Inventor
WIDMER ROLAND W
CH4 patents
⚠️ This page may combine multiple inventors who share the name “WIDMER ROLAND W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RCA CORP
3 patentsUS4155627AMay 22, 1979
Color diffractive subtractive filter master recording comprising a plurality of superposed two-level relief patterns on the surface of a substrate
RCA CORP147 citations93
US4124473ANov 7, 1978
Fabrication of multi-level relief patterns in a substrate
RCA CORP21 citations78
US4387013AJun 7, 1983
Reactive sputter etching of aluminum
RCA CORP1 citations47