US5377039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric electrochromic electrodes
Assignee: Dow Chemical Co
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Filing: 1993-02-05
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Granted: 1994-12-27
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Expires: 2013-02-05
Abstract
Abstract An improved multilayer electrochromic device, the improvement being to the electrochromic layer which necessarily must include an anion exchanging polymer having a polyoxometallate electrochromic counter ion. An example is the use of PW 12 O 40 3- as the polyoxometallate electrochromic counter ion of an anion exchanging polymer of 90% quaternized 4-vinylpyridine and 10% styrene. Another example is the use of H 2 W 12 O 40 6- as the polyoxometallate electrochromic counter ion of an anion exchanging polymer of 90% protonated 4-vinylpyridine and 10% styrene.
Inventors
- 👤 Susan J. Babinec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/155; G02F1/1514; G02F1/1516; G02F1/15165; G02F2202/00; G02F2202/02; G02F2202/022
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
37 words
In an improved multilayer electrochromic device comprising a polymeric electrochromic electrode incorporating an electrochromic material in a polymeric matrix, wherein the improvement comprises a nonintrinsically electronically conductive anion exchanging polymeric matrix comprising a polyoxometallate electrochromic counter ion.
Claim 2
Dependent Claim
37 words
In an improved multilayer electrochromic device comprising a polymeric electrochromic electrode incorporating an electrochromic material in a polymeric matrix, wherein the improvement comprises a nonintrinsically electronically conductive anion exchanging polymeric matrix comprising a polyoxometallate electrochromic counter ion.
Claim 3
Dependent Claim
12 words
The improved device of claim 1 wherein the polyoxometallate comprises a polytungstate.
Claim 4
Dependent Claim
17 words
The improved device of claim 1 wherein the polyoxometallate comprises (PW 12 O 40 ) 3- .
Claim 5
Dependent Claim
19 words
The improved device of claim 2 wherein the polytungstate comprises (H 2 W 12 O 40 ) 6- .
Claim 6
Dependent Claim
15 words
The improved device of claim 1 wherein the anion exchanging polymeric matrix comprises protonated polyvinylpyridine.
Claim 7
Dependent Claim
15 words
The improved device of claim 1 wherein the anion exchanging polymer matrix comprises quaternized polyvinylpyridine.
Claim 8
Dependent Claim
37 words
The improved device of claim 1 wherein the anion exchanging polymer matrix comprises a polyamine selected from the group consisting of a protonated primary polyamine, a protonated secondary polyamine, a protonated tertiary polyamine and a quaternary polyamine.
Claim 9
Dependent Claim
44 words
The improved device of claim 1 wherein the anion exchanging polymer matrix comprises a polyamine selected from the group consisting of a protonated primary polyamine, a protonated secondary polyamine, a protonated tertiary polyamine and a quaternary polyamine and wherein the polyoxometallate comprises a polytungstate.
Claim 10
Dependent Claim
40 words
The improved device of claim 1 wherein the anion exchanging polymer matrix is a copolymer consisting essentially of about 90% protonated 4-vinylpyridine and about 10% styrene and wherein the polyoxometallate comprises (H 2 W 12 O 40 ) 6- .
Claim 11
Dependent Claim
38 words
The improved device of claim 1 wherein the anion exchanging polymer matrix is a copolymer consisting essentially of about 90% quaternized 4-vinylpyridine and about 10% styrene and wherein the polyoxometallate comprises (PW 12 O 40 ) 3- .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |