US3705030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed metal
Assignee: Ethyl Corp
•
Filing: 1970-10-30
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Granted: 1972-12-05
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Expires: 1990-10-30
Abstract
Abstract A PROCESS FOR STRENGTHENING A FOAMED METAL OR FOAMED METAL ALLOY WITH A MEAL OXIDE FORMED IN SITU BY MELTING THE METAL OR METAL ALLOY, MIXING AN OXYEN CONTAINING AGENT INTO THE METAL OR METAL ALLOY, AND FOAMING THE METAL OR METAL ALLOY.
Inventors
- 👤 Currie B Berry Jr
- 👤 Robert J Fanning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:07
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/08; C22C1/083
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |