Stock material or miscellaneous articles – Self-sustaining carbon mass or layer with impregnant or...
Reexamination Certificate
2008-06-17
2008-06-17
McNeil, Jennifer (Department: 1794)
Stock material or miscellaneous articles
Self-sustaining carbon mass or layer with impregnant or...
C428S698000, C432S258000
Reexamination Certificate
active
07387835
ABSTRACT:
The invention provides a SiC coated carbonaceous material and a carbonaceous material to be coated with SiC each of which is reduced in contents of such impurities as nitrogen and boron. The SiC coated carbonaceous material comprises a carbonaceous material and a SiC coating having a nitrogen content of 5×1016atoms/cm3or lower as measured by SIMS. Further, the SiC-coated carbonaceous material comprises a carbonaceous material and a SiC coating having a boron content of 2×1016atoms/cm3or lower as measured by SIMS. The carbonaceous substrate material preferably has nitrogen content of 5×1018atoms/cm3or lower as measured by SIMS. The base carbonaceous material also preferably has boron content of 1×1016atoms/cm3or lower as measured by SIMS.
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McNeil Jennifer
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Speer Timothy M.
Toyo Tanso Co., Ltd.
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