US2983597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal foam and method for making
Assignee: Lor Corp
•
Filing: 1959-06-11
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Granted: 1961-05-09
•
Expires: 1979-06-11
Abstract
No abstract record available.
Inventors
- 👤 John C Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:43
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12479
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF PRODUCING A CLOSED CELL METAL BODY HAVING AN APPARENT SPECIFIC GRAVITY OF LESS THAN 1 WHICH COMPRISES INTENSIVELY MIXING A METAL HYDRIDE INTO A MOLTEN METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ALUMINUM, LITHIUM AND MIXTURES THEREOF, WHILE MAINTAINING THE TEMPERATURE OF THE MIXTURE AT ABOVE THE MELTING POINT OF THE METAL, THEREBY PRODUCING A MOLTEN METAL FOAM, AND COOLING THE MOLTEN METAL FOAM TO PRODUCE A SOLID.
Claim 2
Independent Claim
72 words
THE METHOD OF PRODUCING A CLOSED CELL METAL BODY HAVING AN APPARENT SPECIFIC GRAVITY OF LESS THAN 1 WHICH COMPRISES INTENSIVELY MIXING A METAL HYDRIDE INTO A MOLTEN METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ALUMINUM, LITHIUM AND MIXTURES THEREOF, WHILE MAINTAINING THE TEMPERATURE OF THE MIXTURE AT ABOVE THE MELTING POINT OF THE METAL, THEREBY PRODUCING A MOLTEN METAL FOAM, AND COOLING THE MOLTEN METAL FOAM TO PRODUCE A SOLID.
References Cited (Backward Citations)
FR615147A
Cited
US1633258A
Cited
US2434775A
Cited
US2553016A
Cited
US2751289A
Cited
US2661238A
Cited
GB811814A
Cited
US2935396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |