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US4336303A
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Integral vitreous article composed of opaque and transparent portions
Assignee: Corning Glass Works
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Filing: 1979-12-13
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Granted: 1982-06-22
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Expires: 1999-12-13
Abstract
Abstract There is disclosed an integral vitreous article composed of an opaque portion encased within a thin surface layer of transparent, colored glass. The article has a uniform chemical composition of an alkaline aluminosilicate nature, the opaque portion contains light scattering particles of a titaniferous nature, and the surface layer contains a titania coupled colorant. The article may be produced by simultaneously forming an article and quenching its surface whereby differential heat extraction produces the transparent surface layer.
Inventors
- 👤 Hermann L. Rittler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:41
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/089; C03C3/091; C03B; C03B11/00; C03B11/06; C03B11/12; C03C17/00; C03C17/02; C03C3/083; C03C4/00; C03C4/005; C03C4/02; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
An integral vitreous article composed of an opaque portion encased within a thin, continuous, unbroken surface layer of transparent colored glass, the vitreous article having a uniform elemental composition throughout its mass consisting essentially of at least one alkali metal oxide and/or alkaline earth metal oxide, Al 2 O 3 , SiO 2 , TiO 2 , and, as a titania color coupler, A TiO 2 -coupling agent selected from the group of a noble metal, a metal oxide other than an element from Groups I and II of the Periodic Table, and mixtures thereof, the opaque portion containing light scattering particles of a titaniferous nature.
Claim 2
Dependent Claim
106 words
An integral vitreous article composed of an opaque portion encased within a thin, continuous, unbroken surface layer of transparent colored glass, the vitreous article having a uniform elemental composition throughout its mass consisting essentially of at least one alkali metal oxide and/or alkaline earth metal oxide, Al 2 O 3 , SiO 2 , TiO 2 , and, as a titania color coupler, A TiO 2 -coupling agent selected from the group of a noble metal, a metal oxide other than an element from Groups I and II of the Periodic Table, and mixtures thereof, the opaque portion containing light scattering particles of a titaniferous nature.
Claim 3
Dependent Claim
65 words
A vitreous article in accordance with claim 1 wherein the composition, calculated from the glass batch on an oxide basis in weight percent, consists essentially of 40-65% SiO 2 , 10-30% TiO 2 , 3-20% Al 2 O 3 , up to 5% of said TiO 2 -coupling agent, and up to 20% of at least one alkali metal oxide and/or alkaline earth metal oxide.
Claim 4
Dependent Claim
21 words
A vitreous article in accordance with claim 2 wherein the composition additionally contains up to 10% B 2 O 3 .
Claim 5
Dependent Claim
28 words
A vitreous article in accordance with claim 2 wherein the composition additionally contains up to 5% ZrO 2 , the total TiO 2 plus ZrO 2 being 15-30%.
Claim 6
Dependent Claim
29 words
A vitreous article in accordance with claim 2 wherein the composition is in the nepheline system and contains up to 20% Na 2 O as the alkali metal oxide.
Claim 7
Dependent Claim
56 words
A vitreous article in accordance with claim 2 wherein the composition is composed essentially of 49-61% SiO 2 , 8-15% Al 2 O 3 , 2-10% Na 2 O, 1-25% TiO 2 , 8-10% of at least one alkali metal oxide and/or alkaline earth metal oxide, and up to 5% of said TiO 2 -coupling agent.
Claim 8
Dependent Claim
38 words
A vitreous article in accordance with claim 6 composed of 49% SiO 2 , 10% Al 2 O 3 , 25% TiO 2 , 10% Na 2 O, 1% As 2 O 5 and 5% ZrO 2 .
Claim 9
Dependent Claim
17 words
A vitreous article in accordance with claim 1 wherein the opaque portion is opacified by titaniferous particles.
Claim 10
Dependent Claim
18 words
A vitreous article in accordance with claim 8 wherein the opaque portion is a glass containing opacifying particles.
Claim 11
Dependent Claim
18 words
A vitreous article in accordance with claim 8 wherein the opaque portion is a instant glass-ceramic containing crystals.
Claim 12
Dependent Claim
20 words
A vitreous article in accordance with claim 1 wherein the transparent glass surface layer is not over ten mils thick.
Claim 13
Dependent Claim
22 words
A vitreous article in accordance with claim 11 wherein the transparent glass surface layer is on the order of five mils thick.
Claim 14
Dependent Claim
41 words
A vitreous article in accordance with claim 1 wherein the titania is color coupled to a metal oxide selected from the group of arsenic, vanadium, cerium, niobium, molybdenum, tungsten, manganese, iron, cobalt, nickel, chromium, copper, cadmium, selenium, tellurium, neodymium, and praeseodymium.
Claim 15
Dependent Claim
14 words
A vitreous article in accordance with claim 1 wherein the noble metal is silver.
References Cited (Backward Citations)
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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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |