Inventor · disambiguated record
Frederick E. Russell
Also filed as: RUSSELL FREDERICK · RUSSELL FREDERICK E
7 granted patents·1 pending application·203 citations·filing 1981–2008
88Inventor score
Top patents by PatentIndex Score
8 records- 0181US4867872AAutomatically adjustable weir and environmentally protected sensorPROTECTAIRE SYST·Filed 1986·Granted Sep 19, 1989·52 cites·7 claims
- 0273US4610785ASludge separation apparatusPROTECTAIRE SYST·Filed 1985·Granted Sep 9, 1986·37 cites·11 claims
- 0372US5122280AMethod and apparatus for separating oil from oil/water mixturesPROTECTAIRE SYST·Filed 1990·Granted Jun 16, 1992·41 cites·3 claims
- 0465US5015393AAutomatically adjustable weir and environmentally protected sensor for a floating sludge removal systemPROTECTAIRE SYST·Filed 1989·Granted May 14, 1991·28 cites·6 claims
- 0558US4432870ASludge removal apparatusPROTECTAIRE SYST·Filed 1981·Granted Feb 21, 1984·16 cites·6 claims
- 0656US4713181AMethod and apparatus for handling sludgePROTECTAIRE SYST·Filed 1986·Granted Dec 15, 1987·19 cites·4 claims
- 0754US2009249739A1Window unit installation safety device for supporting a window unit in place during installationRUSSELL DAVID W·Filed 2008·Application pending·0 cites
- 0840US4545295ASludge removal apparatusPROTECTAIRE SYST·Filed 1983·Granted Oct 8, 1985·10 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Frederick E. Russell 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 →