Patent US2540233A successfully refreshed from Google Patents.
US2540233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing porous metallic bodies
Assignee: Battelle Development Corp
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Filing: 1948-07-10
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Granted: 1951-02-06
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Expires: 1968-07-10
Abstract
No abstract record available.
Inventors
- 👤 Wallace W Beaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:42
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F2998/00; B22F2998/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF INCREASING THE STRENGTH WITHOUT SUBSTANTIALLY INCREASING THE SEALED POROSITY OF A POROUS, METALLIC BODY, WHICH COMPRISES IMPREGNATING A DUCTILE, POROUS, PERMEABLE METALLIC BODY WITH A MATERIAL IN A LIQUID STATE, SAID MATERIAL BEING INSOLUBLE WITH RESPECT TO THE METAL OF WHICH SAID BODY IS MADE, COMPRESSING SAID IMPREGNATED BODY TO INCREASE ITS DENSITY WHILE SAID MATERIAL IS IN A LIQUID STATE, AND FINALLY SLOWLY HEATING SAID BODY TO SINTERING TEMPERATURES IN AN ATMOSPHERE OF HYDROGEN.
Claim 2
Independent Claim
78 words
THE METHOD OF INCREASING THE STRENGTH WITHOUT SUBSTANTIALLY INCREASING THE SEALED POROSITY OF A POROUS, METALLIC BODY, WHICH COMPRISES IMPREGNATING A DUCTILE, POROUS, PERMEABLE METALLIC BODY WITH A MATERIAL IN A LIQUID STATE, SAID MATERIAL BEING INSOLUBLE WITH RESPECT TO THE METAL OF WHICH SAID BODY IS MADE, COMPRESSING SAID IMPREGNATED BODY TO INCREASE ITS DENSITY WHILE SAID MATERIAL IS IN A LIQUID STATE, AND FINALLY SLOWLY HEATING SAID BODY TO SINTERING TEMPERATURES IN AN ATMOSPHERE OF HYDROGEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |