Compositions – Electrically conductive or emissive compositions – Metal compound containing
Reexamination Certificate
2005-12-27
2009-02-17
Kopec, Mark (Department: 1796)
Compositions
Electrically conductive or emissive compositions
Metal compound containing
C423S598000, C423S608000
Reexamination Certificate
active
07491349
ABSTRACT:
Disclosed is a titanium oxynitride with excellent hiding properties (light-blocking properties) which is also excellent in degree of blackness and oxidation stability. Specifically disclosed is a titanium oxynitride having a chemical composition expresses as TiNxOy.nSiO2(wherein Ti represents titanium atoms; N represents nitrogen atoms; O represents oxygen atoms; Si represents silicon atoms; x represents the ratio of nitrogen atoms relative to titanium atoms, y represents the ratio of oxygen atoms relative to titanium atoms, and x and y are respectively a real number of more than 0 but less than 2; and n represents the molar ratio of SiO2relative to TiNxOy which is a real number within a range of 0≦n≦0.05). This titanium oxynitride contains nitrogen atoms represented by N in an amount of not less than 17% by weight but less than 23% by weight, while having a specific surface area of 5-30 m2/g and a crystallite size determined by using an X-ray diffractometer of 17-25 nm.
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Yang et al “Optical properties of titanium oxynitride nanocrystals . . . ”, Chemical Physics Letters 383 (2004) 502-506.
Chiba Katsuichi
Isobe Kaoru
Takahashi Hideo
Yasuda Yuichi
Ishihara Sangyo Kaisha Ltd.
Kopec Mark
Manelli Denison & Selter PLLC
White Paul E.
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