US3095310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methyl cellulose additive for green molding sand
Assignee: Whitehead Brothers Co
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Filing: 1961-05-29
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Granted: 1963-06-25
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Burgess P Wallace
- 👤 Ronald E Melcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:54
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A GREEN SAND MOLD CONSISTING ESSENTIALLY OF A MIXTURE OF SILICA SAND, BONDING CLAY, TEMPER WATER AND AN AMOUNT OF AN ADDITIVE CONSISTING OF METHYL CELLULOSE HAVING IITS GREATEST ABILITY TO ABSORB WATER AT TEMPERATURE ABOVE 160*F. ANND FORMING GEL STRUCTURES AT TEMPERATURES SUBSTANTIALLY IN EXCESS OF 160*F. SUFFICIENT TO PREVENT THE FORMATION OF SURFACE DEFECTS IN CASTINGS MADE USING SAID MIXTURE.
Claim 2
Dependent Claim
62 words
A GREEN SAND MOLD CONSISTING ESSENTIALLY OF A MIXTURE OF SILICA SAND, BONDING CLAY, TEMPER WATER AND AN AMOUNT OF AN ADDITIVE CONSISTING OF METHYL CELLULOSE HAVING IITS GREATEST ABILITY TO ABSORB WATER AT TEMPERATURE ABOVE 160*F. ANND FORMING GEL STRUCTURES AT TEMPERATURES SUBSTANTIALLY IN EXCESS OF 160*F. SUFFICIENT TO PREVENT THE FORMATION OF SURFACE DEFECTS IN CASTINGS MADE USING SAID MIXTURE.
References Cited (Backward Citations)
US2398047A
Cited
GB754823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |