US3259948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making fine grained castings
Assignee: Howmet Turbine Components Corp
•
Filing: 1962-04-09
•
Granted: 1966-07-12
•
Expires: 1982-04-09
Abstract
No abstract record available.
Inventors
- 👤 Roy C Feagin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:20
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/20; B22C; B22C23/00; B22C23/02; B22C3/00; B22C9/00; B22C9/02; B22C9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE METHOD OF MAKING A FINE GRAINED CASTING OF AN ALLOY WHICH COMPRUSES: (A) FORMING THE SURFACE OF THE MOLD IN WHICH SUCH CASTING IS MADE WITH A SURFACE LAYER COMPRISING A COMPOUND OF THE GROUP CONSISTING OF COBALT ALUMINATE AND COBALT SILICATE, (B) INTRODUCING A MELT OF THE ALLOY INTO THE MOLD, AND (C) COOLING THE ALLOY IN THE MOLD OF BELOW ITS FREEZING TEMPERATURE TO EFFECT CATALYZED NUCLEATION OF SAID ALLOY BY SAID COMPOUND DURING INITIAL SOLIDIFICATION OF THE MELT.
Claim 2
Independent Claim
82 words
THE METHOD OF MAKING A FINE GRAINED CASTING OF AN ALLOY WHICH COMPRUSES: (A) FORMING THE SURFACE OF THE MOLD IN WHICH SUCH CASTING IS MADE WITH A SURFACE LAYER COMPRISING A COMPOUND OF THE GROUP CONSISTING OF COBALT ALUMINATE AND COBALT SILICATE, (B) INTRODUCING A MELT OF THE ALLOY INTO THE MOLD, AND (C) COOLING THE ALLOY IN THE MOLD OF BELOW ITS FREEZING TEMPERATURE TO EFFECT CATALYZED NUCLEATION OF SAID ALLOY BY SAID COMPOUND DURING INITIAL SOLIDIFICATION OF THE MELT.
References Cited (Backward Citations)
US2778079A
Cited
US3019497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |