Inventor · disambiguated record
James B. Renfroe, Jr.
Also filed as: RENFROE JR JAMES B
4 granted patents·121 citations·filing 1985–1988
80Inventor score
Technology areasE21B
Files withOTIS ENG CO4
Top patents by PatentIndex Score
4 records- 0161US4834176AWell valveOTIS ENG CO·Filed 1988·Granted May 30, 1989·33 cites·21 claims
- 0260US4632184ASubmersible pump safety systemsOTIS ENG CO·Filed 1985·Granted Dec 30, 1986·36 cites·6 claims
- 0356US4646828AApparatus for enhanced oil recoveryOTIS ENG CO·Filed 1985·Granted Mar 3, 1987·28 cites·21 claims
- 0452US4624310AWell apparatusOTIS ENG CO·Filed 1985·Granted Nov 25, 1986·24 cites·11 claims
Join the waitlist — get patent alerts
Get an alert when James B. Renfroe, Jr. 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 →