JPS63245970A - Magnetic shielding case - Google Patents
Magnetic shielding caseInfo
- Publication number
- JPS63245970A JPS63245970A JP62080414A JP8041487A JPS63245970A JP S63245970 A JPS63245970 A JP S63245970A JP 62080414 A JP62080414 A JP 62080414A JP 8041487 A JP8041487 A JP 8041487A JP S63245970 A JPS63245970 A JP S63245970A
- Authority
- JP
- Japan
- Prior art keywords
- case
- superconducting material
- elements
- group
- magnetic
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 10
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 6
- 239000011737 fluorine Substances 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- 239000011593 sulfur Substances 0.000 claims abstract description 5
- 230000000737 periodic effect Effects 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 150000004767 nitrides Chemical class 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052747 lanthanoid Inorganic materials 0.000 description 2
- 150000002602 lanthanoids Chemical class 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910052768 actinide Inorganic materials 0.000 description 1
- 150000001255 actinides Chemical class 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、収納物を外部磁界からシールドすることが
できる磁気シールドケースに関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a magnetic shield case that can shield stored items from external magnetic fields.
〈従来の技術〉
最近、磁気を使って情報を記録した媒体が多く使用され
るようになり、外部磁界による情報破壊の問題がクロー
ズアップされつつある。また、電子レンジ、高周波加熱
機器等、電磁波を使用する機器が多く使用されるように
なり、電子機器、通信機器等が誤動作を受けることがあ
り、電磁環境対策（ＥＭ Ｉ ”）の必要性が叫ばれて
いる。<Prior Art> Recently, media in which information is recorded using magnetism have come into widespread use, and the problem of information destruction due to external magnetic fields is drawing attention. In addition, many devices that use electromagnetic waves, such as microwave ovens and high-frequency heating devices, are being used, and electronic devices and communication devices may malfunction, making it necessary to take electromagnetic environment countermeasures (EMI). being shouted at.
このような外部磁界によって損傷を受ける物として、磁
気ディスク、磁気テープ、磁気カード等の磁気記憶媒体
や、磁気記憶媒体を組み込んだ各種の情報機器等が挙げ
られる。また、外部磁界のうち特に電磁界によって妨害
を受ける物として、各種の電子機器、通信機器等が挙げ
られる。Objects that can be damaged by such external magnetic fields include magnetic storage media such as magnetic disks, magnetic tapes, and magnetic cards, and various information devices incorporating magnetic storage media. In addition, various electronic devices, communication devices, and the like are examples of objects that are particularly disturbed by electromagnetic fields among external magnetic fields.
従来、これらの物を外部磁界から保護するために、透磁
率の大きな材料、例えばＮｉ製の網からなるケースに収
納したり、小さな物であれば、パーマロイ等を電着また
は蒸着して磁気シールド膜を形成したケースに収納して
いた。また、電磁界から保護するためには、上記透磁率
の大きな材料からなるケースのほか、導電率の高いＣｕ
、ＡＪ等の網からなるケースに収納することも行われて
いた。Conventionally, in order to protect these objects from external magnetic fields, they were housed in a case made of a material with high magnetic permeability, such as a Ni mesh, or, if the object was small, a magnetic shield was created by electrodepositing or vapor depositing permalloy, etc. It was housed in a case with a membrane. In addition, in order to protect from electromagnetic fields, in addition to the case made of the above-mentioned material with high magnetic permeability, it is necessary to use a case made of a material with high conductivity.
, AJ, etc. were also housed in a case made of netting.
〈発明が解決しようとする問題点〉
上記の場合、外部磁界が強かったり、収納物が外部磁界
に対してして敏感なものであればあるほどシールドを徹
底して施す必要があるが、シールドを万全にしようとす
るほど、網の目を密にしたり、何重にも設けたり、また
シールドを厚くしたりしなければならず、構造が複雑化
したり、重量が増加したりするという問題があった。<Problem to be solved by the invention> In the above case, the stronger the external magnetic field is, or the more sensitive the stored items are to the external magnetic field, the more thorough the shielding is. The more you try to make the shield perfect, the more you have to make the mesh denser, install multiple layers, and thicken the shield, which leads to problems such as the structure becoming more complicated and the weight increasing. there were.
〈発明の目的〉
この発明は上記の問題点に鑑みてなされたものであり、
収納物を簡単な構造でかつ完全に磁気シールドできる磁
気シールドケースを提供することを目的としている。<Object of the invention> This invention was made in view of the above problems,
To provide a magnetic shielding case which has a simple structure and can completely magnetically shield stored items.
く問題点を解決するための手段〉
上記の目的を達成するためのこの発明の磁気シールドケ
ースは、ケース基材に対して超電導材を積層しているも
のである。Means for Solving the Problems> A magnetic shielding case of the present invention for achieving the above object has a case base material laminated with a superconducting material.
上記超電導材は、一般式ＡａＢｂＣｃ（式中、Ａは周期
律表１ ａ ｓ ＩＩ ａおよびＨａ族元素から選択さ
れた少なくとも１種の元素であり、Ｂは周期律表１ｂ、
Ｉ［ｂおよびＩＩＩｂ族元素から選択された少なくとも
１種の元素であり、Ｃは酸素、フッ素、硫黄、炭素およ
び窒素から“選択された少なくとも１種の元素である）
で表されるセラミックス超電導材であることが好ましい
。The superconducting material has a general formula AaBbCc (where A is at least one element selected from Group 1 of the Periodic Table 1 a s II a and Ha group elements, and B is a group 1 b of the Periodic Table,
I[is at least one element selected from group b and IIIb elements, and C is at least one element selected from oxygen, fluorine, sulfur, carbon and nitrogen.
It is preferable to use a ceramic superconducting material represented by:
上記超電導材は、超電導材用原料を焼結すること等によ
って製造され、その原料としては、超電導材を構成する
元素を含有するものであれば単体、化合物の何れの形態
でも使用し得る。上記元素としては、周期律表Ｉ族、■
族および■族元素並びに酸素、窒素、フッ素、炭素およ
び硫黄等が例示される。The superconducting material described above is manufactured by sintering a raw material for superconducting material, and the raw material can be used in the form of either a single substance or a compound as long as it contains the elements constituting the superconducting material. The above elements include Group I of the periodic table, ■
Examples thereof include Group and Group II elements, oxygen, nitrogen, fluorine, carbon, and sulfur.
より詳細には、上記周期律表Ｉ族元素のうち、Ｉａ族元
素としては、Ｌ ｉ、Ｎａ、に、Ｒｂ。More specifically, among the Group I elements of the periodic table, the Group Ia elements include Li, Na, and Rb.
Ｃｓ等が挙げられ、Ｉｂ族元素としては、Ｃｕ。Examples include Cs, and group Ib elements include Cu.
ＡｇおよびＡｕが挙げられる。また、周期律表■族元素
のうち、Ｉｌａ族元素としては、Ｂ ｅ ｓ Ｍ ｇ
ｓＣａ、Ｓｒ、ＢａおよびＲａが挙げられ、ｎｂ族元素
としては、Ｚｎ、（ｄ等が挙げられる。周期律表■族元
素のうち、ＩＩＩ ａ族元素としては、Ｓｃ。Examples include Ag and Au. In addition, among group I elements of the periodic table, as group Ila elements, B e s M g
Examples of sCa, Sr, Ba and Ra are mentioned, and examples of the nb group elements include Zn, (d, etc.).Among the elements of the group I of the periodic table, examples of the group IIIa elements include Sc.
Ｙやランタノイド系元素であるＬａ％Ｃｅ、Ｇｄ。Y and lanthanoid elements such as La%Ce and Gd.
Ｌｕ等、アクチノイド系元素であるＡｃ、Ｔｈ。Ac, Th, which are actinide elements such as Lu.
Ｐａ５Ｃｆ等が挙げられる。また、ＩＩＩｂ族元素とし
ては、ＡＪ％Ｇ ａＮ Ｉ ｎｓ Ｔ１等が挙げられる
。Examples include Pa5Cf. Further, examples of the IIIb group element include AJ%GaN Ins T1 and the like.
上記元素のうち、Ｉｂ族元素から選ばれた元素、Ｉｌａ
族元素、ｍａ族元素およびランタノイド系元素から選ば
れた元素、並びに酸素およびフッ素から選ばれた元素か
らなるセラミックス超電導材が好ましい。なお、Ｉｂ族
元素としてはＣｕおよびＡｇが好ましい。Among the above elements, an element selected from group Ib elements, Ila
A ceramic superconducting material comprising an element selected from Group elements, Ma group elements, and lanthanoid elements, and an element selected from oxygen and fluorine is preferred. Note that Cu and Ag are preferred as the Ib group elements.
く作用〉
以上の構成の磁気シールドケースを、臨界温度以下の温
度に保つと、超電導材の反磁性によって、磁気シールド
ケース内部の磁界は０となり、収納物を外部磁界から完
全に保護することができる。When the magnetic shield case with the above configuration is kept at a temperature below the critical temperature, the magnetic field inside the magnetic shield case becomes 0 due to the diamagnetic properties of the superconducting material, making it impossible to completely protect the stored items from external magnetic fields. can.
上記超電導体が、上記組成のセラミックス超電導体であ
れば、臨界温度が比較的高いもの（例えば液体窒素温度
以上）が知られているので、このような場合には、臨界
温度以下に保つことが容易にできる。If the above-mentioned superconductor is a ceramic superconductor with the above-mentioned composition, it is known that the critical temperature is relatively high (for example, higher than the liquid nitrogen temperature), so in such a case, it is necessary to maintain the critical temperature below the critical temperature. It's easy to do.
〈実施例〉
以下、実施例について詳述すると、この発明の磁気シー
ルドケースは、例えば、超電導材を５ＵＳ１プラスチツ
クケース等のケース基材に被覆し、または基材間に挾み
込んでなるものであればよく、要は収納物を磁気シール
ド可能に包囲できるものであればよい。<Example> Hereinafter, examples will be described in detail. The magnetic shield case of the present invention is made by, for example, coating a case base material such as a 5US1 plastic case with a superconducting material, or sandwiching it between base materials. In short, it is sufficient as long as it can surround the stored items in a magnetically shielded manner.
上記の磁気シールドケースは、例えば以下のようにして
製作することができる。周期律表１族、■族、■族およ
び酸素、窒素、フッ素、炭素、硫黄等所定の超電導原料
を含有する酸化物、炭酸化物、硫化物、フッ化物、窒化
物または炭化物の混合粉を、所望する超電導材の組成に
応じて適宜の割合で混合し、必要ならば一定圧力でプレ
ス、焼結あるいは融点直下で結晶化して（焼結温度や結
晶化温度、熱処理時間等は、セラミックス超電導体を構
成する元素の種類、組成などにより適宜選択できる。）
、成形体またはこの成形体を粉砕した粉体を得、これを
磁気シールドケースの内面または外面に被覆する。The above magnetic shield case can be manufactured, for example, as follows. A mixed powder of oxides, carbonates, sulfides, fluorides, nitrides, or carbides containing Groups 1, 2, and 2 of the periodic table and specified superconducting raw materials such as oxygen, nitrogen, fluorine, carbon, and sulfur, Mix in an appropriate ratio depending on the composition of the desired superconducting material, and if necessary, press at a constant pressure, sinter, or crystallize just below the melting point (sintering temperature, crystallization temperature, heat treatment time, etc. (Can be selected as appropriate depending on the type and composition of the elements constituting it.)
A molded body or a powder obtained by pulverizing the molded body is obtained, and this is coated on the inner or outer surface of a magnetic shielding case.
上記被覆は、スパッタリング法、真空蒸着法、プラズマ
８射法等の物理蒸着法、またはプラズマＣＶＤ法等の化
学蒸着法等を採用して行うこともでき、また、吹付け、
塗布にて行うこともできる。The above-mentioned coating can also be performed by employing sputtering method, vacuum evaporation method, physical vapor deposition method such as plasma 8-shot method, or chemical vapor deposition method such as plasma CVD method.
It can also be done by coating.
さらに、磁気シールドケースと一体に焼結してもよい。Furthermore, it may be sintered integrally with the magnetic shield case.
このようにしてできた磁気シールドケースを臨界温度以
下に保てば、磁気シールドケース内部は外部磁界から遮
蔽され、収納物を磁界から完全に保護することができる
ので、磁気ディスク、磁気テープ、磁気カード等の磁気
記憶媒体や、磁気記憶媒体を組み込んだ各種の情報機器
、ならびに電子機器、通信機器等の保護に用いることが
できる。If the magnetic shield case made in this way is kept below the critical temperature, the inside of the magnetic shield case will be shielded from external magnetic fields, and the stored items can be completely protected from the magnetic field. It can be used to protect magnetic storage media such as cards, various information devices incorporating magnetic storage media, electronic equipment, communication equipment, etc.
なお、超電導膜については前記以外の種々の組成の物を
使用することができ、その他この発明の要旨を変更しな
い範囲内において、種々の設計変更を施すことが可能で
ある。The superconducting film may have various compositions other than those described above, and various other design changes may be made without departing from the gist of the present invention.
く試験例１〉
ＳＵＳ板で容器を製作し、一定成分比率からなる微粉末
を焼結して得た超電導材（組成Ｙ。、８Ｂａ Ｃｕ
０３）をプラズマ溶射して、磁気シ０．２
−ルドケース内面にシールド膜を形成した。磁気シール
ドケース内部に通信機器を設置して動作させ、磁気シー
ルドケース外部に強い電磁界を発生させたが、通信機器
は何ら妨害を受けなかった。Test Example 1 A container was made of SUS plate, and a superconducting material (composition Y., 8Ba Cu
0.2) was plasma sprayed to form a shield film on the inner surface of the magnetic shield case. Communication equipment was installed and operated inside the magnetically shielded case, and a strong electromagnetic field was generated outside the magnetically shielded case, but the communication equipment was not disturbed in any way.
く試験例２〉
磁気カードを収納するプラスチック箱の外面に一定成分
比率からなる微粉末を焼結して得た超電導材（組成 Ｙ
Ｓｒ ＣａＯ２）をスバッ０．６ ０．４
りしてシールド膜を形成し、さらにその外面を他のやや
大きめのプラスチック箱で覆って磁気シールドケースと
した。その中に磁気カードを入れ、１０００ガウスの外
部磁界を印加したが、磁気カードに書き込まれた情報は
損傷を受けず、正常に使用することができた。Test Example 2> A superconducting material (composition: Y
A shield film was formed by scrubbing SrCaO2), and the outer surface of the film was further covered with another slightly larger plastic box to form a magnetic shield case. A magnetic card was placed in it and an external magnetic field of 1000 Gauss was applied, but the information written on the magnetic card was not damaged and could be used normally.
〈発明の効果〉
以上のように、この発明の磁気シールドケースによれば
、ケース基板に対して積層された超電導材料によって、
外部磁界の影響を受けやすい収納物の損傷、特性劣化、
誤動作等を簡単に防止することができ、収納物を完全に
保護することができるという特有の効果を奏する。<Effects of the Invention> As described above, according to the magnetically shielded case of the present invention, the superconducting material laminated on the case substrate provides
Damage to stored items that are susceptible to external magnetic fields, deterioration of characteristics,
It has the unique effect of easily preventing malfunctions and completely protecting stored items.
Claims (1)
であって、ケース基材に対して超電導材を積層している
ことを特徴とする磁気シールドケース。 ２、超電導材が、下記一般式（Ｉ）で表される組成のセ
ラミックス超電導材である上記特許請求の範囲第１項記
載の磁気シールドケース。 ＡａＢｂＣｃ（Ｉ） （式中、Ａは周期律表Ｉａ、IIａおよびIIIａ族元素か
ら選択された少なくとも１種の元素であり、Ｂは周期律
表Ｉｂ、IIｂおよびIIIｂ族元素から選択された少なく
とも１種の元素であり、Ｃは酸素、フッ素、硫黄、炭素
および窒素から選択された少なくとも１種の元素である
）[Scope of Claims] 1. A magnetic shielding case for protecting stored items from external magnetic fields, characterized in that a superconducting material is laminated on the case base material. 2. The magnetic shield case according to claim 1, wherein the superconducting material is a ceramic superconducting material having a composition represented by the following general formula (I). AaBbCc(I) (wherein A is at least one element selected from elements of groups Ia, IIa and IIIa of the periodic table, and B is at least one element selected from elements of groups Ib, IIb and IIIb of the periodic table) (C is at least one element selected from oxygen, fluorine, sulfur, carbon and nitrogen)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080414A JPS63245970A (en) | 1987-03-31 | 1987-03-31 | Magnetic shielding case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080414A JPS63245970A (en) | 1987-03-31 | 1987-03-31 | Magnetic shielding case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63245970A true JPS63245970A (en) | 1988-10-13 |
Family
ID=13717634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62080414A Pending JPS63245970A (en) | 1987-03-31 | 1987-03-31 | Magnetic shielding case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63245970A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63250875A (en) * | 1987-04-08 | 1988-10-18 | Hitachi Ltd | Electronic equipment |
| JPH02192615A (en) * | 1989-01-20 | 1990-07-30 | Ngk Insulators Ltd | Metal coated superconductive ceramics compact and manufacture thereof |
| US5202305A (en) * | 1989-04-17 | 1993-04-13 | Ngk Insulators, Ltd. | Superconducting structure for magnetic shielding |
| JP2007333285A (en) * | 2006-06-14 | 2007-12-27 | Sumitomo Heavy Ind Ltd | Cooling storage type cryogenic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033082U (en) * | 1983-08-11 | 1985-03-06 | 株式会社吉野工業所 | Creamy storage container |
-
1987
- 1987-03-31 JP JP62080414A patent/JPS63245970A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033082U (en) * | 1983-08-11 | 1985-03-06 | 株式会社吉野工業所 | Creamy storage container |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63250875A (en) * | 1987-04-08 | 1988-10-18 | Hitachi Ltd | Electronic equipment |
| JPH02192615A (en) * | 1989-01-20 | 1990-07-30 | Ngk Insulators Ltd | Metal coated superconductive ceramics compact and manufacture thereof |
| US5202305A (en) * | 1989-04-17 | 1993-04-13 | Ngk Insulators, Ltd. | Superconducting structure for magnetic shielding |
| JP2007333285A (en) * | 2006-06-14 | 2007-12-27 | Sumitomo Heavy Ind Ltd | Cooling storage type cryogenic device |
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