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US3798142A
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Corrosion protection
Assignee: Akzo Nobel UK PLC
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Filing: 1972-04-20
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Granted: 1974-03-19
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Expires: 1992-04-20
Abstract
Abstract A CORROSION RESISTANT STRUCTURE WHICH COMPRISES PLASTICS MATERIAL AND METAL, THE PLASTICS MATERIAL HAVING CARBON FIBRES INCORPORATED THEREIN AT SUCH A CONCENTRATION AS TO RENDER AT LEAST PART OF THE PLASTICS MATERIAL ELECTRICALLY CONDUCTING, THE PASTICS MATERIAL AND THE METAL EACH HAVING MEANS FOR ELECTRICALLY CONNECTING THEM TO A SOURCE OF ELECTRICAL SUPPLY SO THAT THE METAL IS ELECTROCHEMICALLY PROTECTED. EXAMPLES OF SUCH STRUCTURES ARE HEAT EXCHANGERS AND BOATS WITH GLASS FIBRE-REINFORCED HULLS.
Inventors
- 👤 L Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:38
CPC Classifications
F; F28; F28F; F28F19/00; F28F19/004; C; C23; C23F; C23F13/00; C23F13/02
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |