Resonance circuit tag, method for production thereof and method for changing resonance characteristic thereof
US6072394A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1996 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Feb 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/435
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention provides a resonance circuit tag that comprises an insulating substrate and a resonance circuit formed on the substrate. Additionally, the resonance circuit contains at least a capacitor and an inductor. Further, a dielectric of the capacitor satisfies at least either being foamable by heating or being capable of changing its thickness by not less than 10% by heating. The resonance circuit of the present invention also provides various advantages in that it can easily cease functioning, it does not inhibit labor-saving and speedy operation at the cash register, it facilitates large-scale production, and it eliminates degradation of the function of the article to which the tag has been attached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.