JP2563461B2 - Electric double layer capacitor - Google Patents
Electric double layer capacitorInfo
- Publication number
- JP2563461B2 JP2563461B2 JP63081564A JP8156488A JP2563461B2 JP 2563461 B2 JP2563461 B2 JP 2563461B2 JP 63081564 A JP63081564 A JP 63081564A JP 8156488 A JP8156488 A JP 8156488A JP 2563461 B2 JP2563461 B2 JP 2563461B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- electric double
- double layer
- electrode plate
- layer capacitor
- 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 - Fee Related
Links
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電子部品および電池に関するものであり、
電気ニ重層キャパシタの高性能化、高信頼性化に関する
ものである。TECHNICAL FIELD The present invention relates to an electronic component and a battery,
The present invention relates to high performance and high reliability of electric double layer capacitors.
従来の技術 コイン型電気二重層キャパシタを例に挙げて従来のコ
イン型電子部品の外装について述べる。第４図は、従来
のコイン型電気二重層キャパシタの断面を示すものであ
る。活性炭繊維からなる分極性電極40,41導電性集電極4
2,43セパレータ44がステンレスなどの金属より成るケー
ス45,46とポリプロピレンなどから成るガスケットリン
グ47を介して封口される。分極性電極40,41およびセパ
レータ44には電解液が含浸されている。電解液として
は、テトラエチルアンモニウムパークロレートのプロピ
レンカーボネート溶液のような有機電解液や硫酸のよう
な水溶液が用いられている。2. Description of the Related Art The exterior of a conventional coin-type electronic component will be described taking a coin-type electric double layer capacitor as an example. FIG. 4 shows a cross section of a conventional coin type electric double layer capacitor. Polarizable electrodes 40, 41 made of activated carbon fiber Conductive collector electrode 4
The 2,43 separator 44 is sealed via cases 45 and 46 made of metal such as stainless steel and a gasket ring 47 made of polypropylene or the like. The polarizable electrodes 40, 41 and the separator 44 are impregnated with an electrolytic solution. As the electrolytic solution, an organic electrolytic solution such as a propylene carbonate solution of tetraethylammonium perchlorate or an aqueous solution such as sulfuric acid is used.
発明が解決しようとする課題 従来のこの様な外装法では外装時にケース45と46とガ
スケットリング47とにブレス加圧して電解液のケースか
らの漏洩を防いでいる。すなはち金属製のケースが樹脂
製のガスケットリングに食い込むことによって電解液の
漏洩を防いでいる。しかしながら、高温高湿環境下での
使用や使用電圧を高くしたときなど、従来の外装方式で
は電解液の漏洩は免れえない。このことは回路や製品の
破損につながり改善せねばならないことである。Problems to be Solved by the Invention In such a conventional packaging method, the cases 45 and 46 and the gasket ring 47 are pressed under pressure during packaging to prevent the electrolyte from leaking from the case. That is, the metal case prevents the electrolyte from leaking by digging into the resin gasket ring. However, leakage of the electrolyte is inevitable with the conventional exterior method such as when used in a high temperature and high humidity environment or when the operating voltage is increased. This leads to damage to circuits and products and must be improved.
課題を解決するための手段 本発明は、電極板とこの電極板の一部と結合したガラ
ス絶縁層とこのガラス絶縁層と結合した導電性板と、電
極板の一部と接触する分極性電極と、セパレータ、電解
液を介した分極性電極と、これの一部と接触する導電性
ケースとから成り前記導電性と導電性ケースとが電気的
に結合された構造を有する電子部品または電池である。Means for Solving the Problems The present invention provides an electrode plate, a glass insulating layer bonded to a part of the electrode plate, a conductive plate bonded to the glass insulating layer, and a polarizable electrode contacting a part of the electrode plate. And a separator, a polarizable electrode via an electrolytic solution, and a conductive case in contact with a part thereof, and an electronic component or battery having a structure in which the conductive case and the conductive case are electrically coupled. is there.
作用 本発明によればガラス−金属間結合を利用したいわゆ
るハーメチックシール型の両極絶縁構造とレーザ封口の
ような金属−金属間結合により電子部品あるいは電池の
高い気密性が保持される。電極板と導電板との結合にガ
ラスシートを溶融して接着しているために高さの低い導
電性ケースを用いることによりいわゆるコイン型もしく
はボタン型の電子部品や電池を作ることも可能になり、
電解液の漏液の全くない信頼性の高いコイン型電子部品
などを得ることができる。Action According to the present invention, a so-called hermetically sealed bipolar insulating structure utilizing a glass-metal bond and a metal-metal bond such as a laser sealing can maintain high airtightness of an electronic component or a battery. It is also possible to make so-called coin-type or button-type electronic parts and batteries by using a low-height conductive case because the glass sheet is fused and bonded to the connection between the electrode plate and the conductive plate. ,
It is possible to obtain a highly reliable coin-type electronic component having no electrolyte leakage.
実施例 以下に図面にしたがって本発明の具体的な実施例を示
す。Examples Specific examples of the present invention will be described below with reference to the drawings.
（実施例１） 第１図に示す円形電極板１およびドーナツ状導電性板
（Fe−Cr系ステンレスSUS430製,A＝14mm,B＝12mm,C＝16
mm）２を第１図に示すガラスシート製リング（Ｄ＝12m
m,E＝15mm）３をはさんで接着し蓋部４を作る。ガラス
シート製リング３は硼珪酸ガラス粉末を有機樹脂バイン
ダと共に紙に印刷したものを加工したものであり接着の
時に水に浸せばガラスリングのみになる。これを1,2の
間にはさんで800℃で10分間焼成し両者を接着する。こ
の時1,2それぞれの片側にガラスリングを溶融接着し引
き続き両者のガラス部を接触加熱することによって接着
を行ってもよい。５はガラス絶縁層である。つぎに活性
炭繊維布（200g/m2）の片面にプラズマ溶射法により厚
さ100μｍのアルミニウム層を形成する。これを直径10m
mに打ち抜き分極性電極７とする。これをアルミニウム
層６が電極板11と接するように配置し両者を熔接する。Example 1 A circular electrode plate 1 and a donut-shaped conductive plate (made of Fe-Cr type stainless steel SUS430, A = 14 mm, B = 12 mm, C = 16) shown in FIG.
mm) 2 is a glass sheet ring shown in FIG. 1 (D = 12 m
m, E = 15mm) 3 is attached and glued to make lid 4. The glass sheet ring 3 is made by printing a borosilicate glass powder on paper together with an organic resin binder, and if it is immersed in water at the time of adhesion, only the glass ring is formed. This is sandwiched between 1 and 2 and baked at 800 ° C for 10 minutes to bond them. At this time, a glass ring may be melt-bonded to one side of each of the 1 and 2 and then the glass portions of both may be contact-heated to perform the bonding. 5 is a glass insulating layer. Next, an aluminum layer having a thickness of 100 μm is formed on one surface of the activated carbon fiber cloth (200 g / m 2 ) by the plasma spraying method. This is 10m in diameter
A polarizable electrode 7 is punched out in m. This is arranged so that the aluminum layer 6 contacts the electrode plate 11, and both are welded.
一方、SUS430よりなるケース（Ｆ＝1.5mm）８にこの
ケースに接するように前記活性炭繊維分極性電極を配置
する。このときも両者の間を熔接で接合する。9,10はそ
れぞれ活性炭繊維布およびアルミニウム層である。前記
の分極性電極を接着した蓋部４および分極性電極を接着
したケース部11をポリプロピレンからなるセパレータ12
を介して対向配置する。セパレータおよび分極性電極に
はプロピレンカーボネートにテトラエチルアンモニウム
パークロレートを溶解した電解液が含浸される。蓋部４
とケース部11との接合は外周部13のYAGレーザによるレ
ーザ封口法を採用した。14は完成素子の断面図である。On the other hand, the activated carbon fiber polarizable electrode is placed in a case (F = 1.5 mm) 8 made of SUS430 so as to be in contact with this case. At this time as well, the two are joined by welding. 9 and 10 are activated carbon fiber cloth and aluminum layer, respectively. The lid portion 4 to which the polarizable electrode is adhered and the case portion 11 to which the polarizable electrode is adhered are formed of a polypropylene separator 12
To face each other. The separator and the polarizable electrode are impregnated with an electrolytic solution prepared by dissolving tetraethylammonium perchlorate in propylene carbonate. Lid 4
A laser sealing method using a YAG laser for the outer peripheral portion 13 was used to join the case 11 and the case 11. 14 is a sectional view of the completed element.
なお、上記実施例ではガラス材料として硼珪酸ガラス
を用いたが、第１表〜第４表に示す組成のものでもよ
い。Although borosilicate glass was used as the glass material in the above examples, the compositions shown in Tables 1 to 4 may be used.
また、第１表に示した鉛系ガラスは次のような組成範
囲のものが好ましい。SiO210〜30wt％、B2O310〜30wt
％,PbO70〜85wt％,ZnO0〜10wt％,Al2O30〜10wt％。また
第２表に示したホウ珪酸ガラスも次のような組成範囲の
ものが好ましい。すなわち、SiO240〜55wt％、B2O310〜
20wt％,Na2O15〜25wt％,K2O1〜7wt％、Li2O1〜10wt％Al
2O38〜15wt％,CaO1〜5wt％。さらに第３表に示した無ア
ルカリホウケイ酸ガラスも次のような組成範囲のものが
好ましい。SiO210〜23wt％、B2O312〜34wt％,BaO16〜50
wt％,MgO16〜42wt％、ZnO0〜11wt％ ZrO20〜5wt％、Al
2O30〜5wt％、SnO20〜5wt％。第４表に示したガラスは
チタン乳白フリットと呼ばれるものである。Further, the lead-based glass shown in Table 1 preferably has the following composition range. SiO 2 10~30wt%, B 2 O 3 10~30wt
%, PbO 70 to 85 wt%, ZnO 0 to 10 wt%, Al 2 O 3 0 to 10 wt%. Also, the borosilicate glass shown in Table 2 preferably has the following composition range. That is, SiO 2 40-55 wt%, B 2 O 3 10-
20wt%, Na 2 O 15 to 25wt%, K 2 O 1 to 7wt%, Li 2 O 1 to 10wt% Al
2 O 3 8-15 wt%, CaO 1-5 wt%. Further, the alkali-free borosilicate glass shown in Table 3 preferably has the following composition range. SiO 2 10~23wt%, B 2 O 3 12~34wt%, BaO16~50
wt%, MgO16~42wt%, ZnO0~11wt% ZrO 2 0~5wt%, Al
2 O 3 0~5wt%, SnO 2 0~5wt%. The glass shown in Table 4 is called titanium opal frit.
ガラスと平板電極の焼成は、第１表に示した組成のも
のが450℃、第２表および第３表に示すものが890℃、第
４表に示すものが810℃である。The glass and flat plate electrodes were fired at 450 ° C. for the compositions shown in Table 1, 890 ° C. for those shown in Tables 2 and 3, and 810 ° C. for those shown in Table 4.
以上のようにして作製した第１図に示した構成のコイ
ン型キャパシタを85℃の雰囲気下で2.4V常時直流電圧を
印加し10,000時間後のキャパシタ特性（容量減少率）と
漏液の状態を顕微鏡で調べた結果を第５表に示す。第５
表には、封口ガラス組成の組み合わせを示す。試験した
サンプル数は各100個であった。 The coin-type capacitor having the structure shown in FIG. 1 manufactured as described above was applied with a constant DC voltage of 2.4 V in an atmosphere of 85 ° C., and the capacitor characteristics (capacity reduction rate) and leakage state after 10,000 hours were measured. The results of examination with a microscope are shown in Table 5. Fifth
The table shows the combinations of sealing glass compositions. The number of samples tested was 100 each.
本実施例のガラスは膨張係数がいずれも85〜170×10
-7℃-1と平板電極120×10-7℃-1と近く熱的歪が小さか
った。他の組成を有するガラスはガラスと平板電極との
焼成時にクラックが入ったり、接着強度が十分でなかっ
た。The glass of this example has an expansion coefficient of 85 to 170 × 10.
The thermal strain was small, close to -7 ℃ -1 and flat plate electrode 120 × 10 -7 ℃ -1 . Glass having other compositions had cracks or insufficient adhesive strength during firing of the glass and the flat plate electrode.
（実施例２） 実施例１のレーザ封口時に蓋部（４）とケース部（1
1）との間に圧力（10Kg/cm2）を加えセパレータを介し
た二つの分極性電極の接触をより強固にする。 (Embodiment 2) The lid portion (4) and the case portion (1
A pressure (10 Kg / cm 2 ) is applied between and 1) to strengthen the contact between the two polarizable electrodes through the separator.
（実施例５） 第２図に示す電気二重層キャパシタ。15,16は上部金
属部、17はガラス絶縁部、18は下部金属板19,20,21はそ
れぞれ活性炭繊維布、アルミニウム層、ポリプロン製セ
パレータであり、これらには実施例１と同じ電解液が含
浸されている。蓋部とケース部とは22部分で円周上が抵
抗熔接されている。(Embodiment 5) The electric double layer capacitor shown in FIG. 15, 16 is an upper metal part, 17 is a glass insulating part, 18 is a lower metal plate 19, 20, 21 are activated carbon fiber cloth, an aluminum layer, and a separator made of polypropylene, respectively. It is impregnated. The lid portion and the case portion are resistance welded on the circumference at 22 portions.
（実施例６） 第３図に示す電気二重層キャパシタ。25,26は金属
部、27はガラス絶縁部、28は金属ケース、29,30,31はそ
れぞれ活性炭繊維布、アルミニウム層、セパレータであ
り、これらには実施例１と同じ電解液が願浸されてい
る。蓋部とケース部とは32の部分で円周上がレーザ溶接
されている。Example 6 The electric double layer capacitor shown in FIG. Reference numerals 25 and 26 are metal parts, 27 is a glass insulating part, 28 is a metal case, and 29, 30, and 31 are activated carbon fiber cloth, aluminum layer, and separator, respectively, and the same electrolytic solution as in Example 1 is impregnated therein. ing. The lid portion and the case portion are laser welded on the circumference at 32 portions.
以上の実施例で得られた電子部品または電池の特性お
よび信頼性テストの結果を第６表に示す。比較例１は実
施例１の封口にポリプロピレン製のガスケットリングを
用いた電気ニ重層キャパシタである。Table 6 shows the results of the characteristics and reliability tests of the electronic components or batteries obtained in the above examples. Comparative Example 1 is an electric double layer capacitor using a polypropylene gasket ring for the sealing of Example 1.
発明の効果 以上のように、本発明によればガラス−金属間結合
や、金属−金属間結合による高い気密性を活かした形で
構成される。この結果従来のガスケットリング封口方式
のときのような電解液の漏液による事故を全くなくする
ことができた。 EFFECTS OF THE INVENTION As described above, according to the present invention, the glass-metal bond and the metal-metal bond are used to make use of high airtightness. As a result, it was possible to completely eliminate the accident caused by the leakage of the electrolytic solution as in the conventional gasket ring sealing method.
第１図は本発明の一実施例のエネルギー貯蔵装置である
電気二重層キャパシタの製造プロセス図、第２図は本発
明の他の実施例のエネルギー貯蔵装置の断面構造図、第
３図は本発明の他の実施例のエネルギー貯蔵装置の断面
構造図、第４図は従来例の電気二重層キャパシタの断面
構造図である。 １……円形電極板、２……ドーナツ状導電性板、３……
ガラスシート製リング、５……ガラス絶縁層、６……ア
ルミニウム層、7,9……活性炭布繊維、８……ケース、1
0……アルミニウム層、12……セパレータ。FIG. 1 is a manufacturing process diagram of an electric double layer capacitor which is an energy storage device according to an embodiment of the present invention, FIG. 2 is a sectional structural view of an energy storage device according to another embodiment of the present invention, and FIG. FIG. 4 is a sectional structural view of an energy storage device of another embodiment of the invention, and FIG. 4 is a sectional structural view of an electric double layer capacitor of a conventional example. 1 ... Circular electrode plate, 2 ... Donut-shaped conductive plate, 3 ...
Glass sheet ring, 5 ... Glass insulating layer, 6 ... Aluminum layer, 7,9 ... Activated carbon cloth fiber, 8 ... Case, 1
0 …… Aluminum layer, 12 …… Separator.
フロントページの続き (72)発明者 池田 正樹 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 棚橋 一郎 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭52−101432（ＪＰ，Ａ) 実開 昭60−129067（ＪＰ，Ｕ)Front page continuation (72) Inventor Masaki Ikeda 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor, Ichiro Tanahashi 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. ) References Japanese Unexamined Patent Publication No. 52-101432 (JP, A) Actual No. 60-129067 (JP, U)
Claims (3)
にリング状に存在し前記電極板とガラス−金属間結合に
より結合されたガラス絶縁層と、このガラス絶縁層を介
して、前記電極板の直径より外径が大きく内径の小さな
リング状の導電性板と、ガラス−金属間結合により結合
された導電性ケースと、前記電極板の一部と接触した分
極性電極と、セパレータと、電解液と、前記導電性ケー
スの一部と接触した他の分極性電極とからなる電気二重
層キャパシタで、前記ガラスが、SiO210〜30wt％、B2O3
10〜30wt％、PbO70〜85wt％、ZnO0〜10wt％、Al2O30〜1
0wt％からなる鉛系ガラス、またはSiO240〜55wt％、B2O
310〜20wt％、Na2O15〜25wt％、K2O1〜7wt％、Li2O1〜1
0wt％、Al2O38〜15wt％、CaO1〜5wt％からなるホウケイ
酸ガラス、またはSiO210〜23wt％、B2O312〜34wt％、Ba
O16〜50wt％、MgO16〜42wt％、ZnO0〜11wt％、ZrO20〜5
wt％、Al2O30〜5wt％、SnO20〜5wt％からなる無アルカ
リホウケイ酸ガラス、又はチタン乳白フリット組成のガ
ラスのいずれかであることを特徴とする電気二重層キャ
パシタ。1. A disk-shaped electrode plate, a glass insulating layer which is present in a ring shape at an edge portion of the outer periphery of the electrode plate and which is bonded to the electrode plate by a glass-metal bond, and the glass insulating layer. A ring-shaped conductive plate having an outer diameter larger than the diameter of the electrode plate and a small inner diameter, a conductive case coupled by a glass-metal bond, and a polarizable electrode in contact with a part of the electrode plate. An electric double layer capacitor comprising a separator, an electrolytic solution, and another polarizable electrode in contact with a part of the conductive case, wherein the glass is SiO 2 10 to 30 wt%, B 2 O 3
10-30wt%, PbO 70-85wt%, ZnO 0-10wt%, Al 2 O 3 0-1
Lead-based glass consisting of 0 wt%, or SiO 2 40-55 wt%, B 2 O
3 10~20wt%, Na 2 O15~25wt% , K 2 O1~7wt%, Li 2 O1~1
Borosilicate glass consisting of 0 wt%, Al 2 O 3 8-15 wt%, CaO 1-5 wt%, or SiO 2 10-23 wt%, B 2 O 3 12-34 wt%, Ba
O16~50wt%, MgO16~42wt%, ZnO0~11wt% , ZrO 2 0~5
An electric double layer capacitor, which is either an alkali-free borosilicate glass composed of wt%, Al 2 O 3 0 to 5 wt% and SnO 2 0 to 5 wt%, or a glass having a titanium opal frit composition.
-7℃-1であることを特徴とする請求項１記載の電気二重
層キャパシタ。2. The thermal expansion coefficient of the glass insulating layer is 85 to 170 × 10.
The electric double layer capacitor according to claim 1, wherein the electric double layer capacitor has a temperature of -7 ° C -1 .
バインダとから成るシートを電極板と導電性板の間に配
置し加熱溶融することにより得ることを特徴とする請求
項１または２記載の電気二重層キャパシタ。3. The electric double layer according to claim 1, wherein the glass insulating layer is obtained by disposing a sheet made of glass frit and an organic resin binder between the electrode plate and the conductive plate and heating and melting the sheet. Capacitors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63081564A JP2563461B2 (en) | 1988-04-01 | 1988-04-01 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63081564A JP2563461B2 (en) | 1988-04-01 | 1988-04-01 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01253910A JPH01253910A (en) | 1989-10-11 |
| JP2563461B2 true JP2563461B2 (en) | 1996-12-11 |
Family
ID=13749788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63081564A Expired - Fee Related JP2563461B2 (en) | 1988-04-01 | 1988-04-01 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2563461B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7830646B2 (en) | 2007-09-25 | 2010-11-09 | Ioxus, Inc. | Multi electrode series connected arrangement supercapacitor |
| US8411413B2 (en) | 2008-08-28 | 2013-04-02 | Ioxus, Inc. | High voltage EDLC cell and method for the manufacture thereof |
| CN104064361B (en) * | 2013-03-20 | 2017-05-24 | 纳米新能源（唐山）有限责任公司 | Self-charging super capacitor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52101432A (en) * | 1976-02-21 | 1977-08-25 | Fuji Electrochemical Co Ltd | Sealed alkaline battery |
| JPS5549857A (en) * | 1978-10-04 | 1980-04-10 | Seiko Instr & Electronics Ltd | Enclosed alkaline battery |
| JPS59194346A (en) * | 1983-04-19 | 1984-11-05 | Citizen Watch Co Ltd | Glass-seal battery |
| JPS60129067U (en) * | 1984-02-07 | 1985-08-29 | 日立マクセル株式会社 | Thin sealed battery |
-
1988
- 1988-04-01 JP JP63081564A patent/JP2563461B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01253910A (en) | 1989-10-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |