US3672881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making powder composites
Assignee: Carmet Co
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Filing: 1969-11-03
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Granted: 1972-06-27
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Expires: 1989-11-03
Abstract
Abstract DESCRIBED HEREIN IS A METHOD OF MAKING A COMPOSITE ARTICLE OF POWDERED METAL AND A REFACTORY HARD METAL COMPONENT WHICH INVOLVES FORMING A GREEN COMPACT OF POWDER METAL AND SINTERING THE COMPACT IN CONTACT WITH THE REFRACTORY HARD METAL COMPONENT TO METALLURGICALLY BOND THE TWO.
Inventors
- 👤 John J Sowko Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:57
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/05; B; B22; B22F; B22F7/00; B22F7/06; B22F7/062; Y; Y10; Y10S; Y10S228/00; Y10S228/903
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |