Patent US5545596A successfully refreshed from Google Patents.
US5545596A
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Composition for colored glass intended for the manufacture of glazing panes
Assignee: Saint Gobain Glass France SAS
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Filing: 1995-06-07
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Granted: 1996-08-13
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Expires: 2015-06-07
Abstract
Abstract The invention concerns compositions of colored glasses intended for the manufacture of glazing panes suitable for mounting in an automobile vehicle. The panes are of silico-sodo-calcic glasses having a total energy transmission factor (T E ) less than the light transmission factor under illuminant A (TL A ), the factor T E being from 10 to 48% and the factor TL A from 20 to 60 % for a thickness of 3.85 mm; these glasses comprise (in % by weight), as coloring agents, from 0.45 to 2.5% of Fe 2 O 3 (total iron), from 0.001 to 0.02% of CoO, from 0 to 0.0025% of Se and from 0 to 0.1% of Cr 2 O 3 .
Inventors
- 👤 Pedro Alvarez Casariego
- 👤 Jean-Jacques Massol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:03
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/083; C03C3/085; C03C3/087; C03C4/00; C03C4/02; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/905
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
A coloured glass composition comprising the following oxides within the following limits by weight: ______________________________________
SiO.sub.2
64 to 75%
Al.sub.2 O.sub.3
0 to 5%
B.sub.2 O.sub.3
0 to 5%
CaO 5 to 15%
MgO 0 to 5%
Na.sub.2 O
10 to 18%
K.sub.2 O
0 to 5%
______________________________________ and consisting essentially of as colouring agents: ______________________________________
Fe.sub.2 O.sub.3 (total iron)
0.5 to 1.5%
with FeO content representing from
16 to 55%
of the total iron content expressed in
the form of Fe.sub.2 O.sub.3
CoO 0.003 to 0.015%
Cr.sub.2 O.sub.3 0.025 to 0.09%
Se 0 to 0.0025%
______________________________________ wherein the glasses have a total energy transmission factor (T E ) less than the light transmission factor under illuminant A (TL A ), the factor T E being from 10 to 48% and the factor TL A from 20 to 60% for a thickness of 3.85 millimetres.
Claim 2
Dependent Claim
145 words
A coloured glass composition comprising the following oxides within the following limits by weight: ______________________________________
SiO.sub.2
64 to 75%
Al.sub.2 O.sub.3
0 to 5%
B.sub.2 O.sub.3
0 to 5%
CaO 5 to 15%
MgO 0 to 5%
Na.sub.2 O
10 to 18%
K.sub.2 O
0 to 5%
______________________________________ and consisting essentially of as colouring agents: ______________________________________
Fe.sub.2 O.sub.3 (total iron)
0.5 to 1.5%
with FeO content representing from
16 to 55%
of the total iron content expressed in
the form of Fe.sub.2 O.sub.3
CoO 0.003 to 0.015%
Cr.sub.2 O.sub.3 0.025 to 0.09%
Se 0 to 0.0025%
______________________________________ wherein the glasses have a total energy transmission factor (T E ) less than the light transmission factor under illuminant A (TL A ), the factor T E being from 10 to 48% and the factor TL A from 20 to 60% for a thickness of 3.85 millimetres.
Claim 3
Dependent Claim
29 words
The composition according to claim 1, wherein the FeO content represents from 20 to 40% of the total iron expressed in the form of Fe 2 O 3 .
Claim 4
Dependent Claim
31 words
A glazing pane comprising a coloured glass sheet, wherein the coloured glass sheet has a composition as claimed in claim 1 and having a thickness of from 2 to 8 millimetres.
References Cited (Backward Citations)
US2974052A
Cited
US3296004A
Cited
GB1168769A
Cited
FR2074983A5
Cited
US4104076A
Cited
GB1331492A
Cited
US4190452A
Cited
US4339541A
Cited
JPS57106537A
Cited
GB2162835A
Cited
US4866010A
Cited
US4792536A
Cited
US5023210A
Cited
US5352640A
Cited
US5077133A
Cited
US5030593A
Cited
US5240886A
Cited
US5393593A
Cited
EP0482535B1
Cited
US5344798A
Cited
US5264400A
Cited
US5214008A
Cited
US5278108A
Cited
US5372977A
Cited
US5411922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-13 | 2000-02-12 | 2000-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-13 | 2004-02-12 | 2004-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-13 | 2008-02-12 | 2008-08-13 | $7700.00 | Window Closed / Lapsed |