US3346534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous foundry core binder
Assignee: Ashland LLC
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Filing: 1964-06-18
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Granted: 1967-10-10
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Bills Charles Tyler
- 👤 Peter A Yurcick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:46
CPC Classifications
C; C08; C08G; C08G16/00; C08G16/02; C08G16/025; C08G16/0256; C08G16/0262
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
PROCESS OF PRODUCING A RESINOUS COMPOSITION ADAPTED FOR USE AS A FOUNDRY CORE BINDER WHICH COMPRISES FORMING A MIXTURE OF UREA AND FOR EACH MOL THEREOF FROM ABOUT 2.0 TO ABOUY 4.5 MOLS OF FORMALDEHYDE AND FROM ABOUT 0.20 TO ABOUT 1.5 MOLS OF FURFURYL ALCOHOL AND FROM ABOUT 0.01 TO ABOUT 0.5 MOL OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MELAMINE, DICYANDIAMIDE, BENZOGUANAMINE AND MIXTURES THEREOF, AND CONDENSING SAID MIXTURE AT ELEVATED TEMPERATURE TO FORM A RESINOUS COMPOSITION.
Claim 2
Dependent Claim
81 words
PROCESS OF PRODUCING A RESINOUS COMPOSITION ADAPTED FOR USE AS A FOUNDRY CORE BINDER WHICH COMPRISES FORMING A MIXTURE OF UREA AND FOR EACH MOL THEREOF FROM ABOUT 2.0 TO ABOUY 4.5 MOLS OF FORMALDEHYDE AND FROM ABOUT 0.20 TO ABOUT 1.5 MOLS OF FURFURYL ALCOHOL AND FROM ABOUT 0.01 TO ABOUT 0.5 MOL OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MELAMINE, DICYANDIAMIDE, BENZOGUANAMINE AND MIXTURES THEREOF, AND CONDENSING SAID MIXTURE AT ELEVATED TEMPERATURE TO FORM A RESINOUS COMPOSITION.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |