Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7436847 | Method for internet-protocol-based transmission of communication data | — | 2008-10-14 |
| 7372846 | Method for transmitting time information via a data packet network | — | 2008-05-13 |
| 6922742 | Node device for a serial databus connecting a number of devices | — | 2005-07-26 |
| 6559696 | Circuit arrangement for generating a clock-pulse signal having a frequency synchronous with a reference clock-pulse signal | Juergen Heitmann | 2003-05-06 |
| 6313621 | Method and arrangement for determining the phase difference between two timing signals | — | 2001-11-06 |
| 5703480 | Method and arrangement for determining the phase difference between clock signals in a communication equipment | — | 1997-12-30 |
| 5574408 | Oscillator circuit having a memory that stores the characteristic information of the individual oscillator crystal | — | 1996-11-12 |
| 5467059 | Temperature-stabilized oscillator circuit having heating elements that can be externally influenced | — | 1995-11-14 |
| 5430707 | Method and apparatus for communicating operating information between centralized and decentralized equipment of a communication system | Peter Strohmeier, Friedrich Geissler, Juergen Heitmann | 1995-07-04 |
| 5052028 | Method for synchronizing the phase of clock signals of two clock generators in communications networks | — | 1991-09-24 |
| 4893097 | Method for temperature compensation of a voltage-controlled crystal oscillator in a phase control circuit | — | 1990-01-09 |
| 4864253 | Phase locked loop wherein phase comparing and filtering are performed by microprocessor | — | 1989-09-05 |
| 4835481 | Circuit arrangement for generating a clock signal which is synchronous in respect of frequency to a reference frequency | Friedrich Geissler, Juergen Heitmann | 1989-05-30 |
| 4754478 | Method of adding additional subscribers and signals to existing connection | Helmut Leibersberger, Heinz Zander | 1988-06-28 |