US3684493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sea-water corrosion resisting steel containing aluminum for welding structures
Assignee: JFE Engineering Corp
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Filing: 1970-03-20
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Granted: 1972-08-15
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Expires: 1990-03-20
Abstract
Abstract A STEEL WHOSE SEA-WATER CORROSION RESISTABILITY IS MAINTAINED AND IMPROVED WITH THE ADDITION OF ALLOYING ELEMENTS WHICH ARE BASIICALLY CU,CR AND AL IN PLACE OF P AND CU AND MORE PARTICULARLY THE WELDABILITY OF SAID STEEL IS IMPROVED WITH THE ADDITION OF MORE THAN 0.30% AL.
Inventors
- 👤 Hiroyuki Kubota
- 👤 Akihiro Tamada
- 👤 Motonori Uemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:16
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/42
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |