Inventor · disambiguated record
David Schaeffer
Also filed as: SCHAEFFER DAVID · SCHAEFFER DAVID B
4 granted patents·2 pending applications·54 citations·filing 1996–2025
74Inventor score
Top patents by PatentIndex Score
6 records- 0187US10819112B1Feeder line fault response using direct current interconnection systemABB SCHWEIZ AG·Filed 2019·Granted Oct 27, 2020·6 cites·23 claims
- 0261US6460281B1Single trigger sequential firing mechanism for a double barrel firearmFiled 2001·Granted Oct 8, 2002·20 cites·18 claims
- 0361US2025364807A1Power System with Current Sensors for Fault DetectionABB SCHWEIZ AG·Filed 2025·Application pending·0 cites
- 0454US11811219B2Restoration of fault insulated feederABB SCHWEIZ AG·Filed 2019·Granted Nov 7, 2023·0 cites·13 claims
- 0548US2024170950A1Drive system with protection capabilityABB SCHWEIZ AG·Filed 2023·Application pending·0 cites
- 0636US5734116ANema cabinet monitor testerGEN TRAFFIC CONTROLS·Filed 1996·Granted Mar 31, 1998·28 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when David Schaeffer 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 →