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US4713359A
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Infrared absorbing glass compositions
Assignee: Pilkington North America Inc
•
Filing: 1986-04-14
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Granted: 1987-12-15
•
Expires: 2006-04-14
Abstract
Abstract A soda-lime-silica glass composition containing P 2 O 5 for forming glass articles, the composition absorbing infrared radiation and having an Illuminant A (red end and blue end of the spectrum) transmittance of about 70 percent or more.
Inventors
- 👤 Daniel P. Lubelski
- 👤 Rodney G. Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:50
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/097; C03C4/00; C03C4/08; C03C4/082; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
51 words
A glass composition comprising the following ingredients in approximate percent by weight: ______________________________________
Ingredients Percent by Weight
______________________________________
SiO.sub.2 60-80
Na.sub.2 O 10-20
K.sub.2 O 0-10
CaO 5-16
MgO 0-10
Al.sub.2 O.sub.3
0-5
TiO.sub.2 0-0.5
SO.sub.3.sup.--
0-0.5
Fe.sub.2 O.sub.3
0.3-0.86
SnO.sub.2 0.5-2.0
P.sub.2 O.sub.5
0.01-1
______________________________________ the composition absorbing infrared rays.
Claim 2
Dependent Claim
51 words
A glass composition comprising the following ingredients in approximate percent by weight: ______________________________________
Ingredients Percent by Weight
______________________________________
SiO.sub.2 60-80
Na.sub.2 O 10-20
K.sub.2 O 0-10
CaO 5-16
MgO 0-10
Al.sub.2 O.sub.3
0-5
TiO.sub.2 0-0.5
SO.sub.3.sup.--
0-0.5
Fe.sub.2 O.sub.3
0.3-0.86
SnO.sub.2 0.5-2.0
P.sub.2 O.sub.5
0.01-1
______________________________________ the composition absorbing infrared rays.
Claim 3
Dependent Claim
42 words
A glass composition as defined in claim 1, in which Fe 2 O 3 is about 0.3 to 0.4 weight percent, SnO 2 is about 0.5 to 1.0 weight percent, and P 2 O 5 is about 0.01 to 0.3 weight percent.
Claim 4
Dependent Claim
22 words
A glass composition as defined in claim 1, in which the P 2 O 5 is about 0.02 to 0.2 weight percent.
Claim 5
Dependent Claim
22 words
A glass composition as defined in claim 1, in which the P 2 O 5 is about 0.05 to 0.1 weight percent.
Claim 6
Dependent Claim
58 words
A glass composition for making a glass article, the composition comprising the following ingredients in approximate percent by weight: ______________________________________
Ingredients Percent by Weight
______________________________________
SiO.sub.2 68-74
Na.sub.2 O 11-14
K.sub.2 O 0-1
CaO 6-13
MgO 1.5-4
Al.sub.2 O.sub.3
0-3.5
TiO.sub.2 0-0.5
SO.sub.3.sup.--
0-0.5
Fe.sub.2 O.sub.3
0.3-0.4
SnO.sub.2 0.5-1.0
P.sub.2 O.sub.5
0.01-0.3
______________________________________ the glass absorbing infrared rays.
Claim 7
Dependent Claim
58 words
A glass composition for making a glass article, the composition comprising the following ingredients in approximate percent by weight: ______________________________________
Ingredients Percent by Weight
______________________________________
SiO.sub.2 68-74
Na.sub.2 O 11-14
K.sub.2 O 0-1
CaO 6-13
MgO 1.5-4
Al.sub.2 O.sub.3
0-3.5
TiO.sub.2 0-0.5
SO.sub.3.sup.--
0-0.5
Fe.sub.2 O.sub.3
0.3-0.4
SnO.sub.2 0.5-1.0
P.sub.2 O.sub.5
0.01-0.3
______________________________________ the glass absorbing infrared rays.
Claim 8
Dependent Claim
23 words
An article as defined in claim 5, in which the amount of P 2 O 5 is about 0.2 to 0.8 weight percent.
Claim 9
Dependent Claim
23 words
An article as defined in claim 5, in which the amount of P 2 O 5 is about 0.4 to 0.6 weight percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |