Radiation imagery chemistry: process – composition – or product th – Microcapsule – process – composition – or product
Reexamination Certificate
2007-10-22
2008-10-14
Walke, Amanda C. (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Microcapsule, process, composition, or product
C430S139000, C430S944000, C430S964000, C106S031030, C008S404000, C428S404000
Reexamination Certificate
active
07435524
ABSTRACT:
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.
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Belfield et al., “Multiphoton-absorbing organic materials for microfabrication, emerging optical applications and non-destructive three-dimensional imaging,” J. Phys. Org. Chem. 13:837-849 (2000).
Taylor et al., “Light and Electron Microscopic Analysis of Tattoos Treated by Q-Switched Ruby Laser,” The Journal of Investigative Dermatology, 97:131-136, (1991).
Anderson Richard Rox
Drill Craig A.
Mlynarczyk-Evans Susanna K.
Fish & Richardson P.C.
Freedom-2, Inc.
The General Hosptial Corporation
Walke Amanda C.
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