Inventor · disambiguated record
Erwin Spanner
Also filed as: SPANNER ERWIN
18 granted patents·344 citations·filing 1990–2015
95Inventor score
Top patents by PatentIndex Score
18 records- 0183US6369951B1Beam splitter assembly and interferometer having a beam splitter assemblyHEIDENHAIN GMBH DR JOHANNES·Filed 2000·Granted Apr 9, 2002·30 cites·31 claims
- 0281US5333048APolarizing interferometric displacement measuring arrangementHEIDENHAIN GMBH DR JOHANNES·Filed 1993·Granted Jul 26, 1994·39 cites·11 claims
- 0380US5977539AOptical position-measuring device having reference mark graduation structures with chirp fieldsHEIDENHAIN GMBH DR JOHANNES·Filed 1997·Granted Nov 2, 1999·44 cites·16 claims
- 0472US7542149B2Optics system for an interferometer that uses a measuring mirror, a reference mirror and a beam deflectorHEIDENHAIN GMBH DR JOHANNES·Filed 2005·Granted Jun 2, 2009·8 cites·4 claims
- 0571US5786931APhase grating and method of producing phase gratingHEIDENHAIN GMBH DR JOHANNES·Filed 1996·Granted Jul 28, 1998·32 cites·11 claims
- 0670US6265992B1Position measuring system and method for operating a position measuring systemHEIDENHAIN GMBH DR JOHANNES·Filed 2000·Granted Jul 24, 2001·12 cites·9 claims
- 0769US5711084ALinear encoderHEIDENHAIN GMBH DR JOHANNES·Filed 1996·Granted Jan 27, 1998·29 cites·24 claims
- 0868US5079418APosition measuring apparatus with reflectionHEIDENHAIN GMBH DR JOHANNES·Filed 1990·Granted Jan 7, 1992·24 cites·19 claims
- 0967US5574560ADual-beam interferometer with a phase gratingHEIDENHAIN GMBH DR JOHANNES·Filed 1995·Granted Nov 12, 1996·34 cites·30 claims
- 1066US9188424B2InterferometerHEIDENHAIN GMBH DR JOHANNES·Filed 2013·Granted Nov 17, 2015·2 cites·25 claims
- 1166US7701593B2Optical position measuring arrangementHEIDENHAIN GMBH DR JOHANNES·Filed 2008·Granted Apr 20, 2010·4 cites·21 claims
- 1266US6907372B1Device for position indication and detection of guidance errorsHEIDENHAIN GMBH DR JOHANNES·Filed 2000·Granted Jun 14, 2005·13 cites·27 claims
- 1362US6535290B1Optical position measuring device with a beam splitterHEIDENHAIN GMBH DR JOHANNES·Filed 1999·Granted Mar 18, 2003·25 cites·18 claims
- 1458US9733068B2Optical position measuring deviceDR JOHANNES HEIDENHAN GMBH·Filed 2015·Granted Aug 15, 2017·1 cites·19 claims
- 1558US7639366B2Position-measuring device for determining the position of two objects movable with respect to each other along a measuring direction, and method for forming a reference pulse for such a position-measuring deviceHEIDENHAIN GMBH DR JOHANNES·Filed 2006·Granted Dec 29, 2009·3 cites·47 claims
- 1653US6097318APosition measuring system and method for operating a position measuring systemHEIDENHAIN GMBH DR JOHANNES·Filed 1998·Granted Aug 1, 2000·14 cites·52 claims
- 1753US5206704APosition measuring apparatus and method of use thereofHEIDENHAIN GMBH DR JOHANNES·Filed 1991·Granted Apr 27, 1993·16 cites·47 claims
- 1850US5500734APhotoelectric position measuring system with integral optical circuit having phase shifted interference gratingsHEIDENHAIN GMBH DR JOHANNES·Filed 1994·Granted Mar 19, 1996·14 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →