US3723104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory metal alloy bonded carbides for cutting tool applications
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1970-07-29
•
Granted: 1973-03-27
•
Expires: 1990-07-29
Abstract
Abstract THIS PATENT DESCRIBES A REFRACTORY METAL BONDED CARBIDE ALLOY FOR USE IN CUTTING TOOLS AND IN OTHER APPLICATIONS WHERE HIGH HARDNESS AND ABRASION RESISTANCE ARE REQUIRED. THE DESIRED FINE-GRAINED COMPOSITE STRUCTURE IS OBTAINED PREFERABLY BY METAL PHASE PRECIPITATION OF METAL ALLOYS WITHIN THE CARBIDE GRAINS, OF PREVIOUSLY PREPARED CERTAIN TERNARY OR HIGHER ALLOYS OF REFRACTORY TRANSITION METALS WITH CARBON. CONSOLIDATION OF THE COMPOSITES CAN BE AC- COMPLISHED BY MELTING AND CASTING OR POWDER METALLURGY TECHNIQUES.
Inventors
- 👤 E Rudy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:49
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |