US3126294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold release material
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
•
Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:07
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE METHOD OF PREPARING A MOLD MADE OF COPPER TO ACCEPT MOLTEN COPPER FOR SOLIDIFICATION WITHOUT ADHERENCE TO SAID MOLD WHICH COMPRISES SLURRYING PRECIPITATED ALUMINA HYDRATE WHICH HAS BEEN CALCINED AT A TEMPERATURE IN THE RANGE BETWEEN 1800*F. AND 2200*F. IN A LIQUID MEDIUM SUBSTANTIALLY COMPLETELY VOLATILIZABLE AT TEMPERATURES BETWEEN 212*F. AND 287*F. AT ATMOSPHERIC PRESSURE, SAID CALCINED HYDRATE CONSISTING ESSENTIALLY OF
Claim 2
Independent Claim
62 words
THE METHOD OF PREPARING A MOLD MADE OF COPPER TO ACCEPT MOLTEN COPPER FOR SOLIDIFICATION WITHOUT ADHERENCE TO SAID MOLD WHICH COMPRISES SLURRYING PRECIPITATED ALUMINA HYDRATE WHICH HAS BEEN CALCINED AT A TEMPERATURE IN THE RANGE BETWEEN 1800*F. AND 2200*F. IN A LIQUID MEDIUM SUBSTANTIALLY COMPLETELY VOLATILIZABLE AT TEMPERATURES BETWEEN 212*F. AND 287*F. AT ATMOSPHERIC PRESSURE, SAID CALCINED HYDRATE CONSISTING ESSENTIALLY OF
References Cited (Backward Citations)
US2685528A
Cited
US1662354A
Cited
US1861562A
Cited
US1882972A
Cited
US2090408A
Cited
US1990075A
Cited
US2144532A
Cited
US2964383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |