Freedom-2, Inc.

The General Hospital Corporation

The General Hosptial Corporation

Susanna K Mlynarczyk-Evans

R Rox Anderson

Craig A Drill

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 markings. Colored microparticles are constructed with specific electromagnetic absorption and/or structural properties that facilitate changing and/or removing tissue markings made using the microparticles by applying specific energy (such as electromagnetic radiation from a laser or flash-lamp) to the tissue marking site.

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, and modifications are within the scope of the following claims.

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San Francisco, CA, United States of America

Susanna K Mlynarczyk-Evans