Patent US5002156A successfully refreshed from Google Patents.
Patent US3209420A successfully refreshed from Google Patents.
US3209420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold and core binder for foundry use
Assignee: Archer Daniels Midland Co
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Filing: 1963-07-05
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Granted: 1965-10-05
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 William J King
- 👤 John J Uppgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:31
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/162
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
A COMPOSITION OF MATTER WHICH CONSISTS ESSENTIALLY OF A MAJOR PROPORTION OF A FINELY-DIVIDED REFRACTORY MATERIAL, OF ABOUT 1% TO ABOUT 6% BY WEIGHT OF SAID MATERIAL OF AN ALKALI-METAL SILICATE, AND A FURAN-MODIFIED UREA-FORMALDEHYDE RESIN WHEREIN THE FURAN MODIFIER CONSTITUTES FROM 5 TO 80 PERCENT BY WEIGHT OF SAID RESIN AND WHEREIN THE WEIGHT RATIO OF SAID RESIN TO SAID SILICATE IS FROM 4:1 TO 1:4.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |