US2962531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3, 5-dialkyl-4-hydroxy benzylamines
Assignee: Ethyl Corp
•
Filing: 1955-09-23
•
Granted: 1960-11-29
•
Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Coffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:51
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/04; C10M133/06; C10M133/08; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10N; C10N2040/00; C10N2040/08; C10N2040/12; C10N2040/13; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A 3,5-DIALKYL-4-HYDROXYBENZYL AMINE HAVING THE FORMULA:
Claim 2
Dependent Claim
6 words
A 3,5-DIALKYL-4-HYDROXYBENZYL AMINE HAVING THE FORMULA:
References Cited (Backward Citations)
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US2363134A
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US2480449A
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US2489672A
Cited
US2604399A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |