Inventor · disambiguated record

Douglas I. Exall

Also filed as: EXALL DOUGLAS I · GOSS MICHAEL J

2 granted patents·127 citations·filing 1978–1986

69Inventor score

Technology areasE21B G01N

Files withPETRO CANADA INC1 TEXACO CANADA INC1

Top patents by PatentIndex Score

2 records

0187US4788852AMetering chokePETRO CANADA INC·Filed 1986·Granted Dec 6, 1988·77 cites·8 claims
0278US4217956AMethod of in-situ recovery of viscous oils or bitumen utilizing a thermal recovery fluid and carbon dioxideTEXACO CANADA INC·Filed 1978·Granted Aug 19, 1980·50 cites·13 claims

Join the waitlist — get patent alerts

Get an alert when Douglas I. Exall 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 →