Glass composition and glass substrate

Details Glass composition and glass substrate Glass composition and glass substrate

2007-03-20

2007-03-20

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S067000, C428S846900

Reexamination Certificate

active

10633893

ABSTRACT:
A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 8% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3accounting for 60 to 90% by weight; a total of 0 to 20% by weight, zero inclusive, of R2O compounds, where R=Li, Na, and K; and a total of 0 to 15% by weight, zero inclusive, of TiO2+ZrO2+LnxOy, where LnxOyrepresents at least one compound selected from the group consisting of lanthanoid metal oxides, Y2O3, Nb2O5, and Ta2O5.

REFERENCES:
patent: 5972460 (1999-10-01), Tachiwana
patent: 6040029 (2000-03-01), Yamamoto et al.
patent: 6060168 (2000-05-01), Kohli
patent: 6303528 (2001-10-01), Speit et al.
patent: 6387510 (2002-05-01), Nakashima et al.
patent: 6440531 (2002-08-01), Kurachi et al.
patent: 6465381 (2002-10-01), Lautenschlager et al.
patent: 6818576 (2004-11-01), Ikenishi et al.
patent: 2002/0010066 (2002-01-01), Nakashima et al.
patent: 2003/0087746 (2003-05-01), Ritter et al.
patent: 2005/0101469 (2005-05-01), Peuchert et al.
patent: 10-1329 (1996-01-01), None
patent: 11-11974 (1999-01-01), None
patent: 11-199267 (1999-07-01), None
patent: 2000-203872 (2000-07-01), None
patent: 2001-019466 (2001-01-01), None
patent: 2001-26460 (2001-01-01), None
patent: 2001-348246 (2001-12-01), None
patent: 2002-3241 (2002-01-01), None
patent: 2002-167230 (2002-06-01), None
patent: 2002-255585 (2002-09-01), None
patent: 2002-348141 (2002-12-01), None
patent: 2004-161597 (2004-06-01), None
patent: 2004-277232 (2004-10-01), None
patent: 2004-277233 (2004-10-01), None
patent: 2004-352571 (2004-12-01), None
Japanese “Information Submission Statement”, dated May 20, 2005, for counterpart Japanese Patent Application No. 2003-153178, along with an English-translation thereof.
Japanese Offering of Information, dated Aug. 2, 2006, for counterpart Japanese Patent Application No. 2003-153178; Together with a copy of an English-language translation thereof.

Affiliated with

Also associated with

Rating

Glass composition and glass substrate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Glass composition and glass substrate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glass composition and glass substrate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3747303