Optical glass suitable for mold forming

Details Optical glass suitable for mold forming Optical glass suitable for mold forming

2006-12-19

2006-12-19

Lorengo, J. A. (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S048000

Reexamination Certificate

active

07151064

ABSTRACT:
An optical glass suitable for mold forming having a metal composition in wt % in terms of metal oxides calculated from the composition of the following components: P2O534–50%, Li2O 2–9%, Na2O 7–28%, K2O 3–27%, provided that the total of R2O is 17–41% (R: Li, Na, K), Al2O36.5–30%, ZnO 0–22%, BaO 0–21%, SrO 0–18%, CaO 0–16%, MgO 0–14%, provided that the total of R′O is 0–34% (R′: Zn, Ba, Sr, Ca, Mg), ZrO20–1.5% and F 1.5–32% relative to the total weight of the oxides, and exhibits a glass transition temperature (Tg) of 350° C. or lower and a specific gravity (Sg) of 3.1 or less and is excellent in chemical durability. The optical glass can be press formed at a low temperature of about 270 to 400° C.

REFERENCES:
patent: 3656976 (1972-04-01), Izumitani et al.
patent: 4333848 (1982-06-01), Myers et al.
patent: 4362819 (1982-12-01), Olszewski et al.
patent: 4363879 (1982-12-01), Broemer et al.
patent: 4433062 (1984-02-01), Courbin et al.
patent: 5529961 (1996-06-01), Aitken et al.
patent: 6156684 (2000-12-01), Sato et al.
patent: 6566289 (2003-05-01), Aronica et al.
patent: 2004/0087428 (2004-05-01), Otsuka et al.
patent: 3105664 (1982-01-01), None
patent: 365235 (1990-04-01), None
patent: 2476631 (1981-08-01), None
patent: 2069994 (1983-06-01), None
patent: 40-14301 (1965-07-01), None
patent: 57-27941 (1982-02-01), None
patent: 59-33545 (1984-08-01), None
patent: 60-171244 (1985-09-01), None
patent: 60-210545 (1985-10-01), None
patent: 61-36136 (1986-02-01), None
patent: 63-144141 (1988-06-01), None
patent: 2-116642 (1990-05-01), None
patent: 2-124743 (1990-05-01), None
patent: 3-40934 (1991-02-01), None
patent: 5-132339 (1993-05-01), None
patent: 8-183632 (1996-07-01), None
patent: 9-278479 (1997-10-01), None
patent: 9-301735 (1997-11-01), None
patent: 11-139845 (1999-05-01), None
patent: P2003-26439 (2003-01-01), None
patent: 97-897 (1987-01-01), None
patent: 8100918 (1981-09-01), None

Affiliated with

Also associated with

Rating

Optical glass suitable for mold forming does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical glass suitable for mold forming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical glass suitable for mold forming will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3717951