US3035318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting metal in a coated mold, and composition and method for coating the casting mold
Assignee: Acheson Industries Inc
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Filing: 1959-09-03
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Granted: 1962-05-22
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Expires: 1979-09-03
Abstract
No abstract record available.
Inventors
- 👤 Erwin J Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:53
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/10; B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF CASTING HIGHLY CHEMICALLY REACTIVE METALS WHICH COMPRISE THE STEPS OF PREPARING A COATING COMPOSITION CONTAINING ABOUT 9.0% TO ABOUT 45% CALCIUM FLUORIDE, ABOUT 0.9% TO ABOUT 19% ALUMINA SOL, ABOUT 1% TO ABOUT 10% PHOSPHORIC ACID, ABOUT 27% TO ABOUT 80% WATER, APPLYING SAID COATING COMPOSITION TO A MOLD SURFACE TO FORM A UNIFORM COATING THEREON, REMOVING WATER FROM SAID COATING ON SAID SURFACE AND THEREAFTER CASTING A HIGHLY CHEMICALLY REACTIVE METAL ON SAID MOLD.
Claim 2
Independent Claim
78 words
A METHOD OF CASTING HIGHLY CHEMICALLY REACTIVE METALS WHICH COMPRISE THE STEPS OF PREPARING A COATING COMPOSITION CONTAINING ABOUT 9.0% TO ABOUT 45% CALCIUM FLUORIDE, ABOUT 0.9% TO ABOUT 19% ALUMINA SOL, ABOUT 1% TO ABOUT 10% PHOSPHORIC ACID, ABOUT 27% TO ABOUT 80% WATER, APPLYING SAID COATING COMPOSITION TO A MOLD SURFACE TO FORM A UNIFORM COATING THEREON, REMOVING WATER FROM SAID COATING ON SAID SURFACE AND THEREAFTER CASTING A HIGHLY CHEMICALLY REACTIVE METAL ON SAID MOLD.
References Cited (Backward Citations)
US2835608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |