RF powder particles including an inductance element, a capacitance element, and a photovoltaic cell and method for exciting RF powder
US8704202B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2007 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Mar 29, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D2033/46
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
RF particles that can render more difficult fabrication of counterfeit notes and the like, can generate radiofrequency magnetic fields by oscillation of a tank circuit having a particular resonant frequency, and that can easily and reliably supply electric power for oscillation, RF powder, and a method for exciting the RF powder are provided. In an RF powder particle, a coil (inductance element) serving as an antenna and a capacitor (capacitance element) connected to the coil are formed on an insulating film surface of a substrate. The inductance element and the capacitance element form a tank circuit, and a photovoltaic cell for supplying power to the tank circuit is disposed on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.