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US2741625A
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Tertiary alkyl derivatives of n,n'-dialkyl-1,4-benzoquinone dimine
Assignee: EIDP Inc
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Filing: 1953-12-30
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Granted: 1956-04-10
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Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Charles J Pedersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:23
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A TERTIARY ALKYL DERIVATIVE OF N,N''-DIALKYL-1,4BENZOQUINONE DIIMINE HAVING THE FOLLOWING FORMULA
Claim 2
Dependent Claim
11 words
A TERTIARY ALKYL DERIVATIVE OF N,N''-DIALKYL-1,4BENZOQUINONE DIIMINE HAVING THE FOLLOWING FORMULA
References Cited (Backward Citations)
US2118826A
Cited
US2681918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |