A JP2017012892A JP2017012892A JP2018121012A JP 2018121012 A JP2018121012 A JP 2018121012A JP 2017012892 A JP2017012892 A JP 2017012892A JP 2017012892 A JP2017012892 A JP 2017012892A JP 2018121012 A JP2018121012 A JP 2018121012A
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- Prior art keywords
- preform
- semiconductor
- sealing
- alloy
- layer
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 79
- 238000007789 sealing Methods 0.000 title claims abstract description 46
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 12
- 229910052718 tin Inorganic materials 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 7
- 229910001128 Sn alloy Inorganic materials 0.000 claims abstract description 7
- 238000005538 encapsulation Methods 0.000 claims description 25
- 239000011159 matrix material Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000003566 sealing material Substances 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 238000009703 powder rolling Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 229910017482 Cu 6 Sn 5 Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/06—Containers; Seals characterised by the material of the container or its electrical properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/262—Sn as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/302—Cu as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C13/00—Alloys based on tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
- H01L23/3121—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed a substrate forming part of the encapsulation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Die Bonding (AREA)
Abstract
【解決手段】半導体封止用プリフォームは、金属または合金を主材としており、金属または合金は、SnまたはSn合金、CuまたはCu合金を含み、さらにCuとSnとの金属間化合物を少なくとも2重量%含有している。半導体素子の上に、半導体封止用プリフォームを置き、加熱・加圧して封止層300を形成することで、優れた耐熱性を有することができる。
【選択図】図5
Description
それに対して、フラックスを加えたプリフォームは、焼成時にフラックスが蒸発しにくい。また、フラックスがガスとなって蒸発した跡がボイドとなり、品質低下を招くこともある。
a:SAC305粉末。
b:金属間化合物をおよそ10〜20重量%含有させた、CuとSnの合金粉末。
c:SAC305粉末を30重量%、bに記載したCuとSnの合金粉末を35重量%、Cu粉末を35重量%、の割合で混合した粉末。
aのとき、溶融したSnが表面張力によって凝集している様子が見られる。それに対して、b、cのとき、溶融したSnの表面張力は低下し、凝集を防いでいる様子が見られる。
加熱する温度や時間などは、半導体封止用プリフォーム1の組成などにもよるが、本実施形態においては、徐々に温度を上げていき、約280℃で1〜20分保持した。
1a 半導体封止用多層プリフォーム
11 第1層
12 第2層
1n 第n層
21 半導体素子
22 電子回路
23 端子
24 配線部
300 封止層
301 空隙
500 基板
501 接合部
6 金属粉末
Claims (3)
- 金属または合金を主材とする、半導体封止用プリフォームであって、
前記金属または合金は、SnまたはSn合金、及び、CuまたはCu合金を含み、さらにCuとSnとの金属間化合物を少なくとも2重量%含有する、
半導体封止用プリフォーム。 - 少なくとも第1層と第2層とを有する、半導体封止用多層プリフォームであって、
前記第1層は、請求項1に記載された半導体封止用プリフォームから成る、半導体封止用多層プリフォーム。 - 半導体素子と、
前記半導体素子に電気的に接続される配線部と、
前記半導体素子を封止する封止層と、
を備える半導体装置であって、
前記封止層は、請求項1に記載された半導体封止用プリフォーム、または、請求項2に記載された半導体封止用多層プリフォームを用いて形成される、
半導体装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017012892A JP6144440B1 (ja) | 2017-01-27 | 2017-01-27 | 半導体封止用プリフォーム |
TW106114496A TWI620614B (zh) | 2017-01-27 | 2017-05-02 | 半導體封裝用預形體及半導體裝置 |
CN201710462567.4A CN108364914B (zh) | 2017-01-27 | 2017-06-19 | 半导体封装用压片 |
US15/630,599 US10629506B2 (en) | 2017-01-27 | 2017-06-22 | Preform for semiconductor encapsulation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017012892A JP6144440B1 (ja) | 2017-01-27 | 2017-01-27 | 半導体封止用プリフォーム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP6144440B1 JP6144440B1 (ja) | 2017-06-07 |
JP2018121012A true JP2018121012A (ja) | 2018-08-02 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017012892A Active JP6144440B1 (ja) | 2017-01-27 | 2017-01-27 | 半導体封止用プリフォーム |
Country Status (4)
Country | Link |
---|---|
US (1) | US10629506B2 (ja) |
JP (1) | JP6144440B1 (ja) |
CN (1) | CN108364914B (ja) |
TW (1) | TWI620614B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20230153361A (ko) | 2021-03-02 | 2023-11-06 | 미쓰비시 마테리알 가부시키가이샤 | 프리폼 층이 형성된 접합용 시트, 접합체의 제조 방법,및 프리폼 층이 형성된 피접합 부재 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017206932A1 (de) * | 2017-04-25 | 2018-10-25 | Siemens Aktiengesellschaft | Lotformteil zum Erzeugen einer Diffusionslötverbindung und Verfahren zum Erzeugen eines Lotformteils |
JP6890201B1 (ja) * | 2020-08-27 | 2021-06-18 | 有限会社 ナプラ | 接合材用合金インゴット |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002124533A (ja) * | 2000-10-18 | 2002-04-26 | Toshiba Corp | 電極材料、半導体装置及び実装装置 |
JP2006203149A (ja) * | 2004-12-24 | 2006-08-03 | Fujitsu Media Device Kk | 電子部品及びその製造方法 |
WO2008026761A1 (fr) * | 2006-09-01 | 2008-03-06 | Senju Metal Industry Co., Ltd. | Couvercle pour une pièce fonctionnelle et son procédé de production |
JP2011062736A (ja) * | 2009-09-18 | 2011-03-31 | Sanyo Special Steel Co Ltd | 鉛フリー高温用接合材料 |
JP2013172055A (ja) * | 2012-02-22 | 2013-09-02 | Panasonic Corp | コイル部品およびその製造方法 |
WO2014168027A1 (ja) * | 2013-04-09 | 2014-10-16 | 千住金属工業株式会社 | ソルダペースト |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7771547B2 (en) * | 1998-07-13 | 2010-08-10 | Board Of Trustees Operating Michigan State University | Methods for producing lead-free in-situ composite solder alloys |
US6479920B1 (en) * | 2001-04-09 | 2002-11-12 | Wisconsin Alumni Research Foundation | Direct charge radioisotope activation and power generation |
US20050253282A1 (en) * | 2004-04-27 | 2005-11-17 | Daoqiang Lu | Temperature resistant hermetic sealing formed at low temperatures for MEMS packages |
JP4934456B2 (ja) * | 2006-02-20 | 2012-05-16 | 古河電気工業株式会社 | めっき材料および前記めっき材料が用いられた電気電子部品 |
JP2011080796A (ja) | 2009-10-05 | 2011-04-21 | Mitsubishi Electric Corp | 半導体素子のパッケージおよびそのテストソケット |
US9095448B2 (en) | 2010-05-04 | 2015-08-04 | Depuy International Limited | Method of using an alignment guide |
TWI464031B (zh) * | 2011-12-14 | 2014-12-11 | Univ Yuan Ze | 抑制柯肯達爾孔洞形成於銲料與銅銲墊之間的方法 |
JP2013207213A (ja) * | 2012-03-29 | 2013-10-07 | Tdk Corp | 電子部品モジュール及びその製造方法 |
RU2650386C2 (ru) * | 2013-03-14 | 2018-04-11 | Мэтерион Корпорейшн | Улучшение формуемости деформируемых сплавов медь-никель-олово |
EP2947175A1 (en) * | 2014-05-21 | 2015-11-25 | Heraeus Deutschland GmbH & Co. KG | CuSn, CuZn and Cu2ZnSn sputter targets |
JP6254509B2 (ja) * | 2014-11-07 | 2017-12-27 | 信越化学工業株式会社 | 電磁波シールド性支持基材付封止材及び封止後半導体素子搭載基板、封止後半導体素子形成ウエハ並びに半導体装置 |
US9953929B2 (en) * | 2016-03-18 | 2018-04-24 | Intel Corporation | Systems and methods for electromagnetic interference shielding |
-
2017
- 2017-01-27 JP JP2017012892A patent/JP6144440B1/ja active Active
- 2017-05-02 TW TW106114496A patent/TWI620614B/zh active
- 2017-06-19 CN CN201710462567.4A patent/CN108364914B/zh active Active
- 2017-06-22 US US15/630,599 patent/US10629506B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002124533A (ja) * | 2000-10-18 | 2002-04-26 | Toshiba Corp | 電極材料、半導体装置及び実装装置 |
JP2006203149A (ja) * | 2004-12-24 | 2006-08-03 | Fujitsu Media Device Kk | 電子部品及びその製造方法 |
WO2008026761A1 (fr) * | 2006-09-01 | 2008-03-06 | Senju Metal Industry Co., Ltd. | Couvercle pour une pièce fonctionnelle et son procédé de production |
JP2011062736A (ja) * | 2009-09-18 | 2011-03-31 | Sanyo Special Steel Co Ltd | 鉛フリー高温用接合材料 |
JP2013172055A (ja) * | 2012-02-22 | 2013-09-02 | Panasonic Corp | コイル部品およびその製造方法 |
WO2014168027A1 (ja) * | 2013-04-09 | 2014-10-16 | 千住金属工業株式会社 | ソルダペースト |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20230153361A (ko) | 2021-03-02 | 2023-11-06 | 미쓰비시 마테리알 가부시키가이샤 | 프리폼 층이 형성된 접합용 시트, 접합체의 제조 방법,및 프리폼 층이 형성된 피접합 부재 |
Also Published As
Publication number | Publication date |
---|---|
US20180218954A1 (en) | 2018-08-02 |
TW201827154A (zh) | 2018-08-01 |
JP6144440B1 (ja) | 2017-06-07 |
CN108364914A (zh) | 2018-08-03 |
TWI620614B (zh) | 2018-04-11 |
US10629506B2 (en) | 2020-04-21 |
CN108364914B (zh) | 2021-07-30 |
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