Inventor · disambiguated record
John J. Ludwick
Also filed as: LUDWICK JOHN J
4 granted patents·56 citations·filing 1983–1986
74Inventor score
Top patents by PatentIndex Score
4 records- 0161US4821286AQuaternary signal regeneratorAMERICAN TELEPHONE & TELEGRAPH·Filed 1986·Granted Apr 11, 1989·34 cites·5 claims
- 0254US4606046AConverter/line driver circuit for a line repeaterAT & T BELL LAB·Filed 1983·Granted Aug 12, 1986·18 cites·8 claims
- 0328US4663583AAutomatically variable phase characteristic all-pass circuitAT & T CO·Filed 1986·Granted May 5, 1987·4 cites·5 claims
- 0424US4739196AWide range linear inpedance controller using junction field effect transistorsAMERICAN TELEPHONE & TELEGRAPH·Filed 1986·Granted Apr 19, 1988·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →