AS

Alfons Spies

DG Dr. Johannes Heidenhain Gmbh: 14 patents #19 of 417Top 5%
JG Johannes Heidenhain Gmbh: 4 patents #6 of 95Top 7%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Seebruck, DE: #1 of 7 inventorsTop 15%
Overall (All Time): #242,214 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
6542088 Multiturn rotary encoder with multiple code carriers coupled by a reduction gear Steffen Bielski, Kurt Feichtinger, Erich Strasser, Johann Mitterreiter, Hermann Meyer +1 more 2003-04-01
6018881 Position measuring system 2000-02-01
5956659 Arrangement and method for the automatic correction of error-containing scanning signals of incremental position-measuring devices Wolfgang Holzapfel 1999-09-21
5841275 Magnetic measuring system having a particularly oriented auxiliary field 1998-11-24
5747995 Magnetic position measuring device using Hall elements as sensors and method for its operation 1998-05-05
5734266 Two piece measurement representation with magnetic elements magnetized with the same orientation 1998-03-31
5627466 Position measuring device having a sensor for sensing the distance between a scanning unit and a scale Josef Muller 1997-05-06
5619132 Position measuring device employing primary and auxiliary magnetic fields 1997-04-08
5386642 Position measuring instrument Gerald Metz 1995-02-07
5120132 Position measuring apparatus utilizing two-beam interferences to create phase displaced signals Arnold Teimel 1992-06-09
5111040 Photoelectric device for position measuring Harald Bernard 1992-05-05
5009506 Photoelectric position-measuring arrangement having a plurality of shiftable grids 1991-04-23
4819546 Device for measuring feed movement Alfons Ernst 1989-04-11
4792678 Photoelectric angle measuring device 1988-12-20
4612502 Magnetic length or angle measuring system having improved magnetic sensor arrangement 1986-09-16
4595991 Position measuring method and apparatus 1986-06-17
4490914 Error correction system for position measuring instruments 1985-01-01
4260205 Gas bearing 1981-04-07
4251119 Gas bearing for rapidly rotating parts 1981-02-17