US3806491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundry binder composition comprising a ketone-aldehyde product
Assignee: Ashland LLC
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Filing: 1972-11-17
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Granted: 1974-04-23
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Expires: 1992-11-17
Abstract
Abstract A BINDER COMPOSITION SUITABLE FOR FOUNDRY AGGREGATES IS OBTAINED FROM CERTAIN KETONE-ALDEHYDE REACTION PRODUCTS AND FURFURYL ALCOHOL AND/OR FURAN RESIN.
Inventors
- 👤 J Gardikes
- 👤 Y Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/224; C; C08; C08G; C08G16/00; C08G16/02; C08G16/025; C08G16/0256; C08G16/0262; C08L; C08L61/00; C08L61/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |