Inventor · disambiguated record

Willis J. Ludwig

Also filed as: LUDWIG WILLIS J

2 granted patents·25 citations·filing 1978–1982

60Inventor score

Technology areasB01J Y10S

Files withMINNESOTA MINING & MFG2

Top patents by PatentIndex Score

2 records

0162US4201404APressure-sensitive marking materialsMINNESOTA MINING & MFG·Filed 1978·Granted May 6, 1980·17 cites·12 claims
0236US4461496ASoap having improved carbonless imaging propertiesMINNESOTA MINING & MFG·Filed 1982·Granted Jul 24, 1984·8 cites·18 claims

Join the waitlist — get patent alerts

Get an alert when Willis J. Ludwig files or is granted a new patent.

We store only your email — no account needed. See our privacy policy.

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →