Inventor
SCHWERDT FRIEDRICH
DE4 patents
Patents
4 patentsUS4152195AMay 1, 1979
Method of improving the adherence of metallic conductive lines on polyimide layers
IBM94 citations90
US4705592ANov 10, 1987
Process for producing printed circuits
IBM50 citations86
US4039371AAug 2, 1977
Etchant for polyimides
IBM32 citations86
US4540464ASep 10, 1985
Method of renewing defective copper conductors on the external planes of multilayer circuit boards
IBM8 citations72