Inventor · disambiguated record
Otto P. Fest
Also filed as: FEST OTTO · FEST OTTO P · FEST SR OTTO P
8 granted patents·1 pending application·143 citations·filing 1988–2022
87Inventor score
Top patents by PatentIndex Score
9 records- 0190US7477080B1Current loop powered isolator and methodFEST OTTO·Filed 2006·Granted Jan 13, 2009·50 cites·5 claims
- 0278US7626378B1Signal powered A.C. current transformer electronic measuring circuitFEST OTTO P·Filed 2007·Granted Dec 1, 2009·10 cites·13 claims
- 0375US7684768B1Loop powered current-loop wireless transmitterFEST OTTO P·Filed 2007·Granted Mar 23, 2010·7 cites·20 claims
- 0473US4908569ATransformerless line powdered digital AC voltmeterFEST OTTO P·Filed 1988·Granted Mar 13, 1990·33 cites·7 claims
- 0570US9054725B1Signal or loop powered automatic multicolor display and controllerFEST SR OTTO P·Filed 2013·Granted Jun 9, 2015·6 cites·15 claims
- 0665US10222405B2Solid state analog meterFEST OTTO P·Filed 2018·Granted Mar 5, 2019·1 cites·10 claims
- 0754US6285094B1Loop-powered current-loop controller and methodFiled 1999·Granted Sep 4, 2001·21 cites·5 claims
- 0851US6213832B1Personal flotation device and related system for maintaining human body in partially-submerged horizontal positionFiled 1999·Granted Apr 10, 2001·15 cites·4 claims
- 0948US2024127976A1Meter replacement systemFEST OTTO·Filed 2022·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Otto P. Fest 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 →