Inventor
HUANG JEN-CHI
19 patents
⚠️ This page may combine multiple inventors who share the name “HUANG JEN-CHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POLYCHROME CORP
16 patentsUS4072589AFeb 7, 1978
Process for electrolytic graining of aluminum sheet
POLYCHROME CORP38 citations91
US4052275AOct 4, 1977
Process for electrolytic graining of aluminum sheet
POLYCHROME CORP28 citations80
US4524125AJun 18, 1985
Chemical etching of lithographic aluminum substrate
POLYCHROME CORP11 citations73
US4324841AApr 13, 1982
Lithographic substrates
POLYCHROME CORP16 citations73
US4242417ADec 30, 1980
Lithographic substrates
POLYCHROME CORP16 citations73
US4721552AJan 26, 1988
Two-step method for electrolytically graining lithographic metal plates
POLYCHROME CORP15 citations72
US4477317AOct 16, 1984
Aluminum substrates useful for lithographic printing plates
POLYCHROME CORP17 citations72
US4467028AAug 21, 1984
Acid interlayered planographic printing plate
POLYCHROME CORP12 citations72
US4483913ANov 20, 1984
Planographic printing plate
POLYCHROME CORP16 citations71
US4548683AOct 22, 1985
Method of electrolytically graining a lithographic plate
POLYCHROME CORP13 citations67
US4568630AFeb 4, 1986
Method for preparing and using an anodized aluminum photo-lithographic printing plate
POLYCHROME CORP6 citations62
US4406757ASep 27, 1983
Anodization method
POLYCHROME CORP5 citations62
US4201836AMay 6, 1980
Aluminum substrates grained with a saturated solution of aluminum salts of mineral acids
POLYCHROME CORP4 citations62
US4735696AApr 5, 1988
Method of electrolytically graining aluminum metal sheets suitable for lithographic plate supports
POLYCHROME CORP5 citations61
US4552827ANov 12, 1985
Planographic printing plate having cationic compound in interlayer
POLYCHROME CORP5 citations60
US4446221AMay 1, 1984
Anodized supports and radiation sensitive elements therefrom
POLYCHROME CORP5 citations57