US2581253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallurgy
Assignee: SinterCast Corp of America
•
Filing: 1948-12-23
•
Granted: 1952-01-01
•
Expires: 1968-12-23
Abstract
No abstract record available.
Inventors
- 👤 John L Ellis
- 👤 Claus G Goetzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:13
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; Y; Y10; Y10S; Y10S425/00; Y10S425/811; Y10T; Y10T428/00; Y10T428/12; Y10T428/12479
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
AN APPARATUS FOR THE METAL INFILTRATION OF SKELETON BODIES PRODUCED BY SINTERING FROM REFRACTORY METAL AND METAL COMPOUND POWDERS COMPRISING AN OUTER RECEPTACLE, A CORE IN SAID RECEPTACLE, A PLURALITY OF CHAMBERS BETWEEN THE OUTSIDE OF SAID CORE AND SAID RECEPTACLE TO ACCOMMODATE SAID SKELETON BODIES DURING THEIR INFILTRATION, A RESERVOIR IN SAID CORE TO HOLD THE INFILTRATING METAL AND CONDUITS IN THE LOWER PORTION OF SAID CORE AND BENEATH SAID RESERVIOR CONNEC-
Claim 2
Independent Claim
73 words
AN APPARATUS FOR THE METAL INFILTRATION OF SKELETON BODIES PRODUCED BY SINTERING FROM REFRACTORY METAL AND METAL COMPOUND POWDERS COMPRISING AN OUTER RECEPTACLE, A CORE IN SAID RECEPTACLE, A PLURALITY OF CHAMBERS BETWEEN THE OUTSIDE OF SAID CORE AND SAID RECEPTACLE TO ACCOMMODATE SAID SKELETON BODIES DURING THEIR INFILTRATION, A RESERVOIR IN SAID CORE TO HOLD THE INFILTRATING METAL AND CONDUITS IN THE LOWER PORTION OF SAID CORE AND BENEATH SAID RESERVIOR CONNEC-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |