Patent US4404331A successfully refreshed from Google Patents.
US4404331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enamel having improved coatability and insulated electrical articles produced therefrom
Assignee: Von Roll Isola USA Inc
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Filing: 1982-05-21
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Granted: 1983-09-13
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Expires: 2002-05-21
Abstract
Abstract Improved enamels and insulated electrical articles produced therefrom are described. The enamels are composed of solutions of curable resin which have been modified to contain nylon polymer. This polymer facilitates application of the enamel to a metallic conductor so as to produce an especially smooth and desirable insulation coating.
Inventors
- 👤 Denis R. Pauze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:21
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/306; C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
35 words
In an enamel composition consisting essentially of a curable polyesterimide resin dissolved in a solvent therefor, the improvement wherein said composition additionally contains an amount of nylon polymer sufficient to enhance surface coatability and smoothness.
Claim 2
Dependent Claim
35 words
In an enamel composition consisting essentially of a curable polyesterimide resin dissolved in a solvent therefor, the improvement wherein said composition additionally contains an amount of nylon polymer sufficient to enhance surface coatability and smoothness.
Claim 3
Dependent Claim
20 words
The composition of claim 1, wherein the polymer and resin are in a weight ratio of from 2:25 to 0.5:25.
Claim 4
Dependent Claim
19 words
The composition of claim 1, wherein the resin is present in from 15 to 60% by weight of solvent.
Claim 5
Dependent Claim
17 words
The composition of claim 1, wherein said composition additionally contains poly-functional isocyanate cross-linking agent for the resin.
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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) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |