US4510190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent, heat-insulating coating for a transparent substrate
Assignee: Interpane Entwicklungs und Beratungs GmbH and Co KG
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Filing: 1983-03-24
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Granted: 1985-04-09
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Expires: 2003-03-24
Abstract
Abstract A transparent, heat-insulating coating, neutrally acting in transparency and external appearance, for transparent substrates, more particularly for insulating glass panes, is disclosed. The coating is formed from a bismuth oxide-silver-bismuth oxide multilayer system in which a more electronegative substance, i.e. a substance with a higher normal potential, is added to the bismuth oxide layers to avoid blackening under UV radiation. If manganese is used as the electronegative substance, its oxidation to higher valency states can be prevented by the addition of trivalent substances. The layers may be applied in a conventional way by diode-cathode atomization.
Inventors
- 👤 Hans J. Glaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:51
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3613; C03C17/3644; C03C17/3657; C03C17/366; C03C17/3681; E; E06; E06B; E06B3/00; E06B3/66; E06B3/67; E06B3/6715; C03C2217/00; C03C2217/70; C03C2217/73
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
39 words
A transparent, heat-insulating coating for a transparent substrate, the heat-insulating coating consisting essentially of a bismuth oxide-silver-bismuth oxide multilayer system wherein said bismuth oxide layers incorporate at least one substance which is more electronegative than bismuth or bismuth oxide.
Claim 2
Dependent Claim
39 words
A transparent, heat-insulating coating for a transparent substrate, the heat-insulating coating consisting essentially of a bismuth oxide-silver-bismuth oxide multilayer system wherein said bismuth oxide layers incorporate at least one substance which is more electronegative than bismuth or bismuth oxide.
Claim 3
Dependent Claim
30 words
A coating according to claim 1, wherein the bismuth oxide layer adjacent to the transparent substrate has a thickness in the range of from about 15 to about 40 nm.
Claim 4
Dependent Claim
23 words
A coating according to claim 1, wherein the silver layer has a thickness in the range from about 10 to about 200 nm.
Claim 5
Dependent Claim
30 words
A coating according to claim 1, wherein the bismuth oxide layer remote from the transparent substrate has a thickness in the range of from about 10 to about 40 nm.
Claim 6
Dependent Claim
40 words
A sun and heat-insulating panel having two parallel transparent panes spaced apart and a heat-insulating coating according to claim 1, wherein the coating is arranged on one of the two panes facing towards the gap between the two parallel panes.
Claim 7
Dependent Claim
50 words
A sun and heat-insulating panel having two parallel transparent panes spaced apart and having a coating according to claim 1, wherein the heat-insulating coating is applied to a transparent sheet of a plastics material and the sheet with the heat insulating coating thereon is located between the two parallel panes.
Claim 8
Dependent Claim
21 words
A sun and heat-insulating panel according to claim 6, wherein the transparent sheet is stuck onto one of the two panes.
Claim 9
Dependent Claim
22 words
A sun and heat-insulating panel according to claim 6, wherein the transparent sheet is located in the space between the two panes.
Claim 10
Dependent Claim
62 words
A method of producing a coating according to claim 1, which comprises applying to a transparent substrate a first layer comprising a bismuth oxide and a substance more electronegative than bismuth oxide, applying to the first layer a second layer comprising silver, and applying to the second layer a third layer comprising bismuth oxide and a substance more electronegative than bismuth oxide.
Claim 11
Dependent Claim
16 words
A method according to claim 9, wherein each of said layers is applied by diode-cathode atomization.
Claim 12
Dependent Claim
16 words
A coating according to claim 1, wherein the more electronegative substance is more electronegative than bismuth.
Claim 13
Dependent Claim
17 words
A coating according to claim 1, wherein the more electronegative substance is more electronegative than bismuth oxide.
Claim 14
Dependent Claim
60 words
A transparent, heat-insulated coating for a transparent suhstrate, the heat-insulating coating consisting essentially of a bismuth oxide-silver-bismuth oxide multilayer system wherein said bismuth oxide layers incorporate at least one substance which is more electronegative than bismuth or bismuth oxide, said more electronegative substance being selected from the group consisting of indium, iron, nickel, zinc, manganese, magnesium, titanium, cadmium and zircon.
Claim 15
Dependent Claim
60 words
A transparent, heat-insulated coating for a transparent suhstrate, the heat-insulating coating consisting essentially of a bismuth oxide-silver-bismuth oxide multilayer system wherein said bismuth oxide layers incorporate at least one substance which is more electronegative than bismuth or bismuth oxide, said more electronegative substance being selected from the group consisting of indium, iron, nickel, zinc, manganese, magnesium, titanium, cadmium and zircon.
Claim 16
Dependent Claim
26 words
A coating according to claim 13, wherein there is mixed with the bismuth oxide layers from 0.2% to 10% by weight of the more electronegative substance.
Claim 17
Dependent Claim
21 words
A coating according to claim 13, wherein there is mixed with the bismuth oxide layers about 0.6% by weight of manganese.
Claim 18
Dependent Claim
50 words
A coating according to claim 15, wherein, in addition to the manganese, there is added a trivalent substance selected from groups consisting of iron, lanthanum, chromium, cerium and indium, in a quantity such that a spinel configuration is formed, whereby oxidation of the manganese to higher valency states is prevented.
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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |