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| Number | Title | Issue Date |
| 7175950 | Permanent, removable tissue markings While the invention has been described in conjunction with the detailed description thereof, the foregoing description is intended to illustrate and not limit the scope of the invention, which is defined by the scope of the appended claims. Other aspects, advantages... | 02/13/2007 |
| 6881249 | Permanent, removable tissue markings The present invention provides microparticles that create permanent tissue markings, such as tattoos, designed in advance for change and/or removal on demand, as well as methods for implanting the microparticles in tissue and changing and/or removing the resulting m... | 04/19/2005 |
| 6800122 | Permanent, removable tissue markings The present invention provides microparticles that create permanent tissue markings, such as tattoos, designed in advance for change and/or removal on demand, as well as methods for implanting the microparticles in tissue and changing and/or removing the resulting m... | 10/05/2004 |
