Inventor · disambiguated record

Ian Michael Threlfall

Also filed as: THRELFALL IAN M · THRELFALL IAN MICHAEL

2 granted patents·41 citations·filing 1986–1995

63Inventor score

Technology areasC08F G02B

Files withPILKINGTON BROTHERS PLC1 SOLA INT HOLDINGS1

Top patents by PatentIndex Score

2 records

0162US4851471AProcess for manufacturing photochromic articlesPILKINGTON BROTHERS PLC·Filed 1986·Granted Jul 25, 1989·16 cites·11 claims
0258US5882556AMethod of preparing photochromic articleSOLA INT HOLDINGS·Filed 1995·Granted Mar 16, 1999·25 cites·23 claims

Join the waitlist — get patent alerts

Get an alert when Ian Michael Threlfall 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 →