Patent US4135790A successfully refreshed from Google Patents.
US4135790A
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Electrochromic element
Assignee: Nikon Corp
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Filing: 1977-04-25
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Granted: 1979-01-23
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Expires: 1997-04-25
Abstract
Abstract An electrochromic element comprising a composite cell composed of a lamination of a plurality of unit cells, at least in partial registry with one another; each of said unit cells having a pair of transparent flat electrodes at least in partial registry with one another and an electrochromic material filling a space between said transparent electrodes, and a transparent substrate for supporting said composite cell.
Inventors
- 👤 Youske Takahashi
- 👤 Hideki Akasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:08
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/155
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
An electrochromic element comprising a composite cell composed of a lamination of a plurality of unit cells at least in partial registry with one another, each of said unit cells having a pair of transparent electrodes at least in partial registry with one another and an electrochromic material filling a space between said transparent electrodes, and a transparent substrate for supporting said composite cell.
Claim 2
Dependent Claim
64 words
An electrochromic element comprising a composite cell composed of a lamination of a plurality of unit cells at least in partial registry with one another, each of said unit cells having a pair of transparent electrodes at least in partial registry with one another and an electrochromic material filling a space between said transparent electrodes, and a transparent substrate for supporting said composite cell.
Claim 3
Dependent Claim
36 words
An electrochromic element as claimed in claim 1, wherein said transparent electrodes of adjacent ones of said unit cells, which are in facing relation to each other, are made integral to form a common transparent electrode.
Claim 4
Dependent Claim
49 words
An electrochromic element as claimed in claim 1, wherein at least one of said unit cells has a different electrochromic material from those of the remaining unit cells, said different electrochromic material having an optical absorption band different from those of the electrochromic material of said remaining unit cells.
Claim 5
Dependent Claim
32 words
An electrochromic element as claimed in claim 3, wherein at least one of said transparent electrodes of said composite cell is divided into a plurality of sections insulated electrically from each other.
Claim 6
Dependent Claim
27 words
An electrochromic element as claimed in claim 1, wherein the total thickness of said electrochromic materials of said composite cell is from about 0.5μ to about 1.0μ.
References Cited (Backward Citations)
US4006969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |