US3816335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversibly thermochromic ionically and radiation cross-linked polymers containing cobaltous ions
Assignee: Raychem Corp
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Filing: 1971-10-14
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Granted: 1974-06-11
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Expires: 1991-10-14
Abstract
Abstract Articles having the property of heat recoverability which change color at some stage during heating to cause their recovery. The articles may be translucent or transparent. Preferred articles are those made from ionomers containing certain metal salts. Crosslinked and other novel ionomeric compositions are also disclosed.
Inventors
- 👤 J Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:34
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; B; B29; B29C; B29C61/00; B29C61/003; B41; B41M; B41M5/00; B41M5/26; B41M5/28; B41M5/282; B41M5/283; C; C08; C08F; C08F8/00; C08F8/44; C08K; C08K3/00; C08K3/01; B29K; B29K2096/00; B29K2096/005; B29K2995/00; B29K2995/0018; B29K2995/0026; B29K2995/0029
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
12 words
The composition of claim 1 wherein the composition also contains nitrate ions.
Claim 2
Dependent Claim
12 words
The composition of claim 1 wherein the composition also contains acetate ions.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein the composition also contains chloride ions.
Claim 4
Dependent Claim
12 words
The composition of claim 1 wherein the composition also contains iodine ions.
Claim 5
Dependent Claim
12 words
The composition of claim 1 wherein the composition also contains bromine ions.
Claim 6
Dependent Claim
12 words
The composition of claim 1 wherein the compoSition also contains hydroxyl ions.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the composition also contains stearate ions.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |