JPH07249487A - Microwave absorptive heat emitting body and its manufacture and cooking vessel of microwave oven - Google Patents
Microwave absorptive heat emitting body and its manufacture and cooking vessel of microwave ovenInfo
- Publication number
- JPH07249487A JPH07249487A JP6078251A JP7825194A JPH07249487A JP H07249487 A JPH07249487 A JP H07249487A JP 6078251 A JP6078251 A JP 6078251A JP 7825194 A JP7825194 A JP 7825194A JP H07249487 A JPH07249487 A JP H07249487A
- Authority
- JP
- Japan
- Prior art keywords
- microwave
- weight
- emitting body
- heat emitting
- zinc oxide
- 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
- 238000010411 cooking Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 43
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011787 zinc oxide Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 235000013305 food Nutrition 0.000 description 7
- 238000000465 moulding Methods 0.000 description 5
- 241001149724 Cololabis adocetus Species 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000019688 fish Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000015220 hamburgers Nutrition 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 235000021266 loss of appetite Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 235000012771 pancakes Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- -1 zinc aluminate Chemical class 0.000 description 1
Landscapes
- Constitution Of High-Frequency Heating (AREA)
- Cookers (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、マイクロ波の電磁エネ
ルギーを熱エネルギーに変換するマイクロ波吸収発熱体
及びその製造方法並びに該マイクロ波吸収発熱体で形成
された電子レンジ調理用容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave absorbing heating element for converting microwave electromagnetic energy into heat energy, a method for producing the same, and a microwave oven cooking container formed of the microwave absorbing heating element.
【０００２】[0002]
【従来の技術】電子レンジは周波数２４５０ＭＨｚのマ
イクロ波により被調理物を加熱処理するもので各種の被
調理物の加熱に広く用いられているが、被調理物に焦げ
目を付けることができないという欠点がある。例えばハ
ンバーグ、ホットケーキ、魚、肉などでは焦げ目が付か
ないと食欲がでないという被調理物があり、焦げ目を付
けることができる電子レンジ調理用容器の開発が要望さ
れていた。この要望に応ずるため、電子レンジのオーブ
ン内に磁気損失の大きいフェライト、誘電損失の大きい
チタン酸バリウム、電気抵抗の小さい炭化珪素等よりな
る調理用容器を配置し、この容器の発熱により被調理物
に焦げ目を付けることが提案されている。しかしなが
ら、フェライトやチタン酸バリウムは発熱量が少なく、
また、炭化珪素は高価であり、成形、焼結が難しく、長
期の使用で空気中の酸素により酸化反応を起こしてしま
い発熱効果が低下するため実用に至っていないのが現状
である。酸化物セラミックスである酸化亜鉛もマイクロ
波（２４５０ＭＨｚ）を吸収し発熱することが知られて
いるが、発熱量が十分でなく昇温に時間がかかりすぎる
ため電子レンジ調理の特徴である短時間での調理には適
していない。2. Description of the Related Art A microwave oven heats an object to be cooked by a microwave having a frequency of 2450 MHz and is widely used for heating various kinds of objects to be cooked, but it has a drawback that it cannot be browned. There is. For example, hamburgers, pancakes, fish, meat, and the like have foods that have no appetite unless they are charred, and there has been a demand for the development of a microwave cooking container that can be charred. To meet this demand, a cooking container made of ferrite with large magnetic loss, barium titanate with large dielectric loss, silicon carbide with small electric resistance, etc. is placed in the oven of the microwave oven, and the heat generated by this container causes the food to be cooked. It has been proposed to brown the. However, ferrite and barium titanate generate less heat,
In addition, silicon carbide is expensive, is difficult to mold and sinter, and the oxygen generation reaction is caused by oxygen in the air over a long-term use, and the exothermic effect is deteriorated. It is known that zinc oxide, which is an oxide ceramic, also absorbs microwaves (2450 MHz) and generates heat. However, the amount of heat generated is not sufficient and it takes too long to raise the temperature. Is not suitable for cooking.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、安価でかつ
酸化に対して安定な素材を用いマイクロ波（２４５０Ｍ
Ｈｚ）を吸収して短時間で被調理物に焦げ目のつく温度
に達する発熱特性を有するマイクロ波吸収発熱体及びそ
の製造方法並びに該マイクロ波吸収発熱体で形成された
電子レンジ調理用容器を提供することを目的とする。SUMMARY OF THE INVENTION The present invention uses a microwave (2450M
And a microwave absorption heating element having a heat generation characteristic of reaching a temperature at which the food to be cooked is burnt in a short time, a method for producing the same, and a microwave oven cooking container formed of the microwave absorption heating element. The purpose is to do.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、前記の課
題を解決せんと鋭意研究した結果、下記発明を完成し
た。すなわち、第１の発明は、酸化亜鉛９２〜９７重量
％と酸化アルミニウム８〜３重量％との焼結体よりなる
マイクロ波吸収発熱体である。また、第２の発明は、酸
化亜鉛９２〜９７重量％と酸化アルミニウム８〜３重量
％との混合物を成形し、１０００〜１７００℃の温度で
焼結することを特徴とするマイクロ波吸収発熱体の製造
方法であり、さらに、第３の発明は、酸化亜鉛９２〜９
７重量％と酸化アルミニウム８〜３重量％との焼結体で
形成された電子レンジ調理用容器である。第１の発明に
おいて、後述するように被調理物に焦げ目を付けること
ができる２００℃以上の温度に短時間で達するようにす
るには、酸化亜鉛と酸化アルミニウムとの割合は、９３
〜９６．５重量％：７〜３．５重量％とするのが好まし
く、９５重量％：５重量％とするのが更に好ましい。ま
た、第２の発明においては、酸化亜鉛と酸化アルミニウ
ムとの配合割合は、第１の発明と同様であるが、焼結を
行う際の温度は１０００〜１７００℃、好ましくは１２
００〜１３００℃である。１０００℃未満では焼結体に
マイクロ波を照射しても発熱が起こらず、１７００℃を
超えると酸化亜鉛が昇華してしまう。また、焼結時間は
３０〜１２０分とするのが好ましい。なお、酸化亜鉛、
酸化アルミニウムは、それぞれ０．５〜１０μｍの粒度
であるのが好ましい。両者の混合物から焼結用の成形体
をつくるには、プレス成形、スリップキャスト成形等の
セラミックス製造の分野で一般的な成形法で成形する。
その際、成形バインダー等を添加しても発熱特性上なん
ら問題とならない。さらに、第３の発明において、容器
の形状は、電子レンジ調理用に現在用いられている容器
の形状である各種の皿状のものや、その他被調理物の加
熱に適合する形状のものとするのがよい。以下に、これ
らの発明を実験例に基づきさらに説明する。Means for Solving the Problems The present inventors have completed the following inventions as a result of intensive research aimed at solving the above problems. That is, the first aspect of the present invention is a microwave absorption heating element formed of a sintered body of 92 to 97% by weight of zinc oxide and 8 to 3% by weight of aluminum oxide. A second invention is a microwave absorption heating element, characterized in that a mixture of 92 to 97% by weight of zinc oxide and 8 to 3% by weight of aluminum oxide is molded and sintered at a temperature of 1000 to 1700 ° C. And a third invention is zinc oxide 92-9.
It is a microwave cooking container formed of a sintered body of 7% by weight and 8 to 3% by weight of aluminum oxide. In the first invention, the proportion of zinc oxide and aluminum oxide is 93 in order to reach a temperature of 200 ° C. or higher at which the food to be cooked can be browned as described later in a short time.
˜96.5% by weight: 7 to 3.5% by weight is preferable, and 95% by weight: 5% by weight is more preferable. Further, in the second invention, the mixing ratio of zinc oxide and aluminum oxide is the same as in the first invention, but the temperature at the time of sintering is 1000 to 1700 ° C., preferably 12
It is 00 to 1300 ° C. If the temperature is lower than 1000 ° C, no heat is generated even if the sintered body is irradiated with microwaves, and if the temperature exceeds 1700 ° C, zinc oxide sublimes. The sintering time is preferably 30 to 120 minutes. In addition, zinc oxide,
The aluminum oxide preferably has a particle size of 0.5 to 10 μm, respectively. In order to form a molded body for sintering from a mixture of the two, it is molded by a molding method generally used in the field of ceramics manufacturing such as press molding and slip cast molding.
At that time, even if a molding binder or the like is added, there is no problem in terms of heat generation characteristics. Further, in the third invention, the shape of the container is various dish-like shapes which are the shapes of containers currently used for microwave oven cooking, and other shapes suitable for heating an object to be cooked. Is good. Hereinafter, these inventions will be further described based on experimental examples.
【０００５】実験例 表１に示した配合割合になるように、酸化亜鉛粉末（添
川理化学社製、純度９９．９９％、粒度１μｍ）と、酸
化アルミニウム粉末（レアメタル社製、純度９９．９９
％、粒度１μｍ）とを秤り取り、これにエタノールを加
えボールミルで湿式混合した。混合物を十分乾燥し、径
２０ｍｍ×高さ５ｍｍの錠剤状に１ｔ／ｃｍ２でプレス
成形した後、大気中、電気炉で１２００℃、３０分間保
持し焼結を行った。Experimental Example Zinc oxide powder (manufactured by Soekawa Rikagaku Co., purity 99.99%, particle size 1 μm) and aluminum oxide powder (manufactured by Rare Metal Co., purity 99.99) so that the compounding ratios shown in Table 1 were obtained.
%, Particle size 1 μm) were weighed, ethanol was added thereto, and wet-mixed with a ball mill. The mixture was sufficiently dried and press-molded into a tablet having a diameter of 20 mm and a height of 5 mm at 1 t / cm 2 , and then sintered by holding in an electric furnace at 1200 ° C. for 30 minutes in the air.
【０００６】[0006]
【表１】 [Table 1]
【０００７】得られた焼結体を市販の電子レンジ（５０
０Ｗ、２４５０ＭＨｚ）中で１５〜９０秒間マイクロ波
を照射後ただちに取りだし、焼結体の表面温度をＥ型熱
電対で測定した。測定結果を図１に示す。図２にマイク
ロ波を３０秒間照射したときの焼結体の表面温度を示
す。図３に最高表面温度を呈した配合Ｎｏ．６（酸化亜
鉛９５重量％−酸化アルミニウム５重量％）の焼結体の
粉末Ｘ線回折パターンを示した。なお、図１中の数字
は、表１の配合Ｎｏ．を示す。The obtained sintered body was converted into a commercially available microwave oven (50
After microwave irradiation for 15 to 90 seconds in 0 W, 2450 MHz), it was immediately taken out, and the surface temperature of the sintered body was measured with an E-type thermocouple. The measurement results are shown in FIG. FIG. 2 shows the surface temperature of the sintered body when irradiated with microwaves for 30 seconds. The compound No. which showed the highest surface temperature in FIG. 6 shows a powder X-ray diffraction pattern of a sintered body of No. 6 (95% by weight of zinc oxide-5% by weight of aluminum oxide). The numbers in FIG. 1 are the compound numbers of Table 1. Indicates.
【０００８】図１及び図２から、酸化アルミニウムの配
合量が２重量％以下の場合や８重量％を超える場合は、
酸化亜鉛のみに比べ発熱特性が同等以下であること、ま
た図２から、３０秒間という短時間で被調理物に焦げ目
を付けることができる２００℃以上の温度にするには酸
化アルミニウムが３．５〜７重量％含まれなければなら
ず、さらに、最高温度を得るには、酸化亜鉛９５重量％
−酸化アルミニウム５重量％の焼結体とするのが良いこ
とが分かる。また、図３から本発明焼結体は、酸化亜鉛
とアルミン酸亜鉛とからなるものであることが分かる。From FIGS. 1 and 2, when the content of aluminum oxide is 2% by weight or less or exceeds 8% by weight,
As compared with zinc oxide alone, the exothermic properties are equivalent or less, and from FIG. 2, aluminum oxide is 3.5 or higher in order to reach a temperature of 200 ° C. or higher at which the food can be browned in a short time of 30 seconds. ~ 7% by weight, and 95% by weight zinc oxide to obtain maximum temperature
-It turns out that a sintered body of 5% by weight of aluminum oxide is preferable. Further, it can be seen from FIG. 3 that the sintered body of the present invention comprises zinc oxide and zinc aluminate.
【０００９】[0009]
【作用】本発明のマイクロ波吸収発熱体は、酸化亜鉛の
マイクロ波吸収発熱特性を大幅に改善することができ
る。また炭化珪素に比し素材が安価であり、かつ成形、
焼結しやすく、雰囲気制御することなく大気中で焼結す
ることができる。また、１０００〜１７００℃の高温で
焼結するため自己発熱による化学変化がなく、長期使用
においても発熱効果の低下はない。The microwave absorbing heat generating element of the present invention can greatly improve the microwave absorbing heat generating characteristics of zinc oxide. In addition, the material is cheaper than silicon carbide, and molding,
It is easy to sinter and can be sintered in the air without controlling the atmosphere. Further, since it is sintered at a high temperature of 1000 to 1700 ° C., there is no chemical change due to self-heating, and the exothermic effect does not decrease even after long-term use.
【００１０】[0010]
【実施例】実験例と同じ酸化亜鉛と酸化アルミニウムと
を、それぞれ９５重量％、５重量％となるように秤り取
り、これに蒸留水を加えボールミルで湿式混合しスラリ
ー状態とした。得られたスラリーを加圧鋳込み法によ
り、図４に示す電子レンジ調理用容器と、該容器に用い
る蓋の形状に成形した。容器底部にはリブ状の凹凸を設
け、加熱時に被調理物からでる水分や脂肪分を溜めるこ
とのできるように工夫した。成形体を風通しの良い日陰
で一昼夜乾燥した後、大気中、電気炉で１２００℃で９
０分間保持して焼結を行った。このようにして作った容
器にサンマ一匹を載せ蓋をした。電子レンジのターンテ
ーブルの上には容器が直接触れないようにガラス繊維製
の断熱材を敷き、その上にサンマを入れた容器を載せ
た。電子レンジを５分間運転した後、容器を取り出し蓋
をはずして観察したところ、被調理物のサンマ表面に焦
げ目が付いていた。特に、リブ状凹凸に接した部分は網
で焼いたような焦げ目がついていた。Example The same zinc oxide and aluminum oxide as in the experimental example were weighed so as to be 95% by weight and 5% by weight, respectively, and distilled water was added thereto to wet-mix with a ball mill to obtain a slurry state. The obtained slurry was molded into the shape of the container for microwave oven cooking shown in FIG. 4 and the lid used for the container by a pressure casting method. The bottom of the container was provided with rib-shaped irregularities so that water and fat from the food to be cooked could be collected during heating. After drying the molded body for a whole day and night in a well-ventilated shade, in an air furnace at 1200 ° C for 9 days
It hold | maintained for 0 minute and sintered. One saury was placed on the container thus prepared and the lid was closed. A glass fiber insulating material was laid on the turntable of the microwave oven so that the container did not come into direct contact, and the container containing the saury was placed on it. After operating the microwave oven for 5 minutes, the container was taken out and the lid was removed for observation. As a result, the surface of the saury of the food to be cooked had a brown mark. In particular, the portion in contact with the rib-shaped irregularities had a brown mark like a net.
【００１１】[0011]
【発明の効果】本発明のマイクロ波吸収発熱体は、マイ
クロ波を吸収し自己発熱する際、高い発熱温度を得るこ
とができる。したがって、本発明マイクロ波吸収発熱体
を用いれば被加熱物は直接照射された電磁波による発熱
と併せて容器の発熱によって加熱されることから、加熱
時間を短縮することができ加熱効率が高い。その上耐
酸、耐アルカリにも優れているので、電子レンジの調理
用容器用として特に優れたものである。The microwave absorbing heat generating element of the present invention can obtain a high heat generation temperature when absorbing microwaves and generating heat by itself. Therefore, when the microwave absorption heating element of the present invention is used, the object to be heated is heated by the heat generated by the container in addition to the heat generated by the electromagnetic waves that are directly irradiated, so that the heating time can be shortened and the heating efficiency is high. In addition, it is also excellent in acid resistance and alkali resistance, so that it is particularly excellent as a container for cooking a microwave oven.
【図１】酸化亜鉛と酸化アルミニウムとの焼結体に５０
０Ｗ、２４５０ＭＨｚのマイクロ波を照射したときの、
マイクロ波照射時間と焼結体の表面温度との関係を示す
線図。FIG. 1 shows a sintered body of zinc oxide and aluminum oxide.
When irradiated with 0 W, 2450 MHz microwave,
FIG. 4 is a diagram showing the relationship between the microwave irradiation time and the surface temperature of the sintered body.
【図２】酸化亜鉛と酸化アルミニウムとの焼結体資料に
５００Ｗ、２４５０ＭＨｚのマイクロ波を３０秒間照射
したときの、酸化亜鉛と酸化アルミニウムとの配合割合
と焼結体の表面温度との関係を示す線図。FIG. 2 shows the relationship between the compounding ratio of zinc oxide and aluminum oxide and the surface temperature of the sintered body when a material of the sintered body of zinc oxide and aluminum oxide is irradiated with a microwave of 500 W and 2450 MHz for 30 seconds. The diagram shown.
【図３】配合Ｎｏ．６（酸化亜鉛９５重量％−酸化アル
ミニウム５重量％）の焼結体の粉末Ｘ線回折パターン。[Figure 3] Recipe No. 6 is a powder X-ray diffraction pattern of a sintered body of 6 (95% by weight of zinc oxide-5% by weight of aluminum oxide).
【図４】実施例で用いた電子レンジ調理用容器と、該容
器に用いた蓋の形状を示す図。FIG. 4 is a view showing a microwave cooking container used in Examples and a shape of a lid used for the container.
Claims (3)
ニウム８〜３重量％との焼結体よりなるマイクロ波吸収
発熱体。1. A microwave absorbing heating element comprising a sintered body of 92 to 97% by weight of zinc oxide and 8 to 3% by weight of aluminum oxide.
ニウム８〜３重量％との混合物を成形し、１０００〜１
７００℃の温度で焼結することを特徴とするマイクロ波
吸収発熱体の製造方法。2. A mixture of 92 to 97% by weight of zinc oxide and 8 to 3% by weight of aluminum oxide is molded to obtain 1000 to 1
A method for producing a microwave absorption heating element, which comprises sintering at a temperature of 700 ° C.
ニウム８〜３重量％との焼結体で形成された電子レンジ
調理用容器。3. A container for microwave oven cooking, which is formed of a sintered body of 92 to 97% by weight of zinc oxide and 8 to 3% by weight of aluminum oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6078251A JPH07249487A (en) | 1994-03-09 | 1994-03-09 | Microwave absorptive heat emitting body and its manufacture and cooking vessel of microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6078251A JPH07249487A (en) | 1994-03-09 | 1994-03-09 | Microwave absorptive heat emitting body and its manufacture and cooking vessel of microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07249487A true JPH07249487A (en) | 1995-09-26 |
Family
ID=13656786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6078251A Pending JPH07249487A (en) | 1994-03-09 | 1994-03-09 | Microwave absorptive heat emitting body and its manufacture and cooking vessel of microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07249487A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001054460A1 (en) * | 2000-01-21 | 2001-07-26 | Idemitsu Petrochemical Co., Ltd. | High frequency induction heating-purpose inorganic material, composite material, mold, and method of producing high frequency fusion processed articles |
| JP2013040075A (en) * | 2011-08-17 | 2013-02-28 | Saga Prefecture | Pottery and porcelain, and manufacturing method therefor |
| KR20160118106A (en) | 2015-04-01 | 2016-10-11 | 전수걸 | Manufacturing method of pottery |
-
1994
- 1994-03-09 JP JP6078251A patent/JPH07249487A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001054460A1 (en) * | 2000-01-21 | 2001-07-26 | Idemitsu Petrochemical Co., Ltd. | High frequency induction heating-purpose inorganic material, composite material, mold, and method of producing high frequency fusion processed articles |
| JP2013040075A (en) * | 2011-08-17 | 2013-02-28 | Saga Prefecture | Pottery and porcelain, and manufacturing method therefor |
| KR20160118106A (en) | 2015-04-01 | 2016-10-11 | 전수걸 | Manufacturing method of pottery |
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