Franz Amtmann
51Patents
5h-index
40Co-inventors
72Inventor score
Filing activity: May 20, 1999 → Mar 16, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6995651B2 | Communication station for inventorizing transponders by means of selectable memory areas of the transponders | Physics | 40 | Expired |
| US6559754B1 | System for the transmission of data from a data carrier to a station by means of one or at least one other auxiliary carrier signal | Physics | 13 | Expired |
| US8628018B2 | RFID circuit and method | Electricity | 7 | Active |
| US8848839B2 | Data carrier provided with at least two decoding stages | Physics | 7 | Active |
| US6301138A | Data carrier with load modulation means and with improved power supply in the process of load modulation | Electricity | 5 | Expired |
| US6510149B1 | Data carrier including a circuit with time slot determination means and time slot fixation means | Physics | 5 | Expired |
| US7834742B2 | Method of inventorying transponders by means of a communication station | Physics | 5 | Expired |
| US7295629B2 | Data carrier having a controllable carrier-signal receiving-means configuration | Physics | 4 | Expired |
| US6819223B2 | Transponder system with acknowledgements associated with respective transponders | Physics | 4 | Expired |
| US6816062B2 | Data carrier for transmitting different stored status information with different transmission parameters | Physics | 3 | Expired |
| US6583717B1 | Transponder system with acknowledgements associated with respective transponders | Physics | 3 | Expired |
| US6819221B1 | Method of determining a time value representing at least a part of the communication time interval of a transponder with a communication device | Physics | 3 | Expired |
| US6708891B2 | Data carrier having a communication resonant circuit and having means for changing the resonant frequency of this resonant circuit in either sense | Physics | 2 | Expired |
| US6442215B1 | Data carrier with at least two demodulation stages having different sensitivities for modulated carrier signals with different modulation intensities | Electricity | 2 | Expired |
| US9454471B2 | Electronic counter in non-volatile limited endurance memory | Electricity | 2 | Active |
| US7880587B2 | Communication system and anti-collision method | Electricity | 2 | Active |
| US7737822B2 | Method of recognizing whether a transponder belongs to a group of transponders | Physics | 1 | Active |
| US7599661B2 | Method for generating power supply interruption time information in a contactless data carrier | Physics | 1 | Expired |
| US7584322B2 | Method for storing and/or changing state-information of a memory as well as integrated circuit and data carrier | Physics | 1 | Expired |
| US8441342B2 | Pseudo-random authentification code altering scheme for a transponder and a base station | Physics | 1 | Active |
| US7570716B1 | Data carrier provided with at least two decoding stages | Physics | 1 | Expired |
| US7604170B2 | Portable device with an active communication station configuration and a passive data carrier configuration | Physics | 1 | Active |
| US8283975B2 | Data processing system | Electricity | 1 | Active |
| US6563882B1 | Write/read device for communication with transponders, having first coding means and second coding means | Physics | 1 | Expired |
| US8253540B2 | Method of reading data from transponders through a reader, a transponder, and a reader | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.