US3243397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold and core coating composition from calcined hydrated aluminum silicate, mica, and bentonite
Assignee: Motors Liquidation Co
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Filing: 1961-08-18
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Granted: 1966-03-29
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Expires: 1981-08-18
Abstract
No abstract record available.
Inventors
- 👤 Phillip F Herkimer
- 👤 Jr Neil M Lottridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:24
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A SLURRY FOR COATING CASTING-DEFINING SURFACES OF FOUNDRY SAND MOLDS, SAID SLURRY BEING FORMED FROM A DRY BLEND COMPRISING APPROXIMATELY 10% TO 85F% BY WEIGHT OF MICA POWDER, 10% TO 86% BY WEIGHT OF CALCINED HYDRATED ALUMINUM SILICATE AND 3% TO 15% BY WEIGHT OF BENTONITE TO WHICH HAS BEEN ADDED A LIQUID CARRIER IN AN AMOUNT SUFFICIENT TO CONSTITUTE ABOUT 50% TO 83% OF THE TOTAL WEIGHT OF THE SLURRY, THE PARTICLE SIZE OF THE SOLID CONSTITUENTS IN SAID SLURRY NOT EXCEEDING APPROXIMATELY -80 MESH.
Claim 2
Dependent Claim
86 words
A SLURRY FOR COATING CASTING-DEFINING SURFACES OF FOUNDRY SAND MOLDS, SAID SLURRY BEING FORMED FROM A DRY BLEND COMPRISING APPROXIMATELY 10% TO 85F% BY WEIGHT OF MICA POWDER, 10% TO 86% BY WEIGHT OF CALCINED HYDRATED ALUMINUM SILICATE AND 3% TO 15% BY WEIGHT OF BENTONITE TO WHICH HAS BEEN ADDED A LIQUID CARRIER IN AN AMOUNT SUFFICIENT TO CONSTITUTE ABOUT 50% TO 83% OF THE TOTAL WEIGHT OF THE SLURRY, THE PARTICLE SIZE OF THE SOLID CONSTITUENTS IN SAID SLURRY NOT EXCEEDING APPROXIMATELY -80 MESH.
References Cited (Backward Citations)
US1990075A
Cited
US2299374A
Cited
US2857285A
Cited
US2847741A
Cited
US2988525A
Cited
US3002948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |