Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7563685 | Bipolar-transistor and method for the production of a bipolar-transistor | Hartmut Grutzediek, Michael Rammensee | 2009-07-21 |
| 7488638 | Method for fabricating a voltage-stable PMOSFET semiconductor structure | Hartmut Grutzediek | 2009-02-10 |
| 7271070 | Method for producing transistors | Hartmut Grutzediek | 2007-09-18 |
| 6021785 | Procedure and device for cleaning disk-shaped objects in particular wafers by sonification with water as rinsing medium | Hartmut Grutzediek | 2000-02-08 |
| 5804978 | Circuit for feeding a Wheatstone Bridge with a rectangular waveform voltage | Hartmut Gruetzediek | 1998-09-08 |
| 5779425 | Procedure and facility for handling and transport of wafers in ultra-clean rooms | Hartmut Grutzediek | 1998-07-14 |
| 5718552 | Procedure and facility for handling and transport of wafers in ultra-clean rooms | Hartmut Grutzediek | 1998-02-17 |
| 5571731 | Procedure for the manufacture of bipolar transistors without epitaxy and with fully implanted base and collector regions which are self-positioning relative to each other | Hartmut Gr utzediek, Wolfgang Winkler, Michel Pierschel, Karl-Ernst Ehwald | 1996-11-05 |
| 5327137 | Multiple ramp procedure with higher order noise shaping | Hartmut Grutzediek | 1994-07-05 |
| 5066955 | Analog to digital converters with convergence accelerating signals | Hartmut Grutzediek | 1991-11-19 |
| 4420055 | Apparatus for measuring weight and force | Hartmut Grutzediek, Erich Knothe, Franz-Josef Melcher | 1983-12-13 |
| 4361831 | Analog-digital converter utilizing multiple ramp integrating techniques | Hartmut Grutzediek | 1982-11-30 |