Patent US6395659B2 successfully refreshed from Google Patents.
US6395659B2
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Ultraviolet/infrared absorbent glass
Assignee: Nippon Sheet Glass Co Ltd
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Filing: 2001-06-07
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Granted: 2002-05-28
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Expires: 2021-06-07
Abstract
Abstract The ultraviolet/infrared transmittance glass consists of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % B2O3; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O; 5 to 15 wt. % total amount of MgO and CaO; and 0 to 20 wt. % total amount of Na2O and K2O, colorants including: equal to or more than 0.05 wt. % and less than 0.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.63 to 1.4 wt. % CeO2; 0.02 to 1.5 wt. % TiO2; 0.0005 to 0.005 wt. % CoO; and 0.0003 to 0.002 wt. % Se. FeO expressed as Fe2O3 is between 30 wt. % and 60 wt. % of T-Fe2O3.
Inventors
- 👤 Hiromitsu Seto
- 👤 Koichi Sakaguchi
- 👤 Shigeki Nakagaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:58
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/02; C03C3/00; C03C3/04; C03C3/076; C03C3/095; C03C4/08; C03C4/082; C03C4/085
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
180 words
An ultraviolet/infrared absorbent glass consisting of base glass and colorants, said base glass comprising: 65 to 80 wt. % SiO 2 ; 0 to 5 wt. % B 2 O 3 ; 0 to 5 wt. % Al 2 O 3 ; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO; 10 to 18 wt. % Na 2 O; 0 to 5 wt. % K 2 O; 5 to 15 wt. % total amount of MgO and CaO; and 10 to 20 wt. % total amount of Na 2 O and K 2 O, said colorants comprising: equal to or more than 0.05 wt. % and less than 0.19 wt. % total iron oxide (T—Fe 2 O 3 ) expressed as Fe 2 O 3 ; 0.63 to 1.4 wt. % CeO 2 ; 0.02 to 1.5 wt. % TiO 2 ; 0.0005 to 0.005 wt. % CoO; and 0.0003 to 0.002 wt. % Se, FeO expressed as Fe 2 O 3 being between 31.1 wt. % and 60 wt. % of T—Fe 2 O 3 .
Claim 2
Dependent Claim
180 words
An ultraviolet/infrared absorbent glass consisting of base glass and colorants, said base glass comprising: 65 to 80 wt. % SiO 2 ; 0 to 5 wt. % B 2 O 3 ; 0 to 5 wt. % Al 2 O 3 ; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO; 10 to 18 wt. % Na 2 O; 0 to 5 wt. % K 2 O; 5 to 15 wt. % total amount of MgO and CaO; and 10 to 20 wt. % total amount of Na 2 O and K 2 O, said colorants comprising: equal to or more than 0.05 wt. % and less than 0.19 wt. % total iron oxide (T—Fe 2 O 3 ) expressed as Fe 2 O 3 ; 0.63 to 1.4 wt. % CeO 2 ; 0.02 to 1.5 wt. % TiO 2 ; 0.0005 to 0.005 wt. % CoO; and 0.0003 to 0.002 wt. % Se, FeO expressed as Fe 2 O 3 being between 31.1 wt. % and 60 wt. % of T—Fe 2 O 3 .
Claim 3
Dependent Claim
68 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein the glass at any thickness in a range of 2.6 to 6.3 mm has a visible light transmittance of equal to or more than 65% when measured by using CIE illuminant A, a solar energy transmittance of equal to or less than 65%, and an ultraviolet transmittance specified by ISO of equal to or less than 20%.
Claim 4
Dependent Claim
65 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein the glass at any thickness in a range of 2.6 to 6.3 mm has a bronze color shade having an excitation purity of equal to or less than 10% when measured by using CIE illuminant C, and a chromaticity expressed as a* and b* by using L*a*b* coordinates in ranges of −2≦a*≦1 and 4≦b*≦10.
Claim 5
Dependent Claim
65 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein the glass at any thickness in a range of 2.6 to 6.3 mm has a gray color shade having an excitation purity of equal to or less than 5% when measured by using CIE illuminant C, and a chromaticity expressed as a* and b* by using L*a*b* coordinates in ranges of −2≦a*≦1 and −1≦b*≦4.
Claim 6
Dependent Claim
25 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein the glass further comprises NiO in a range of 0.001 to 0.01 wt. %.
Claim 7
Dependent Claim
28 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein the glass further comprises La 2 O 3 in a range of 0.01 to 1 wt. %.
Claim 8
Dependent Claim
27 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein the glass comprises Al 2 O 3 in a range of 0.1 to 2 wt. %.
Claim 9
Dependent Claim
44 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein the glass further comprises at least one selected from a group consisting of ZnO, MnO, V 2 O 5 , MoO 3 and SnO in a range of 0 to 1 wt. %.
Claim 10
Dependent Claim
33 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein said total iron oxide (T—Fe 2 O 3 ) expressed as Fe 2 O 3 , is less than 0.18 wt %.
Claim 11
Dependent Claim
34 words
An ultraviolet/infrared absorbent glass a s claimed in claim 1 , wherein said total iron oxide (T—Fe 2 O 3 ) expressed as Fe 2 O 3 , is less than 0.15 wt %.
Claim 12
Dependent Claim
34 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein said FeO expressed as Fe 2 O 3 is between 41 wt. % and 60 wt. % of T—Fe 2 O 3 .
Claim 13
Dependent Claim
71 words
An ultraviolet/infrared absorbent glass as claimed in claim 1 , wherein said base glass consists essentially of said SiO 2 , B 2 O 3 , Al 2 O 3 , MgO, CaO, Na 2 O and K 2 O; and said colorants consist essentially of said total iron oxide (T—Fe 2 O 3 ) expressed as Fe 2 O 3 , CeO 2 , TiO 2 , CoO and Se.
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| 3.5 Years (Year 4) | 2005-05-27 | 2005-11-26 | 2006-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-05-27 | 2009-11-26 | 2010-05-28 | $3760.00 | Window Closed / Lapsed |
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