Inventor
JOHNS ROBERT H
US14 patents
⚠️ This page may combine multiple inventors who share the name “JOHNS ROBERT H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALLEGHENY LUDLUM CORP
7 patentsUS4715428ADec 29, 1987
Method and apparatus for direct casting of crystalline strip by radiant cooling
ALLEGHENY LUDLUM CORP21 citations80
US4678719AJul 7, 1987
Method and apparatus for continuous casting of crystalline strip
ALLEGHENY LUDLUM CORP19 citations71
US4897925AFeb 6, 1990
Apparatus for determining surface profiles of metallic workpieces
ALLEGHENY LUDLUM CORP5 citations61
US4858327AAug 22, 1989
Apparatus for determining an edge profile of a metallic workpiece
ALLEGHENY LUDLUM CORP6 citations61
US4768409ASep 6, 1988
Method and apparatus for servering thin strip
ALLEGHENY LUDLUM CORP3 citations61
US4821285AApr 11, 1989
Thermocouple selection switch
ALLEGHENY LUDLUM CORP1 citations51
US4944495AJul 31, 1990
Method and apparatus for leveling a refractory bed surface
ALLEGHENY LUDLUM CORP1 citations42
JOHNS ROBERT H
5 patentsUS4335386AJun 15, 1982
Bifilar antenna trap
JOHNS ROBERT H10 citations72
US4334228AJun 8, 1982
Bifilar antenna trap
JOHNS ROBERT H8 citations72
US3981219ASep 21, 1976
Practice violin and bow
JOHNS ROBERT H15 citations72
US4425565AJan 10, 1984
Multiple resonant coil using distributed capacity between turns
JOHNS ROBERT H5 citations61
US4413262ANov 1, 1983
Multiple frequency tuned circuit
JOHNS ROBERT H4 citations61