Patent US3499861A successfully refreshed from Google Patents.
US3499861A
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Room temperature curing resin and foundry sand composition containing same
Assignee: Hooker Chemical Corp
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Filing: 1967-05-19
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Granted: 1970-03-10
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Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 Francis M Kujawa
- 👤 Jonathan A Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:13
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6492; B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/2273; C08G18/08; C08G18/10; C08G18/4009; C08G18/4081; C08G18/54; C08G18/546; C08L; C08L61/00; C08L61/04; C08L61/06; C08L61/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2308498A
Cited
US2391368A
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US2948694A
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US3242230A
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US3316140A
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US3468822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |