Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Reexamination Certificate
2011-08-02
2011-08-02
Group, Karl (Department: 1731)
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
C501S045000, C501S048000
Reexamination Certificate
active
07989377
ABSTRACT:
Provided is an optical glasses that has high refractivity and low dispersion and anomalous partial dispersion capability and that has excellent processability and devitrification resistance and ensures that the occurrence of striae can be inhibited, the optical glass including an optical glass having a refractive index (nd) of 1.54 to 1.60, an Abbe's number (vd) of 65 to 78, a partial dispersion ratio of 0.530 or more, a specific gravity of 4.0 or less and a viscosity, measured at its liquidus temperature, of 4 dPa·s or more and an optical glass comprising as cationic components, by cationic %, 20 to 50% of p5+, 0.1 to 20% of Al3+, 0.1 to 20% of Mg2+, 0 to 20% of Ca2+, 0 to 20% of Sr2+, 0.1 to 30% of Ba2+and 0 to 10% of Y3+, and further comprising, as anionic components, F−and O2−, wherein the ratio of the content of Mg2+to the content of Al3+, Mg2+/Al3+, based on cationic %, is 1.2 or less.
REFERENCES:
patent: 4990468 (1991-02-01), Komiya et al.
patent: 7192897 (2007-03-01), Yamane et al.
patent: 7396787 (2008-07-01), Ritter et al.
patent: 7595272 (2009-09-01), Ikenishi et al.
patent: 7598189 (2009-10-01), Fujiwara et al.
patent: 2004/0082460 (2004-04-01), Yamane et al.
patent: 2004/0087428 (2004-05-01), Otsuka et al.
patent: 2004/0259714 (2004-12-01), Fujiwara et al.
patent: 2005/0054511 (2005-03-01), Fujiwara et al.
patent: 2006/0150682 (2006-07-01), Fujiwara et al.
patent: 2006/0223689 (2006-10-01), Ikenishi et al.
patent: 2007/0027017 (2007-02-01), Hachitani
patent: 2007/0060464 (2007-03-01), Ikenishi et al.
patent: 2009/0314033 (2009-12-01), Zou et al.
patent: 2009/0325774 (2009-12-01), Ikenishi
patent: 1 707 541 (2006-10-01), None
patent: 53-105517 (1978-09-01), None
patent: 55-144448 (1980-11-01), None
patent: 1-219037 (1989-09-01), None
patent: 2-124740 (1990-05-01), None
patent: 2-204342 (1990-08-01), None
patent: 04-43854 (1992-07-01), None
patent: 6-157068 (1994-06-01), None
patent: 8-104538 (1996-04-01), None
patent: 9-211505 (1997-08-01), None
patent: 2003-40645 (2003-02-01), None
patent: 2003-95694 (2003-04-01), None
patent: 2003-160356 (2003-06-01), None
patent: 2004-83290 (2004-03-01), None
patent: 2004-137100 (2004-05-01), None
patent: 2005-75687 (2005-03-01), None
patent: WO 03/037813 (2003-05-01), None
patent: WO 2007/114172 (2007-10-01), None
Bolden Elizabeth A
Group Karl
Hoya Corporation
Nixon & Vanderhye P.C.
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