Glass

Details Glass Glass

2011-03-01

2011-03-01

Group, Karl E (Department: 1731)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S073000, C501S077000, C501S079000

Reexamination Certificate

active

07897531

ABSTRACT:
Glass has optical constants of a refractive index (nd) of 1.79 or over and an Abbe number (νd) of 27 or over and a specific gravity (D) of 3.20 or over and is free from devitrification in the interior of the glass in a reheat test. The glass has chemical durability according to the Powder Method (acid-proof property RA according to the Powder Method) which is Class 1.

REFERENCES:
patent: 3898093 (1975-08-01), Faulstich et al.
patent: 4084978 (1978-04-01), Sagara et al.
patent: 4612295 (1986-09-01), Sagara
patent: 4742028 (1988-05-01), Boudot et al.
patent: 6413894 (2002-07-01), Sato
patent: 2006/0105900 (2006-05-01), Kasuga et al.
patent: 2824982 (1979-12-01), None
patent: 4210011 (1993-07-01), None
patent: 0227269 (1987-07-01), None
patent: 59-050048 (1984-03-01), None
patent: 6-24789 (1994-02-01), None
patent: WO 99/19266 (1999-04-01), None
patent: WO 02/072491 (2002-09-01), None
International Search Report of PCT/JP2006/300677, date of mailing Jul. 6, 2006.
Translation of Chinese Office Action dated Mar. 1, 2010, issued in corresponding Chinese Patent Application No. 20068002489.x.
Translation of Germany Office Action dated Jun. 17, 2009, issued in corresponding Germany patent Application No. 112006000203.1.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2718660