EP0653385A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ultraviolet ray absorbent colored glass
Assignee: AGC Inc
•
Filing: 1994-11-08
•
Granted: —
•
Expires: 2014-11-08
Abstract
Abstract Ultraviolet ray absorbent colored glass for buildings and vehicles, which consists essentially of from 65 to 75 wt% of SiO₂, from 0.1 to 5.0 wt% of Al₂O₃, from 10 to 18 wt% of Na₂O, from 0 to 5 wt% of K₂O, from 5 to 15 wt% of CaO, from 1 to 6 wt% of MgO, from 0.05 to 1.0 wt% of SO₃, from 0.08 to 0.20 wt% of vanadium as calculated as V₂O₅, from 0.36 to 0.65 wt% of MnO₂, from 0 to 0.0020 wt% of CoO and from 0.06 to 0.18 wt% of iron as calculated as Fe₂O₃, wherein from 0 to 10 wt% of the total iron content is FeO.
Inventors
- 👤 Mizuki Asahi Glass Company Ltd. Itoh
- 👤 Takashi Asahi Glass Company Ltd. Kijima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:21
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/08; C03C4/085; C03C3/00; C03C3/04; C03C3/076; C03C3/083; C03C3/085; C03C3/087; C03C4/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
Ultraviolet ray absorbent colored glass for buildings and vehicles, which consists essentially of from 65 to 75 wt% of SiO₂, from 0.1 to 5.0 wt% of Al₂O₃, from 10 to 18 wt% of Na₂O, from 0 to 5 wt% of K₂O, from 5 to 15 wt% of CaO, from 1 to 6 wt% of MgO, from 0.05 to 1.0 wt% of SO₃, from 0.08 to 0.20 wt% of vanadium as calculated as V₂O₅, from 0.36 to 0.65 wt% of MnO₂, from 0 to 0.0020 wt% of CoO and from 0.06 to 0.18 wt% of iron as calculated as Fe₂O₃, wherein from 0 to 10 wt% of the total iron content is FeO.
Claim 2
Dependent Claim
37 words
The ultraviolet ray absorbent colored glass according to Claim 1, which has a brown color, whereby the dominant wavelength by illuminant C is from 574 to 581 nm, and the excitation purity is from 4 to 6%.
Claim 3
Dependent Claim
44 words
The ultraviolet ray absorbent colored glass having a brown color according to Claim 2, which has, in a thickness of from 3 to 5 mm, a luminous transmittance of illuminant A of at least 70% and an ultraviolet ray transmittance of at most 15%.
Claim 4
Dependent Claim
34 words
The ultraviolet ray absorbent colored glass having a brown color according to Claim 3, which has, in a thickness of from 3 to 5 mm, a transmittance of 350 nm of at most 10%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.