Compositions – Barrier layer device compositions – Group iii element containing binary compound; e.g. – ga – as
Reexamination Certificate
2003-02-27
2008-03-04
Toomer, Cephia D. (Department: 1714)
Compositions
Barrier layer device compositions
Group iii element containing binary compound; e.g., ga, as
C252S06230Q, C385S131000, C331S094100
Reexamination Certificate
active
07338615
ABSTRACT:
A novel method of fabrication of periodic dielectric composites involving a flexible computer design stage, rapid growth of a second dielectric component. Laser stereolithography is used to form the polymer material layer by layer by photopolymerisation of a liquid. Certain materials constructed in this fashion exhibit a complete loss-free barrier to microwave propagation through the material for a desired band of frequencies and are commonly known as photonic band gap crystals. Such materials could provide a novel medium for all-angle wide- and narrow-band blocking filters, narrow-band transmission filters, reflective and loss-free substrates for planar antennas, and novel loss-free media for oscillator cavities and waveguides. In addition a novel crystal structure, particularly suited to the fabrication method mentioned above and consisting of concatenated polyhedrons, is revealed.
REFERENCES:
patent: 3668574 (1972-06-01), Barlow
patent: 5172267 (1992-12-01), Yablonovitch
patent: 5245466 (1993-09-01), Burns et al.
patent: 5385114 (1995-01-01), Milstein et al.
patent: 5471180 (1995-11-01), Brommer et al.
patent: 5505871 (1996-04-01), Harder
patent: 2222314 (1990-02-01), None
patent: 92 00185 (1992-01-01), None
patent: 92 15124 (1992-09-01), None
patent: 94 15389 (1994-07-01), None
patent: 96 42036 (1996-12-01), None
Shepherd Terence J
Tapster Paul R
Nixon & Vanderhye P.C.
Qinetiq Limited
Toomer Cephia D.
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