CN204563921U - 一种具有非等径布气孔的氧化空气管 - Google Patents
一种具有非等径布气孔的氧化空气管 Download PDFInfo
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- CN204563921U CN204563921U CN201520253567.XU CN201520253567U CN204563921U CN 204563921 U CN204563921 U CN 204563921U CN 201520253567 U CN201520253567 U CN 201520253567U CN 204563921 U CN204563921 U CN 204563921U
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CN114196923A (zh) * | 2022-02-18 | 2022-03-18 | 北京博宇半导体工艺器皿技术有限公司 | 氮化硼坩埚模具、制备方法及脱模方法 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114196923A (zh) * | 2022-02-18 | 2022-03-18 | 北京博宇半导体工艺器皿技术有限公司 | 氮化硼坩埚模具、制备方法及脱模方法 |
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Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP03 | Change of name, title or address |
Address after: 411100 No. 12 Ping'an Road, Jintangwan Xiangfeng Township, Yuhu District, Xiangtan City, Hunan Province Patentee after: HUNAN PING'AN ENVIRONMENT PROTECTION CO., LTD. Address before: 411110 No. 12 Ping'an Road, Jintangwan Xiangfeng Township, Yuhu District, Xiangtan City, Hunan Province Patentee before: HUNAN PING'AN ENVIRONMENTAL PROTECTION CO., LTD. |
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CP03 | Change of name, title or address | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Oxidation air pipe that has non-constant diameter gas distribution hole Effective date of registration: 20190428 Granted publication date: 20150819 Pledgee: Bank of Changsha Limited by Share Ltd science and Technology Branch Pledgor: HUNAN PING'AN ENVIRONMENT PROTECTION CO., LTD. Registration number: 2019430000035 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200511 Granted publication date: 20150819 Pledgee: Bank of Changsha Limited by Share Ltd science and Technology Branch Pledgor: HUNAN PINGAN ENVIRONMENTAL PROTECTION Co.,Ltd. Registration number: 2019430000035 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Oxidation air pipe that has non-constant diameter gas distribution hole Effective date of registration: 20200512 Granted publication date: 20150819 Pledgee: Bank of Changsha Limited by Share Ltd science and Technology Branch Pledgor: HUNAN PINGAN ENVIRONMENTAL PROTECTION Co.,Ltd. Registration number: Y2020980002132 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right |