Individual holder
SCHOEFFLER WILLIAM N
US·9 granted patents·331 citations·filing 1976–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
9 records- 0191US4895214ADirectional drilling toolSCHOEFFLER WILLIAM N·Filed 1988·Granted Jan 23, 1990·111 cites·8 claims
- 0286US4597454AControllable downhole directional drilling tool and methodSCHOEFFLER WILLIAM N·Filed 1984·Granted Jul 1, 1986·68 cites·9 claims
- 0385US4302022AHigh-low trailerSCHOEFFLER WILLIAM N·Filed 1979·Granted Nov 24, 1981·37 cites·6 claims
- 0464US5259467ADirectional drilling toolSCHOEFFLER WILLIAM N·Filed 1992·Granted Nov 9, 1993·42 cites·10 claims
- 0563US4577614AAdvanced quick ball release subSCHOEFFLER WILLIAM N·Filed 1983·Granted Mar 25, 1986·29 cites·4 claims
- 0654US4030745ATool retriever for wellsSCHOEFFLER WILLIAM N·Filed 1976·Granted Jun 21, 1977·20 cites·8 claims
- 0752US4408670AImpact cam subassembly for drillsSCHOEFFLER WILLIAM N·Filed 1981·Granted Oct 11, 1983·19 cites·7 claims
- 0831US4491148AAutomatic choke valveSCHOEFFLER WILLIAM N·Filed 1983·Granted Jan 1, 1985·2 cites·23 claims
- 0931US4427120AFolding pole truckbedSCHOEFFLER WILLIAM N·Filed 1981·Granted Jan 24, 1984·3 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when SCHOEFFLER WILLIAM N files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →