Inventor · disambiguated record
Ludger Alfes
Also filed as: ALFES LUDGER
9 granted patents·2 pending applications·41 citations·filing 1988–2015
83Inventor score
Top patents by PatentIndex Score
11 records- 0182US8985587B2Shaft seal for a turbomachineALFES LUDGER·Filed 2010·Granted Mar 24, 2015·6 cites·15 claims
- 0269US4899850ALubricating device for a turbomachineMANNESMANN AG·Filed 1988·Granted Feb 13, 1990·28 cites·21 claims
- 0363US8714907B2Arrangement comprising a shaft sealALFES LUDGER·Filed 2009·Granted May 6, 2014·2 cites·20 claims
- 0460US8529217B2Method for operating a compressor device and associated compressor deviceALFES LUDGER·Filed 2008·Granted Sep 10, 2013·3 cites·16 claims
- 0558US8647052B2Arrangement comprising a shaft sealALFES LUDGER·Filed 2009·Granted Feb 11, 2014·1 cites·20 claims
- 0645US2015322959A1Turbo machine and method for the operation thereofSIEMENS AG·Filed 2013·Application pending·0 cites
- 0739US10337520B2Fluid energy machine having a tandem dry gas sealSIEMENS AG·Filed 2015·Granted Jul 2, 2019·0 cites·20 claims
- 0838US9568014B2Gas system for compressing a process gasALFES LUDGER·Filed 2012·Granted Feb 14, 2017·0 cites·8 claims
- 0938US2012093643A1Multistage turbocompressorALFES LUDGER·Filed 2010·Application pending·0 cites
- 1033USD810785SConcentric shoveled manifoldSIEMENS AG·Filed 2015·Granted Feb 20, 2018·1 cites·1 claims
- 1129USD810140SConcentric shoveled manifoldSIEMENS AG·Filed 2015·Granted Feb 13, 2018·0 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Ludger Alfes 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 →