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US3779781A
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Copper aluminosilicate glass compositions
Assignee: OI Glass Inc
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Filing: 1970-11-12
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Granted: 1973-12-18
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Expires: 1990-11-12
Abstract
Abstract Copper aluminosilicate glass compositions are disclosed possessing desirable properties including low coefficients of thermal expansion, relatively low melting temperatures, good resistance to thermal shock, good characteristics and good chemical durability. The glass compositions are based on the copper aluminosilicate glass system containing as the essential ingredients from 1.5 to 35 mole percent copper oxide, together with from 0.5 to 30 mole percent alumina and 50 to 94 mole percent silica. The remaining balance consists of other compatible ingredients used in glass making. Ternary compositions of copper oxide, alumina and silica contain at least 60 mole percent silica.
Inventors
- 👤 E A Baak N Tryggve
- 👤 C Rapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:21
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/11; C03C3/112; C03C3/083
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
31 words
A ternary copper glass composition as defined in claim 1, having a coefficient of linear thermal expansion of not more than about 10 X 10 7 per * C. (0*-300* C.).
Claim 2
Dependent Claim
28 words
A ternary copper glass composition, as defined in claim 1, wherein the sum of SiO2 + Cu2O + CuO (expressed as Cu2O) is at least 70 mole percent.
Claim 3
Dependent Claim
38 words
A ternary copper glass composition, as defined in claim 1, wherein the SiO2 is not more than 90 mole percent and the sum of Cu2O + CuO (expressed as Cu2O) + Al2O3 is at least 10 mole percent.
Claim 4
Dependent Claim
38 words
A ternary copper glass composition, as defined in claim 1, wherein the Al2O3 is not more than 20 mole percent and the sum of SiO2 + Cu2O + CuO (expressed as Cu2O) is at least 80 mole percent.
Claim 5
Dependent Claim
26 words
A ternary copper glass composition, as defined in claim 1, wherein the mole ratio of Cu2O + CuO (expressed as Cu2O):Al2O3 ranges from 0.9:1 to 2:1.
Claim 6
Dependent Claim
73 words
A ternary copper glass composition, as defined in claim 1, consisting essentially of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 75 Al2O3 12.5 Cu2O + CuO 12.5 (expressed as Cu2O Cu2O 0-12.5 CuO 0-12.5 (expressed as Cu2O) said copper glass composition having a coefficient of linear thermal expansion of not more than about 10 X 10 7 per * C. (0*-300* C.).
Claim 7
Dependent Claim
65 words
A ternary copper glass composition, as defined in claim 1, consisting essentially of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 77.5 Al2O3 10 Cu2O + CuO 12.5 (expressed as Cu2O) said glass composition having a coefficient of linear thermal expansion of not more than about 10 X 10 7 per * C. (0*-300* C.).
Claim 8
Dependent Claim
66 words
A ternary copper glass composition, as defined in claim 1, consisting essentially of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 80 Al2O3 7.5 Cu2O + CuO 12.5 (expressed as Cu2O) said glass composition having a coefficient of linear thermal expansion of not more than about 10 X 10 7 per * C. (0*-300 * C.).
Claim 9
Dependent Claim
76 words
A copper aluminosilicate glass composition consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole percent SiO2 60-90 Al2O3 0.5-30 Cu2O + CuO 1.5-35 (expressed as Cu2O) Cu2O 0-35 CuO 0-35 (expressed as Cu2O) wherein the sum of SiO2 + Cu2O+ CuO (expressed as Cu2O) is at least 70 mole percent and the sum of Cu2O + CuO (expressed as Cu2O)+ Al2O3 is at least 10 mole percent.
Claim 10
Dependent Claim
28 words
A copper aluminosilicate glass composition, as defined in claim 10, wherein the mole ratio of Cu2O + CuO (expressed as Cu2O) : Al2O3 ranges from 0.9:1 to 2:1.
Claim 11
Dependent Claim
81 words
A copper glass composition having desirable low melting characteristics and consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 50-94 Al2O3 0.5-29.5 Cu2O + CuO 1.5-35 (expressed as Cu2O) Cu2O 0-35 CuO (expressed as 0-35 Cu2O) TiO2 0-11 B2O3 0-12.5 wherein the sum of TiO2 + B2O3 is at least 0.5 mole percent, the sum of SiO2 + Cu2O + CuO (expressed as Cu2O) is at least 70 mole percent.
Claim 12
Dependent Claim
27 words
A copper glass composition, as defined in claim 12, wherein the sum of Cu2O + CuO (expressed as Cu2O) + Al2O3 is at least 5 mole percent.
Claim 13
Dependent Claim
49 words
A copper glass composition, as defined in claim 12, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 72-92 Al2O3 0.5-12.5 Cu2O CuO 1.5-12.5 (expressed as Cu2O) Cu2O 0-12.5 CuO (expressed 0-12.5 as Cu2O) TiO2 0-11 B2O3 0-12.5
Claim 14
Dependent Claim
50 words
A copper glass composition, as defined in claim 12, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 72-86 Al2O3 0.5-12.5 Cu2O + CuO 1.5-12.5 (expressed as Cu2O) Cu2O 0-12.5 CuO (expressed 0-12.5 as Cu2O) TiO2 1-8 B2O3 0.5-6.5
Claim 15
Dependent Claim
48 words
A copper glass composition, as defined in claim 12, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 74-86 Al2O3 2.5-12.5 Cu2O + CuO 3-12.5 (expressed as Cu2O) Cu2O 0-12.5 CuO (expressed 0-12.5 as Cu2O) B2O3 0.5-12.5
Claim 16
Dependent Claim
63 words
A copper glass, as defined in claim 12, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 75 Al2O3 10 B2O3 2.5 Cu2O + CuO 12.5 (expressed as Cu2O) said glass having a coefficient of linear thermal expansion of not more than about 10 X 10 7 per * C. (0*-300* C.).
Claim 17
Dependent Claim
37 words
A copper glass composition, as defined in claim 12, wherein the Al2O3 is not more than 19.5 mole percent and the sum of SiO2 + Cu2O + CuO (expressed as Cu2O) is at least 80 mole percent.
Claim 18
Dependent Claim
27 words
A copper glass composition, as defined in claim 18, wherein the sum of Cu2O + CuO (expressed as Cu2O) + Al2O3 is at least 5 mole percent.
Claim 19
Dependent Claim
48 words
A copper glass composition, as defined in claim 12, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 72-90 Al2O3 2.5-12.5 Cu2O + CuO 3-12.5 (expressed as Cu2O) Cu2O 0-12.5 CuO (expressed 0-12.5 as Cu2O) TiO2 1-10.1
Claim 20
Dependent Claim
48 words
A copper glass composition, as defined in claim 20, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 74.5-88 Al2O3 2.5-10 Cu2O + CuO 7.5-12.5 (expressed as Cu2O) Cu2O 0-12.5 CuO (expressed 0-12.5 as Cu2O) TiO2 1-6
Claim 21
Dependent Claim
108 words
A copper glass composition consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 50-94 A1203 0.5-29.5 Cu2O + CuO 1.5-35 (expressed as Cu2O) Cu20 0-35 Cu0 (expressed as Cu20) 0-35 wherein the sum of Si02 + Cu20 + CuO (expressed as Cu2O) is at least 70 mole percent together with at least one of the following components present in more than a trace amount in the indicated mole percent amounts based on the total composition: Component Mole Percent NiO 0-2.5 Iron oxide expressed as 2O3 0-6 TiO2 0-11 B2O3 0-12.5 CoO 0-6 Fluoride expressed as 0-6.5 AlF3
Claim 22
Dependent Claim
35 words
A copper glass composition, as defined in claim 22, wherein said copper glass composition possesses a coefficient of linear thermal expansion of not more than about 10 X 10 7 per * C. (0*-300* C.).
Claim 23
Dependent Claim
34 words
A copper glass composition, as defined in claim 22, wherein the sum of SiO2+ Cu2O + CuO (expressed as Cu2O) is at least 85 mole percent and the maximum A12O3 is 14.5 mole percent.
Claim 24
Dependent Claim
47 words
A copper glass composition, as defined in claim 22, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 77.5 Al2O3 10 Cu2O + CuO 10 (expressed as Cu2O) Cu2O 0-10 CuO (expressed as 2O) NiO 2.5
Claim 25
Dependent Claim
56 words
A copper glass composition, as defined in claim 22, consistinG of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 73-80 Al2O3 6.5-10 Cu2O + CuO 10-12.5 (expressed as Cu2O) Cu2O 0-12.5 CuO (expressed as Cu2O) 0-12.5 TiO2 1 B2O3 1 Iron oxide expressed as 1-6 Fe2O3
Claim 26
Dependent Claim
52 words
A copper glass composition, as defined in claim 22, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 73-80 Al2O3 6.5-10 Cu2O + CuO (expressed Cu2O) 10-12.5 Cu2O 0-12.5 CuO (expressed as 0-12.5 Cu2O)TiO2 1.5 Iron oxide expressed as 2-6 Fe2O3
Claim 27
Dependent Claim
48 words
A copper glass composition, as defined in claim 22, consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 77.5-84.5 Al2O3 3-10 Cu2O + CuO 6.5-10 (expressed as Cu2O) Cu2O 0-10 Cu0 (expressed as Cu2O) 0-10 Co0 2.5-6
Claim 28
Dependent Claim
80 words
A copper glass composition, as defined in claim 22, having desirable low melting characteristics and consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent Si02 50-94 Al203 0.5-29.5 Cu2O + Cu0 1.5-35 0(expressed as Cu2O) Cu2O 0-35 CuO (expressed as Cu2O) 0-35 Fluoride expressed more than a trace-as AlF3 up to 6.5 wherein the sum of SiO2 + Cu2O + CuO (expressed as Cu2O) is at least 70 mole percent.
Claim 29
Dependent Claim
57 words
A copper glass composition, as defined in claim 29, having desirable low melting characteristics and consisting of the following components in the indicated mole percent amounts based on the total composition: Component Mole Percent SiO2 77 Al2O3 9.25 Cu2O + CuO 12.45 (expressed as Cu2O) Cu2O 0-12.45 CuO (expressed as Cu2O) 0-12.45 Fluoride expressed 1.3 as AlF3
Claim 30
Dependent Claim
94 words
A copper glass composition, as defined in claim 22, consisting of compatible glass forming constituents in the following range of mole percents: Constituents Mole Percent SiO2 50-94 Al2O3 0.5-19.5 Cu2O + CuO 1.5-35 (expressed as Cu2O) Cu2O 0-35 CuO (expressed as 0-35 Cu2O) and at least 0.5 mole percent of the following constituents in the indicated mole percent: TiO2 0-11 B2O3 0-12.5 Fluoride expressed as 0-6.5 AlF3Iron oxide expressed as 0-6Fe2O3 CoO 0-6 NiO 0-2.5 the total mole percent of SiO2 + Cu2O + CuO (expressed as Cu2O) is at least 80 mole percent.
Claim 31
Dependent Claim
38 words
A copper glass composition, as defined in claim 31, wherein the total mole percent of SiO2 + Cu2O + CuO (expressed as Cu2O) is at least 85 mole percent and the total Al2O3 is no more than 14.5%.
Claim 32
Dependent Claim
48 words
A copper glass composition, as defined in claim 31, wherein the mole percent ranges of SiO2, Al2O3 and Cu2O + CuO (expressed as Cu2O) are respectively in the following indicated ranges of mole percent: Constituents Mole Percent SiO2 73-80 Al2O3 6.5-10 Cu2O + CuO (expressed 10-12.5 as Cu2O)
Claim 33
Dependent Claim
94 words
A copper glass composition as defined in claim 22, consisting of compatible glass forming constituents in the following range of mole percents: Constituents Mole Percent SiO2 50-94 Al2O3 0.5-29.5 Cu2O + CuO (expressed 1.5-35as Cu2O) Cu2O 0-35 CuO (expressed as 0-35Cu2O) TiO2 0-2 B2O3 0-2.5 AlF3 0-6.5 Fe2O3 0-6 CoO 0-6 NiO 0-2.5 wherein the sum of SiO2 + Cu2O is at least 70 mole percent and the sum of TiO2 + B2O3 + fluoride expressed as AlF3 + iron oxide expressed as Fe2O3 + CoO + NiO is at least 0.5 mole percent.
Claim 34
Dependent Claim
74 words
A copper glass composition as defined in claim 22, consisting of the following components in the indicated mole percent amount based on the total composition: Component Mole Percent SiO2 75 Al2O3 10 Cu2O + CuO 12.5 (expressed as Cu2O) Cu2O 0-12.5 CuO (expressed as 0-12.5Cu2O) Iron oxide expressed as 2.5 Fe2O3 said glass having a coefficient of linear thermal expansion of not more than about 10 X 10 7 per * C. (0*-300* C.).
Claim 35
Dependent Claim
69 words
In an astronomical mirror telescope a shaped body of glass providing enhanced optical resolution for visual telescope observations, said glass consisting of a homogeneous solid body of oxides of the following compatible glass forming constituents in the indicated range of mole percent: Constituent Oxides Mole Percent Copper (expressed as 1.5-35Cu2O) Aluminum 0.5-30 Silicon 50-94 said oxides of copper and silicon constituting at least 70 mole percent of said glass.
Claim 36
Dependent Claim
72 words
A glass mirror for an astronomical telescope consisting of a shaped body of glass consisting of oxides of copper, aluminum and silicon in the following range of mole percent; Constituent Oxides Mole Percent Copper (expressed as 1.5-35Cu2O) Aluminum 0.5-30 Silicon 50-94 said glass mirror possessing a coefficient of linear thermal expansion over the range of from 0* C. to 300* C. of not greater than 10 X 10 7 per * C.
Claim 37
Dependent Claim
79 words
A copper aluminosilicate glass composition consisting of the oxides of copper, aluminum and silicon in the following minimum amounts: Constituent Oxides Minimum Mole Percent Copper (expressed At least 1.5as Cu2O) Aluminum At least 0.5 Silicon At least 60 and wherein the sum of the oxides of copper expressed as Cu2O and of silicon totals at least 70 mole percent and the sum of the oxides of copper expressed as Cu2O and of aluminum totals at least 5 mole percent.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |