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US4258984A
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Iridium oxide based electrochromic devices
Assignee: AT&T Inc
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Filing: 1979-09-14
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Granted: 1981-03-31
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Expires: 1999-09-14
Abstract
Abstract Electrochromic devices based on electrochromic iridium oxide electrodes are disclosed. These electrodes are iridium oxide entities produced by vacuum deposition techniques such as by sputtering from an iridium target in the presence of an oxygen atmosphere. All solid state electrochromic devices utilizing such electrodes are possible.
Inventors
- 👤 Gerardo Beni
- 👤 William C. Dautremont-Smith
- 👤 Lawrence M. Schiavone
- 👤 Joseph L. Shay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:20
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1525; G02F1/1524; G02F1/15245
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
A device comprising an electrochromic electrode and a counterelectrode in intimate contact with an electrolyte characterized in that said electrochromic electrode comprises a vacuum deposited iridium oxide film.
Claim 2
Independent Claim
28 words
A device comprising an electrochromic electrode and a counterelectrode in intimate contact with an electrolyte characterized in that said electrochromic electrode comprises a vacuum deposited iridium oxide film.
Claim 3
Dependent Claim
16 words
The device of claim 1 wherein said iridium oxide film is deposited on a conducting substrate.
Claim 4
Dependent Claim
11 words
The device of claim 2 wherein said conducting substrate comprises tantalum.
Claim 5
Dependent Claim
13 words
The device of claim 2 wherein said conducting substrate comprises indium tin oxide.
Claim 6
Dependent Claim
12 words
The device of claim 2 wherein said conducting substrate is said electrolyte.
Claim 7
Dependent Claim
12 words
The device of claim 1 wherein said electrolyte comprises perfluorosulfonic acid resin.
Claim 8
Dependent Claim
10 words
The device of claim 6 wherein said electrolyte is opacified.
Claim 9
Dependent Claim
15 words
The device of claim 1 wherein said iridium oxide film is a sputtered deposited film.
Claim 10
Dependent Claim
20 words
The device of claim 1 wherein said vacuum deposition is done in an environment comprising oxygen and an inert gas.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |