US4345000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent electrically conductive film
Assignee: Nitto Denko Corp
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Filing: 1980-12-15
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Granted: 1982-08-17
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Expires: 2000-12-15
Abstract
Abstract A transparent electrically conductive film and processes for the production thereof are described, said film comprising a metallic oxide wherein the metallic component comprises from 60 to 95 wt % indium and from 40 to 5 wt % tin formed on the surface of a plastic base, wherein the weight ratio of the tin to the indium changes continuously from the outer surface to the inner surface in such a manner that the ratio on the inner surface of the film is appreciably lower than the average ratio of the film and the ratio on the outer surface of the film is appreciably higher than the average ratio of the film.
Inventors
- 👤 Shozo Kawazoe
- 👤 Takao Matsui
- 👤 Takahiko Moriuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:42
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/0102; C; C08; C08J; C08J7/00; C08J7/04; C08J7/043; C08J7/044; C08J7/06; C23; C23C; C23C14/00; C23C14/06; C23C14/08; C23C14/086; H; H01; H01B; H01B1/00; H01B1/06; H01B1/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
A transparent electrically conductive film comprising a metallic oxide, wherein the metallic component comprises from 60 to 95 wt% indium and from 40 to 5 wt% tin, formed on the surface of a plastic base, and wherein the weight ratio of the tin to the indium changes continuously from the outer surface to the inner surface in such a manner that the ratio on the inner surface of the film is appreciably lower than the average ratio of the film and the ratio of the outer surface of the film is appreciably higher than the average ratio of the film.
Claim 2
Dependent Claim
100 words
A transparent electrically conductive film comprising a metallic oxide, wherein the metallic component comprises from 60 to 95 wt% indium and from 40 to 5 wt% tin, formed on the surface of a plastic base, and wherein the weight ratio of the tin to the indium changes continuously from the outer surface to the inner surface in such a manner that the ratio on the inner surface of the film is appreciably lower than the average ratio of the film and the ratio of the outer surface of the film is appreciably higher than the average ratio of the film.
Claim 3
Dependent Claim
43 words
A film as in claim 1 wherein the film has a thickness of from 40 to 10,000 A, a transmittance of visible light at 600 nm of at least 60%, and a surface resistivity of from 0.01 to 10 5 kΩ/cm 2 .
Claim 4
Dependent Claim
33 words
A film as in claim 2 wherein the thickness is from 40 to 6,000 A, the transmittance is at least 80%, and the surface resistivity if from 0.1 to 100 kΩ/cm 2 .
Claim 5
Dependent Claim
33 words
A film as in claim 3 wherein the thickness is from 60 to 2,000 A, the transmittance is at least 90%, and the surface resistivity is from 0.1 to 10 kΩ/cm 2 .
Claim 6
Dependent Claim
28 words
A film as in claim 1, 2, 3, or 4, wherein the metallic component comprises from 65 to 90 wt% indium and from 35 to 10 wt% tin.
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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |