US4110259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochromic cermet material and device including the same
Assignee: RCA Corp
•
Filing: 1977-06-15
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Granted: 1978-08-29
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Expires: 1997-06-15
Abstract
Abstract An electrochromic display device includes a cermet electrochromic film. The cermet may comprise a conventional electrochromic material, such as tungsten oxide, and a noble metal, such as gold. In a preferred embodiment, the electrochromic cermet material includes a metal content of about 25 atomic percent. The electrochromic cermet is blue as prepared, and, when colored, is red. This electrochromic cermet material can be used in combination with other electrochromic materials, such as tungsten oxide, so as to result in a multicolor electrochromic display.
Inventors
- 👤 Enid K. Sichel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:03
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/12; G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1524
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
27 words
An electrochromic cermet material, which consisting essentially of an electrically insulating electrochromic material, and particles of a noble metal which are greater than about 10A in diameter.
Claim 2
Dependent Claim
27 words
An electrochromic cermet material, which consisting essentially of an electrically insulating electrochromic material, and particles of a noble metal which are greater than about 10A in diameter.
Claim 3
Dependent Claim
18 words
An electrochromic cermet material in accordance with claim 1 in which said electrochromic material comprises WO 3 .
Claim 4
Dependent Claim
16 words
An electrochromic cermet material in accordance with claim 1 in which said noble metal comprises Au.
Claim 5
Dependent Claim
21 words
An electrochromic cermet material in accordance with claim 3 in which said noble metal comprises between 4 to 40 atomic percent.
Claim 6
Dependent Claim
19 words
An electrochromic cermet material in accordance with claim 4 in which said noble metal comprises about 25 atomic percent.
Claim 7
Dependent Claim
16 words
An electrochromic cermet material in accordance with claim 1 in which said noble metal comprises Ag.
Claim 8
Dependent Claim
21 words
An electrochromic cermet material in accordance with claim 6 in which said noble metal comprises between 3 to 17 atomic percent.
Claim 9
Dependent Claim
16 words
An electrochromic cermet material in accordance with claim 1 in which said noble metal comprises Pt.
Claim 10
Dependent Claim
21 words
An electrochromic cermet material in accordance with claim 8 in which said noble metal comprises between up to 40 atomic percent.
Claim 11
Dependent Claim
45 words
An electrochromic device of the type having an electrochromic film and means for coloring said film, wherein said electrochromic material is a cermet which consisting essentially of: an electrically insulating electrochromic material; and particles of a noble metal which are greater than 10A in diameter.
Claim 12
Dependent Claim
45 words
An electrochromic device of the type having an electrochromic film and means for coloring said film, wherein said electrochromic material is a cermet which consisting essentially of: an electrically insulating electrochromic material; and particles of a noble metal which are greater than 10A in diameter.
Claim 13
Dependent Claim
17 words
An electrochromic device in accordance with claim 10 in which said electrochromic material comprises WO 3 .
Claim 14
Dependent Claim
15 words
An electrochromic device in accordance with claim 10 in which said noble metal comprises Au.
Claim 15
Dependent Claim
20 words
An electrochromic device in accordance with claim 12 in which said noble metal comprises between 4 to 40 atomic percent.
Claim 16
Dependent Claim
17 words
An electrochromic device in accordance with claim 13 in which said metal comprises about 25 atomic percent.
Claim 17
Dependent Claim
15 words
An electrochromic device in accordance with claim 10 in which said noble metal comprises Ag.
Claim 18
Dependent Claim
20 words
An electrochromic device in accordance with claim 15 in which said noble metal comprises between 3 to 17 atomic percent.
Claim 19
Dependent Claim
15 words
An electrochromic device in accordance with claim 10 in which said noble metal comprises Pt.
Claim 20
Dependent Claim
19 words
An electrochromic device in accordance with claim 17 in which said noble metal comprises up to 40 atomic percent.
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) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |