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Myong Euy LEE
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Yongin-si, KR
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Patents Grants
last 30 patents
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Patent Grant
Silicon nitride film etching composition and etching method using t...
Patent number
11,987,740
Issue date
May 21, 2024
ENF TECHNOLOGY CO., LTD.
Dong Hyun Kim
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Silicon nitride film etching composition and etching method using t...
Patent number
11,939,505
Issue date
Mar 26, 2024
ENF TECHNOLOGY CO., LTD.
Dong Hyun Kim
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
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Patent Application
SILICON NITRIDE FILM ETCHING COMPOSITION AND ETCHING METHOD USING T...
Publication number
20220089952
Publication date
Mar 24, 2022
ENF TECHNOLOGY CO., LTD.
Dong Hyun KIM
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
SILICON NITRIDE FILM ETCHING COMPOSITION AND ETCHING METHOD USING T...
Publication number
20220089951
Publication date
Mar 24, 2022
ENF TECHNOLOGY CO., LTD.
Dong Hyun KIM
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SILICON NITRIDE FILM ETCHING COMPOSITION AND ETCHING METHOD USING T...
Publication number
20220089953
Publication date
Mar 24, 2022
ENF TECHNOLOGY CO., LTD.
Dong Hyun KIM
H01 - BASIC ELECTRIC ELEMENTS