Patent US3586543A successfully refreshed from Google Patents.
US3586543A
Expired / Lapsed
US
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Coating treatment of metal surface
Assignee: JFE Engineering Corp
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Filing: 1968-10-16
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Granted: 1971-06-22
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Expires: 1988-10-16
Abstract
Abstract IMPROVED CORROSION RESISTANT FILMS ARE FORMED ON METAL SURFACES AND COATING PROPERTIES ARE IMPROVED BY IMMERSING METALS IN SOLUTIONS OF MOLYBDIC ACID OR SALT THEREOF AND A WATER SOLUBLE ORGANIC HIGH POLYMER. THE TREATMENT IS PARTICULARLY EFFECTIVE FOR STEEL AND GALVANIZED STEEL SHEETS AND PIPES.
Inventors
- 👤 Hiroshi Iijima
- 👤 Yutaro Goto
- 👤 Masaji Terasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:47
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73; C23C22/74; B; B05; B05D; B05D7/00; B05D7/14
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |