Inventor · disambiguated record
John Blanchfield
Also filed as: BLANCHFIELD JOHN · BLANCHFIELD JOHN H
3 granted patents·112 citations·filing 1982–2001
74Inventor score
Top patents by PatentIndex Score
3 records- 0192US6647891B2Range-finding based image processing rail way servicing apparatus and methodNORFOLK SOUTHERN CORP·Filed 2001·Granted Nov 18, 2003·90 cites·48 claims
- 0242US4457060ARail anchor removerSOUTHERN RAILWAY CO·Filed 1982·Granted Jul 3, 1984·11 cites·7 claims
- 0338US5415087AMobile tie banding apparatusNORFOLK SOUTHERN RAILWAY CO·Filed 1994·Granted May 16, 1995·11 cites·16 claims
Join the waitlist — get patent alerts
Get an alert when John Blanchfield 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 →