US3539646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenols and phenolic resins
Assignee: Hooker Chemical Corp
•
Filing: 1967-01-30
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Granted: 1970-11-10
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Bobby F Dannels
- 👤 Alvin F Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:32
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C37/00; C07C37/11; C07C37/14; C07C39/00; C07C39/12; C07C39/15; C07C39/16; C07C39/17; C07C39/18; C07C39/19; C07C41/00; C07C41/01; C07C41/05; C07C41/06; C08; C08G; C08G61/00; C08G61/02; C08G63/00; C08G63/02; C08G63/12; C08G63/123; C08G63/133; C08G8/00; C08G8/28; C08G8/30; C09; C09K; C09K15/00; C09K15/04; C09K15/06; C09K15/08; C07C2601/00; C07C2601/18; C07C2601/20; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/22; C07C2602/32; C10M2207/00; C10M2207/04; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2864868A
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US2321620A
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US2553470A
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US3232994A
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US3347935A
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US3408407A
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US3357947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |