US3734723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compacted and sintered powder mass having a discrete cavity in the mass and method of forming
Assignee: United States Department of the Army
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Filing: 1970-09-04
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Granted: 1973-05-22
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Expires: 1990-09-04
Abstract
Abstract A STRUCTURE AND METHOD OF FORMING THE STRUCTURE OF A COMPACTED AND SINTERED POWDER MASS HAVING ONE OR MORE DISCRETE CAVITIES IN THE MASS. EACH CAVITY WITHIN THE MASS IS FORMED BY THE VAPORIZATON THROUGH SINTERING OF A CORE MATERIAL COMPACTED WITHIN THE POWDER MASS PRIOR TO SINTERING.
Inventors
- 👤 E Blasch
- 👤 R Klingaman
- 👤 D Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12361; Y10T428/12389
Claims Analysis
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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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |