Patent US3556928A successfully refreshed from Google Patents.
US3556928A
Expired / Lapsed
US
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Copper-clad plastic panel
Assignee: Milacron Inc
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Filing: 1968-03-05
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Granted: 1971-01-19
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Expires: 1988-03-05
Abstract
Abstract COPPER-CLAD PLASTIC PANELS HAVING PLASTIC BASES MOLDED FROM A POLYESTER/METHYL METHACRYLATE MOLDING COMPOSITION AND HAVING INCREASED INSULATION RESISTANCE ARE DISCLOSED. THE IMPROVEMENT IS ACHIEVED BY INCORPORATING A MINOR AMOUNT OF AN EPOXIDE IN THE MOLDING COMPOSITION. THE USEFUL EPOXIDES HAVE AT LEAST ONE EPOXIDE GROUP FOR EACH 950 UNITS OF MOLECULAR WEIGHT, NEITHER CARBON ATONOF THE EPOXY GROUP IS CONNECTED TO MORE THAN TWO OTHER CARBON ATOMS, AND THE EPOXY ARE SEPARATED BY ONE OR MORE CARBON ATOMS FROM ANY AROMATIC RING STRUCTURE THAT MAY BE PRESENT IN THE EPOXIDE.
Inventors
- 👤 Fred U Zolg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:48
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C; C08; C08L; C08L67/00; C08L67/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 0
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |