US3107403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid curing resin-filler systems
Assignee: Dow Chemical Co
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Filing: 1959-12-21
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Granted: 1963-10-22
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 William G Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:25
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR THE PREPARATION OF A RAPIDLY CURED MOLDING CORE WHICH COMPRISES: (A) PROVIDING A MIXTURE CONSISTING ESSENTIALLY OF FROM ABOUT 1.5 TO ABOUT 4 PERCENT OF DIGLYCIDYL ETHER OF BISPHENOL A AND FROM ABOUT 96 TO 98.5 PERCENT SAND, (B) PLACING SAID MIXTURE IN A SHAPING MOLD AND TAMPING SAID MIXTURE IN A SAID MOLD THEREBY TO PREPA AND UNCURED SHAPED CORE, AND (C) PASSING UNDER PRESSURE THROUGH SAID CORE MOLD A CATALYTIC QUANTITY OF AN ELECTROPHYLIC, GASEOUS, STRONG LEWIS ACID CATALYST THEREBY TO POLYMERIZE SAID ETHER AS SAID CATALYST CONTACTS SAID ETHER AND SIMULTANEOUSLY PRODUCE A CURED CORE.
Claim 2
Dependent Claim
101 words
A PROCESS FOR THE PREPARATION OF A RAPIDLY CURED MOLDING CORE WHICH COMPRISES: (A) PROVIDING A MIXTURE CONSISTING ESSENTIALLY OF FROM ABOUT 1.5 TO ABOUT 4 PERCENT OF DIGLYCIDYL ETHER OF BISPHENOL A AND FROM ABOUT 96 TO 98.5 PERCENT SAND, (B) PLACING SAID MIXTURE IN A SHAPING MOLD AND TAMPING SAID MIXTURE IN A SAID MOLD THEREBY TO PREPA AND UNCURED SHAPED CORE, AND (C) PASSING UNDER PRESSURE THROUGH SAID CORE MOLD A CATALYTIC QUANTITY OF AN ELECTROPHYLIC, GASEOUS, STRONG LEWIS ACID CATALYST THEREBY TO POLYMERIZE SAID ETHER AS SAID CATALYST CONTACTS SAID ETHER AND SIMULTANEOUSLY PRODUCE A CURED CORE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |