US3451741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochromic device
Assignee: EIDP Inc
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Filing: 1966-06-15
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Granted: 1969-06-24
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Expires: 1986-06-15
Abstract
No abstract record available.
Inventors
- 👤 Philip Manos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
H; H05; H05B; H05B33/00; C; C09; C09K; C09K9/00; C09K9/02; F; F21; F21V; F21V9/00; F21V9/40; G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1503; G02F1/153; G02F1/1533; G02F2001/1502; G02F1/1514; G02F2001/15145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A COLOR-REVERSAL ELECTROCHROMIC DEVICE COMPRISING: (A) A UNIT CELL DEFINING A VOLUME HAVING A FRONT TRANSPARENT AREA ELECTRODE SPACED FORM A FACING BACK AREA ELECTRODE, (B) MEANS FOR APPLYING A COLOR-FORMING POTENTIAL ACROSSS SAID CELL WITH MEANS FOR REVERSING ELECTRODE POLARITY, (C) AN ELECTROLYTICALLY-CONDUCTIVE COLOR CHANGE COMPOSITION OCCUPING SAID VOLUME WHICH COMPRISES: (1) A REDUCTANT/OXIDANT PAIR WHERE (A) SAID REDUCTANT IS A MEMBER OF A REDOX COUPLE, THAT IS, SAID REDUCTANT IS ANODICALLY OXIDIZABLE AND CATHODICALLY REGENERATABLE, (B) SAID OXIDANT IS A MEMBER OF A REDOX COUPLE, THAT IS, SAID MEMBER IS CATHODICALLY REDUCIBLE AND ANODICALLY REGENERATABLE, (C) AT LEAST ONE OF SAID REDOX COUPLES IS A COLOR CHANGE COUPLE, THAT IS, THE REDOX MEMBERS ARE DIFFERENTLY COLORED, (2) A COLOR CONTROL MEANS FOR PREVENTING VISUAL OBSERVATION OF THE REDOX COUPLE''S COLLORED SPECIES AT THE BACK ELECTRODE WHEN THE COLORED SPECIES IS BEING ELECTROLYTICALLY DECOLORED AT THE FROM ELECTRODE, AND (3) A FLUID ELECTROLYTE WHICH (A) SOLUBILIZES COLOR-IMPARTING AMOUNTS OF SAID REDOX COMPONENTS (B) IS INERT TO THE ELECTRODES AND THE REDOX COMPONENTS, AND (C) EXCLUSIVE OF THE REDOX COMPONENTS DOES NOT ELECTROLYZE IN PREFERENCE TO THE REDOX COMPONENTS AT COLOR-FORMING POTENTIALS.
Claim 2
Dependent Claim
192 words
A COLOR-REVERSAL ELECTROCHROMIC DEVICE COMPRISING: (A) A UNIT CELL DEFINING A VOLUME HAVING A FRONT TRANSPARENT AREA ELECTRODE SPACED FORM A FACING BACK AREA ELECTRODE, (B) MEANS FOR APPLYING A COLOR-FORMING POTENTIAL ACROSSS SAID CELL WITH MEANS FOR REVERSING ELECTRODE POLARITY, (C) AN ELECTROLYTICALLY-CONDUCTIVE COLOR CHANGE COMPOSITION OCCUPING SAID VOLUME WHICH COMPRISES: (1) A REDUCTANT/OXIDANT PAIR WHERE (A) SAID REDUCTANT IS A MEMBER OF A REDOX COUPLE, THAT IS, SAID REDUCTANT IS ANODICALLY OXIDIZABLE AND CATHODICALLY REGENERATABLE, (B) SAID OXIDANT IS A MEMBER OF A REDOX COUPLE, THAT IS, SAID MEMBER IS CATHODICALLY REDUCIBLE AND ANODICALLY REGENERATABLE, (C) AT LEAST ONE OF SAID REDOX COUPLES IS A COLOR CHANGE COUPLE, THAT IS, THE REDOX MEMBERS ARE DIFFERENTLY COLORED, (2) A COLOR CONTROL MEANS FOR PREVENTING VISUAL OBSERVATION OF THE REDOX COUPLE''S COLLORED SPECIES AT THE BACK ELECTRODE WHEN THE COLORED SPECIES IS BEING ELECTROLYTICALLY DECOLORED AT THE FROM ELECTRODE, AND (3) A FLUID ELECTROLYTE WHICH (A) SOLUBILIZES COLOR-IMPARTING AMOUNTS OF SAID REDOX COMPONENTS (B) IS INERT TO THE ELECTRODES AND THE REDOX COMPONENTS, AND (C) EXCLUSIVE OF THE REDOX COMPONENTS DOES NOT ELECTROLYZE IN PREFERENCE TO THE REDOX COMPONENTS AT COLOR-FORMING POTENTIALS.
References Cited (Backward Citations)
US1068774A
Cited
US3123806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |