Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Applying hot isostatic fluid pressure to preform using...
Reexamination Certificate
2011-03-01
2011-03-01
Daniels, Matthew J. (Department: 1741)
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Applying hot isostatic fluid pressure to preform using...
C264S676000
Reexamination Certificate
active
07897098
ABSTRACT:
The present invention uses a post-sinter-HIP anneal to increase the total transmittance of ceramic discharge vessels comprised of a submicron-grained alumina doped with MgO. After the anneal, the submicron-grained alumina discharge vessels have high values of both total and in-line transmittance, and are thus suitable for use in focused-beam, short-arc lamps. In particular, the total transmittance of the discharge vessel is increased to greater than 92% in the wavelength range from about 400 nm to about 700 nm.
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Clark Robert F.
Daniels Matthew J.
Kemmerle, III Russell J
Osram Sylvania Inc.
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