Changeable tattoos
US6192890A · kind A · utility
Inventors
Key dates
| Filing date | Mar 30, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Mar 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/026
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A changeable tattoo system with an electrically modifiable ink that includes biocompatible microspheres or particles encapsulated in a clear microsphere shell of diameter 30-150 microns. A hard overcoat is used to reduce deformation under loading from the skin. Tattoos are implanted with a novel tattoo needle with a flat or concave forward tip. A conformable set of drive electrodes is applied to the skin to manipulate the tattoo image using magnetic or electrophoretic techniques that include the use of an electrophetic backplane of the body's core capacitence. A capactive coupling electrode is used to establish this connection. Greyscale and color gradient images are created by calibrating the system before use and pulsing EM fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.