US2862826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold material for casting group ivb metals and method of making same
Assignee: Universal Marion Corp
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Filing: 1956-08-13
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Granted: 1958-12-02
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Expires: 1976-08-13
Abstract
No abstract record available.
Inventors
- 👤 Frank X Hohn
- 👤 Francis H Hohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:12
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A CURED MOLD FOR MAKING GROUP IVB METAL CASTINGS COMPRISING A SUBSTANIALLY NON-REACTIVE FACING CONSISTING ESSENTIALLY OF A GRANULAR GRAPHITE BASE AND A CARBONIZED BINDER OF A CORN FLOUR DERIVATIVE, SAID FACING HAVING A SUBSTANTIALLY UNIFORM THICKNESS OF BETWEEN 1/2 AND 6 INCHES AND A BACKING OF OTHER MOLD MATERIAL.
Claim 2
Dependent Claim
45 words
A DRIED METAL FOUNDING MOLD ADAPTED TO BE CARBONIZED TO REMOVE GASEOUS MATTER THEREFROM FOR CASTING REACTIVE METALS WITHOUT SUBSTANTIAL CONTAMINATION, CONSISTING ESSENTIALLY TO ABOUR 95.8% TO 98.9%, BY WEIGHT, OF GRANULAR GRAPHITE, AND ABOUT 4.2% TO 1.1%, BY WEIGHT, OF A CORN FLOUR DERIVATIVE.
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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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |