JP2021125500A - セラミックヒータ - Google Patents
セラミックヒータ Download PDFInfo
- Publication number
- JP2021125500A JP2021125500A JP2020016116A JP2020016116A JP2021125500A JP 2021125500 A JP2021125500 A JP 2021125500A JP 2020016116 A JP2020016116 A JP 2020016116A JP 2020016116 A JP2020016116 A JP 2020016116A JP 2021125500 A JP2021125500 A JP 2021125500A
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- JP
- Japan
- Prior art keywords
- ceramic plate
- thermocouple
- peripheral side
- ceramic
- outer peripheral
- 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.)
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- 239000000919 ceramic Substances 0.000 title claims abstract description 110
- 230000002093 peripheral effect Effects 0.000 claims abstract description 78
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000009529 body temperature measurement Methods 0.000 abstract description 11
- 230000000149 penetrating effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67248—Temperature monitoring
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
- H05B3/143—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds applied to semiconductors, e.g. wafers heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67103—Apparatus for thermal treatment mainly by conduction
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68757—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a coating or a hardness or a material
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68785—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by the mechanical construction of the susceptor, stage or support
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68792—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by the construction of the shaft
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0233—Industrial applications for semiconductors manufacturing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
- H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
- H05B3/283—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32715—Workpiece holder
- H01J37/32724—Temperature
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Abstract
【解決手段】セラミックヒータ10は、表面にウエハ載置面20aを有するセラミックプレート20と、セラミックプレート20に埋設された抵抗発熱体22,24と、セラミックプレート20をセラミックプレート20の裏面20bから支持する筒状シャフト40と、セラミックプレート20の裏面20bのうち筒状シャフト40に囲まれたシャフト内領域20dの起点26sからセラミックプレート20の外周部の終端位置26eに至る熱電対通路26と、を備える。熱電対通路26は、起点26sと終端位置26eまでの間の中間位置26mに設けられた段差部26bと、起点26sと終端位置26eとの間にカーブ部26cとを有する。
【選択図】図3
Description
表面にウエハ載置面を有するセラミックプレートと、
前記セラミックプレートに埋設された抵抗発熱体と、
前記セラミックプレートを前記セラミックプレートの裏面から支持する筒状シャフトと、
前記セラミックプレートの前記裏面のうち前記筒状シャフトに囲まれたシャフト内領域の起点から前記セラミックプレートの外周部の終端位置に至る熱電対通路と、
を備え、
前記熱電対通路は、前記起点と前記終端位置との間にカーブ部を有する、
ものである。
Claims (7)
- 表面にウエハ載置面を有するセラミックプレートと、
前記セラミックプレートに埋設された抵抗発熱体と、
前記セラミックプレートを前記セラミックプレートの裏面から支持する筒状シャフトと、
前記セラミックプレートの前記裏面のうち前記筒状シャフトに囲まれたシャフト内領域の起点から前記セラミックプレートの外周部の終端位置に至る熱電対通路と、
を備え、
前記熱電対通路は、前記起点と前記終端位置との間にカーブ部を有する、
セラミックヒータ。 - 前記カーブ部は、前記セラミックプレートに設けられた所定部位を回避するように設けられている、
請求項1に記載のセラミックヒータ。 - 前記カーブ部は、前記セラミックプレートの面方向にカーブしている、
請求項1又は2に記載のセラミックヒータ。 - 前記カーブ部は、前記セラミックプレートの厚さ方向にカーブしている、
請求項1〜3のいずれか1項に記載のセラミックヒータ。 - 前記終端位置は、前記セラミックプレートのうち前記抵抗発熱体が埋設されている面と前記ウエハ載置面との間に設けられている、
請求項4に記載のセラミックヒータ。 - 前記カーブ部の曲率半径は、20mm以上である、
請求項1〜5のいずれか1項に記載のセラミックヒータ。 - 請求項1〜6のいずれか1項に記載のセラミックヒータであって、
前記熱電対通路に挿通され、先端の測温部が前記終端位置に至っている熱電対
を備えたセラミックヒータ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020016116A JP7202322B2 (ja) | 2020-02-03 | 2020-02-03 | セラミックヒータ |
US17/111,714 US20210242053A1 (en) | 2020-02-03 | 2020-12-04 | Ceramic heater |
TW109146175A TWI773053B (zh) | 2020-02-03 | 2020-12-25 | 陶瓷加熱器 |
KR1020210011322A KR102597235B1 (ko) | 2020-02-03 | 2021-01-27 | 세라믹 히터 |
CN202110146198.4A CN113286385B (zh) | 2020-02-03 | 2021-02-02 | 陶瓷加热器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020016116A JP7202322B2 (ja) | 2020-02-03 | 2020-02-03 | セラミックヒータ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2021125500A true JP2021125500A (ja) | 2021-08-30 |
JP7202322B2 JP7202322B2 (ja) | 2023-01-11 |
Family
ID=77062154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020016116A Active JP7202322B2 (ja) | 2020-02-03 | 2020-02-03 | セラミックヒータ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210242053A1 (ja) |
JP (1) | JP7202322B2 (ja) |
KR (1) | KR102597235B1 (ja) |
CN (1) | CN113286385B (ja) |
TW (1) | TWI773053B (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001135715A (ja) * | 1999-08-24 | 2001-05-18 | Ibiden Co Ltd | 測温素子および半導体製造装置用セラミック基材 |
WO2013162000A1 (ja) * | 2012-04-27 | 2013-10-31 | 日本発條株式会社 | 基板支持装置及び基板支持装置に熱電対を配設する方法 |
US20190252162A1 (en) * | 2018-02-09 | 2019-08-15 | Applied Materials, Inc. | Semiconductor processing apparatus having improved temperature control |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3516392B2 (ja) * | 2000-06-16 | 2004-04-05 | イビデン株式会社 | 半導体製造・検査装置用ホットプレート |
US20060127067A1 (en) * | 2004-12-13 | 2006-06-15 | General Electric Company | Fast heating and cooling wafer handling assembly and method of manufacturing thereof |
US9275887B2 (en) * | 2006-07-20 | 2016-03-01 | Applied Materials, Inc. | Substrate processing with rapid temperature gradient control |
JP2009074978A (ja) * | 2007-09-21 | 2009-04-09 | Fenwall Controls Of Japan Ltd | 温度センサ及び温度センサの製造方法 |
WO2010002884A2 (en) * | 2008-07-01 | 2010-01-07 | Brooks Automation, Inc. | Method and apparatus for providing temperature control to a cryopump |
JP5791412B2 (ja) * | 2010-07-26 | 2015-10-07 | 日本碍子株式会社 | セラミックヒーター |
KR101357928B1 (ko) * | 2010-09-24 | 2014-02-03 | 엔지케이 인슐레이터 엘티디 | 반도체 제조 장치 부재 |
JP2012080103A (ja) * | 2010-10-01 | 2012-04-19 | Ngk Insulators Ltd | サセプター及びその製法 |
WO2012056807A1 (ja) * | 2010-10-25 | 2012-05-03 | 日本碍子株式会社 | セラミックス材料、積層体、半導体製造装置用部材及びスパッタリングターゲット部材 |
JP2012160368A (ja) * | 2011-02-01 | 2012-08-23 | Nihon Ceratec Co Ltd | セラミックスヒータ及びその製造方法 |
US9984866B2 (en) * | 2012-06-12 | 2018-05-29 | Component Re-Engineering Company, Inc. | Multiple zone heater |
TWM644795U (zh) * | 2013-03-15 | 2023-08-11 | 美商瓦特隆電子製造公司 | 使用在半導體處理室內的裝置 |
US10840117B2 (en) * | 2016-09-12 | 2020-11-17 | Ngk Spark Plug Co., Ltd. | Holding apparatus |
JP6704837B2 (ja) * | 2016-10-31 | 2020-06-03 | 日本特殊陶業株式会社 | 保持装置 |
KR102078157B1 (ko) * | 2018-04-16 | 2020-02-17 | 세메스 주식회사 | 기판 가열 유닛 및 이를 갖는 기판 처리 장치 |
-
2020
- 2020-02-03 JP JP2020016116A patent/JP7202322B2/ja active Active
- 2020-12-04 US US17/111,714 patent/US20210242053A1/en active Pending
- 2020-12-25 TW TW109146175A patent/TWI773053B/zh active
-
2021
- 2021-01-27 KR KR1020210011322A patent/KR102597235B1/ko active IP Right Grant
- 2021-02-02 CN CN202110146198.4A patent/CN113286385B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001135715A (ja) * | 1999-08-24 | 2001-05-18 | Ibiden Co Ltd | 測温素子および半導体製造装置用セラミック基材 |
WO2013162000A1 (ja) * | 2012-04-27 | 2013-10-31 | 日本発條株式会社 | 基板支持装置及び基板支持装置に熱電対を配設する方法 |
US20190252162A1 (en) * | 2018-02-09 | 2019-08-15 | Applied Materials, Inc. | Semiconductor processing apparatus having improved temperature control |
Also Published As
Publication number | Publication date |
---|---|
KR102597235B1 (ko) | 2023-11-03 |
TWI773053B (zh) | 2022-08-01 |
TW202131757A (zh) | 2021-08-16 |
CN113286385B (zh) | 2024-03-29 |
KR20210098859A (ko) | 2021-08-11 |
CN113286385A (zh) | 2021-08-20 |
JP7202322B2 (ja) | 2023-01-11 |
US20210242053A1 (en) | 2021-08-05 |
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