Inventor · disambiguated record
Erich Schiefer
Also filed as: SCHIEFER ERICH · SCHIEFER ERICH J
5 granted patents·2 pending applications·136 citations·filing 1986–2012
81Inventor score
Top patents by PatentIndex Score
7 records- 0191US4953390AMethod and a device for measuring the air/fuel ratio of an internal combustion engineAVL VERBRENNUNGSKRAFT MESSTECH·Filed 1989·Granted Sep 4, 1990·55 cites·25 claims
- 0286US4771176AMethod for quantitative analysis of hydrocarbonAVL VERBRENNUNGSKRAFT MESSTECH·Filed 1986·Granted Sep 13, 1988·62 cites·7 claims
- 0375US6570655B1Process and apparatus for measuring the opacity in gasesAVL LIST GMBH·Filed 2000·Granted May 27, 2003·13 cites·19 claims
- 0451US7222517B2Method for determining the characteristic properties of soot particlesAVL LIST GMBH·Filed 2004·Granted May 29, 2007·4 cites·22 claims
- 0547US7637144B2Measuring device, preferably a test stand for engines and vehicles for analyzing exhaust gases of a combustion engineAVL LIST GMBH·Filed 2004·Granted Dec 29, 2009·2 cites·12 claims
- 0639US2013060485A1Method for automatically operating a measuring device for measuring particles in gasesUNGER ERICH·Filed 2011·Application pending·0 cites
- 0738US2014311216A1Method for determining the particle count in the exhaust gas of internal combustion enginesSCHIEFER ERICH·Filed 2012·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Erich Schiefer 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 →