Patent US3179990A successfully refreshed from Google Patents.
US3179990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundry composition with cross-linked polyester binder
Assignee: Freeman Chemical Corp
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Filing: 1961-10-26
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Granted: 1965-04-27
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Expires: 1981-10-26
Abstract
No abstract record available.
Inventors
- 👤 Stephen E Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:27
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/2266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF PRODUCING FOUNDRY STRUCTURES WHICH COMPRISES: FORMING A FOUNDRY CORE MIX WITH A MIXTURE OF ABOUT 99.5-94% OF REFRACTORY FOUNDRY MATERIAL AND UP TO ABOUT 6% OF POLYMERIZABLE RESIN MIX CONTAINING ETHYLENICALLY UNSATURATED POLYESTER RESIN FORMED FROM THE REACTION OF AN UNSATURATED POLYCARBOXYLIC ACID AND POLYHYDRIC ALCOHOL AND MONOMERIC, ETHYLENICALLY UNSATURATED, POLYMERIZABLE CROSS-LINKING AGENT, AT LEAST ABOUT 0.8% OF PEROXIDE POLYMERIZATION CATALYST THAT IS SOLUBLE IN SAID RESIN MIX, A POLYMERIZATION ACCELERATOR WHEN SAID CATALYST DOES NOT INCLUDE ACYL PEROXIDE, SAID ACCELERATOR, BEING IN THE FORM OF A SOLUBLE ORGANIC SALT WHICH PROVIDES AT LEAST ABOUT 0.025% METAL IN AN ACTIVE STATE THAT INDUCES ACCELERATION OF THE POLYMERIZATION OF SAID RESIN MIX, AND AT LEAST ABOUT 0.18% OF VAPOR PHASE N,N-DIALKYL TERTIARY
Claim 2
Independent Claim
124 words
THE METHOD OF PRODUCING FOUNDRY STRUCTURES WHICH COMPRISES: FORMING A FOUNDRY CORE MIX WITH A MIXTURE OF ABOUT 99.5-94% OF REFRACTORY FOUNDRY MATERIAL AND UP TO ABOUT 6% OF POLYMERIZABLE RESIN MIX CONTAINING ETHYLENICALLY UNSATURATED POLYESTER RESIN FORMED FROM THE REACTION OF AN UNSATURATED POLYCARBOXYLIC ACID AND POLYHYDRIC ALCOHOL AND MONOMERIC, ETHYLENICALLY UNSATURATED, POLYMERIZABLE CROSS-LINKING AGENT, AT LEAST ABOUT 0.8% OF PEROXIDE POLYMERIZATION CATALYST THAT IS SOLUBLE IN SAID RESIN MIX, A POLYMERIZATION ACCELERATOR WHEN SAID CATALYST DOES NOT INCLUDE ACYL PEROXIDE, SAID ACCELERATOR, BEING IN THE FORM OF A SOLUBLE ORGANIC SALT WHICH PROVIDES AT LEAST ABOUT 0.025% METAL IN AN ACTIVE STATE THAT INDUCES ACCELERATION OF THE POLYMERIZATION OF SAID RESIN MIX, AND AT LEAST ABOUT 0.18% OF VAPOR PHASE N,N-DIALKYL TERTIARY
References Cited (Backward Citations)
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Cited
US1831555A
Cited
US2480928A
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US2898259A
Cited
US2751775A
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US2930089A
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US2895935A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |