US5318931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass panes for vehicles
Assignee: Nippon Sheet Glass Co Ltd
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Filing: 1992-02-07
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Granted: 1994-06-07
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Expires: 2012-02-07
Abstract
Abstract Glass for vehicles comprising from 65 to 80% by weight of SiO 2 , from 0 to 5% by weight of Al 2 O 3 , from 0 to 5% by weight B 2 O 3 , from 0 to 10% by weight of MgO, from 5 to 15% by weight of CaO, from 10 to 18% by weight of Na 2 O, from 0 to 5% by weight of K 2 O, from 5 to 15% by weight in total of MgO and CaO, from 10 to 20% by weight in total of Na 2 O and K 2 O, from 0.1 to 1% by weight of cerium oxide in terms of CeO 2 , from 0.2 to 0.6% by weight of iron oxide in terms of Fe 2 O 3 , from 0 to 0.005% by weight of CoO, from 0 to 0.01% by weight of NiO, and from 0.0005 to 0.005% by weight of Se, and glass for vehicles comprising from 65 to 80% by weight of SiO 2 , from 0 to 5% by weight of Al 2 O 3 , from 0 to 5% by weight of B 2 O 3 , from to 10% by weight of MgO, from 5 to 15% by weight of CaO, from 10 to 18% by weight of Na 2 O, from 0 to 5% by weight of K 2 O, from 5 to 15% by weight in total of MgO and CaO, from 10 to 18% by weight in total of Na 2 O and K 2 O, from 0.1 to 1% by weight of cerium oxide in terms of CeO 2 , from 0 to 1% by weight of TiO 2 , from 0.2 to 0.6% by weight of iron oxide in terms of Fe 2 O 3 , from 0 to 0.005% by weight of CoO, from 0 to 0.01% by weight of NiO, and from 0.0005 to 0.005% by weight of Se. The glass is gray-tinted while exhibiting excellent ultraviolet and heat absorption.
Inventors
- 👤 Kunio Nakaguchi
- 👤 Yoshikazu Toshikiyo
- 👤 Takashi Sunada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:01
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/08; C03C4/085; C03C3/00; C03C3/04; C03C3/076; C03C3/095; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904; Y10S501/905
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
178 words
Glass for vehicles consisting essentially of: from 65 to 80% by weight of SiO 2 ; from 0 to 5% by weight of Al 2 O 3 ; from 0 to 5% by weight of B 2 O 3 ; from 0 to 10% by weight of MgO; from 5 to 15% by weight of CaO; from 10 to 18% by weight of Na 2 O; from 0 to 5% by K 2 O; from 5 to 15% by weight in total of MgO and CaO; from 10 to 20% by weight in total of Na 2 O and K 2 O; from 0.1 to 1% by weight of cerium oxide in terms of CeO 2 ; from 0.2 to 0.6% by weight of iron oxide in terms of Fe 2 O 3 , wherein iron oxide includes both FeO and Fe 2 O 3 ; 0% by weight of CoO; 0% by weight of NiO; and from 0.0005 to 0.005% by weight of Se, wherein said glass has an excitation purity P e of 7.6% or more.
Claim 2
Dependent Claim
178 words
Glass for vehicles consisting essentially of: from 65 to 80% by weight of SiO 2 ; from 0 to 5% by weight of Al 2 O 3 ; from 0 to 5% by weight of B 2 O 3 ; from 0 to 10% by weight of MgO; from 5 to 15% by weight of CaO; from 10 to 18% by weight of Na 2 O; from 0 to 5% by K 2 O; from 5 to 15% by weight in total of MgO and CaO; from 10 to 20% by weight in total of Na 2 O and K 2 O; from 0.1 to 1% by weight of cerium oxide in terms of CeO 2 ; from 0.2 to 0.6% by weight of iron oxide in terms of Fe 2 O 3 , wherein iron oxide includes both FeO and Fe 2 O 3 ; 0% by weight of CoO; 0% by weight of NiO; and from 0.0005 to 0.005% by weight of Se, wherein said glass has an excitation purity P e of 7.6% or more.
Claim 3
Dependent Claim
26 words
Glass for vehicles as claimed in claim 1, wherein the proportion of FeO is from 23 to 35% by weight based on the total iron oxide.
Claim 4
Dependent Claim
47 words
Glass for vehicles as claimed in claim 1, wherein the glass with a thickness of 4 mm has a visible light transmission of at least 70% with the CIE standard illuminant A and a dominant wavelength of 570 nm or longer with the CIE standard illuminant C.
Claim 5
Dependent Claim
42 words
Glass for vehicles as claimed in claim 3, wherein the glass with a thickness of 4 mm has a solar radiation transmission of not more than 60% and a light transmission of not more than 10% at a wavelength of 350 nm.
Claim 6
Dependent Claim
188 words
Glass for vehicles consisting essentially of: from 65 to 80% by weight of SiO 2 ; from 0 to 5% by weight of Al 2 O 3 ; from 0 to 5% by weight of B 2 O 3 ; from 0 to 10% by weight of MgO; from 5 to 15% by weight of CaO; from 10 to 18% by weight of Na 2 O; from 0 to 5% by K 2 O; from 5 to 15% by weight in total of MgO and CaO; from 10 to 18% by weight in total of Na 2 O and K 2 O; from 0.1 to 1% by weight of cerium oxide in terms of CeO 2 ; from 0 to 1% by weight of TiO 2 ; from 0.2 to 0.6% by weight of iron oxide in terms of Fe 2 O 3 , wherein iron oxide includes both FeO and Fe 2 O 3 ; 0% by weight of CoO; 0% by weight of NiO; and from 0.0005 to 0.005% by weight of Se, wherein said glass has an excitation purity P e of 7.6% or more.
Claim 7
Dependent Claim
188 words
Glass for vehicles consisting essentially of: from 65 to 80% by weight of SiO 2 ; from 0 to 5% by weight of Al 2 O 3 ; from 0 to 5% by weight of B 2 O 3 ; from 0 to 10% by weight of MgO; from 5 to 15% by weight of CaO; from 10 to 18% by weight of Na 2 O; from 0 to 5% by K 2 O; from 5 to 15% by weight in total of MgO and CaO; from 10 to 18% by weight in total of Na 2 O and K 2 O; from 0.1 to 1% by weight of cerium oxide in terms of CeO 2 ; from 0 to 1% by weight of TiO 2 ; from 0.2 to 0.6% by weight of iron oxide in terms of Fe 2 O 3 , wherein iron oxide includes both FeO and Fe 2 O 3 ; 0% by weight of CoO; 0% by weight of NiO; and from 0.0005 to 0.005% by weight of Se, wherein said glass has an excitation purity P e of 7.6% or more.
Claim 8
Dependent Claim
26 words
Glass for vehicles as claimed in claim 5, wherein the proportion of FeO is from 23 to 35% by weight based on the total iron oxide.
Claim 9
Dependent Claim
47 words
Glass for vehicles as claimed in claim 5, wherein the glass with a thickness of 4 mm has a visible light transmission of at least 70% with the CIE standard illuminant A and a dominant wavelength of 570 nm or longer with the CIE standard illuminant C.
Claim 10
Dependent Claim
42 words
Glass for vehicles as claimed in claim 7, wherein the glass with a thickness of 4 mm has a solar radiation transmission of not more than 60% and a light transmission of not more than 10% at a wavelength of 350 nm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-06 | 2005-12-06 | 2006-06-07 | $7700.00 | Window Closed / Lapsed |