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Patent Grant
Invisible ink and method of making the same
Patent number
12,325,803
Issue date
Jun 10, 2025
National Cheng Kung University
Chen-Kuei Chung
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Patents Applications
last 30 patents
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Patent Application
METAL-NANOPARTICLE-FREE SURFACE-ENHANCED RAMAN SCATTERING SUBSTRATE...
Publication number
20250066943
Publication date
Feb 27, 2025
National Cheng Kung University
Chen-Kuei CHUNG
B82 - NANO-TECHNOLOGY
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Patent Application
INVISIBLE INK AND METHOD OF MAKING THE SAME
Publication number
20230303879
Publication date
Sep 28, 2023
National Cheng Kung University
CHEN-KUEI CHUNG
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR