Issued Patents All Time
Showing 25 most recent of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12224364 | Semitransparent thin-film solar module | Andreas Heiss, Joerg Palm, Helmut Vogt | 2025-02-11 |
| 11837675 | Semitransparent thin-film solar module | Andreas Heiss, Joerg Palm, Helmut Vogt | 2023-12-05 |
| 11183605 | Method for producing a layer structure for thin-film solar cells using etching or laser ablation to produce rear-electrode-layer-free region | Helmut Vogt | 2021-11-23 |
| 9899561 | Method for producing a compound semiconductor, and thin-film solar cell | Stefan Jost, Thomas DALIBOR, Patrick Eraerds | 2018-02-20 |
| 8043909 | Porous semiconductive film and process for its production | Andre Ebbers, Martin Trocha, Martin Brandt, Martin Stutzmann, Hartmut Wiggers | 2011-10-25 |
| D462559 | Compact disc rack | — | 2002-09-10 |
| 6190172 | Modular video display system | — | 2001-02-20 |
| 6188893 | Subscriber connection net for the connection of subscriber stations to an exchange using a radio system | Volker Rogasch | 2001-02-13 |
| 6009085 | Arrangement for the synchronization of the radio transmission in a radiotelephone subscriber connection network | — | 1999-12-28 |
| 6005875 | Public communications service with multiple access use of trunk links | — | 1999-12-21 |
| 5927985 | Modular video display system | — | 1999-07-27 |
| 5746599 | Modular video display system | — | 1998-05-05 |
| 5487665 | Video display system and method for generating and individually positioning high resolution inset images | Harold R. Streid | 1996-01-30 |
| 5274694 | Radio communication network based on digital local exchanges | Josef Forer | 1993-12-28 |
| 5274692 | Method for testing the line connection before switching from a telephone switching center to be placed out of service to a new digital telephone switching center to be placed into service | Tom Miller | 1993-12-28 |
| 5043977 | Method and a circuit arrangement for setting the subscriber line dummy impedances of programmable hybrid circuits | Moni Malek | 1991-08-27 |
| 4905227 | Circuit for subscriber line interface circuits in a digital time-division multiplex communication switching center | Norbert Wingerath | 1990-02-27 |
| 4893309 | Digital interface between at least two subscriber line interface circuits and a processing unit | Hans-Werner Rudolf, Harald Stader, Norbert Wingerath, Christopher C. A. Priest, Nigel P. Dyer +7 more | 1990-01-09 |
| 4881226 | Digital interface of an integrated subscriber line interface circuit | Hans-Werner Rudolf, Harald Stader, Norbert Wingerath, Christopher C. A. Priest, Nigel P. Dyer +7 more | 1989-11-14 |
| 4858226 | Method for the operation of an interface circuit between a central portion and local portions of a subscriber termination module of a digital time multiplex telecommunications network | Hans-Werner Rudolf, Harald Stader, Norbert Wingerath | 1989-08-15 |
| 4852159 | Circuit arrangement for a module in the exchange of a digital TDM telecommunications network | Manfred Drescher | 1989-07-25 |
| 4809258 | Circuit arrangement for the indication of loop closure during the ringing condition | Norbert Wingerath | 1989-02-28 |
| 4720845 | Protective circuit for the overvoltage protection of a subscriber line interconnect circuit | Hans-Werner Rudolf, Roland Krimmer | 1988-01-19 |
| 4715058 | Protective circuit for the overvoltage protection of a subscriber line interconnect circuit | Hans-Werner Rudolf, Roland Krimmer | 1987-12-22 |
| 4651110 | Circuit arrangement for zero point balancing of an integrated operational amplifier | David Sealer | 1987-03-17 |