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US2981733A
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N-bis(p-dialkylaminophenyl)methyl derivatives of nitrogen-containing saturated heterocyclic compounds
Assignee: Honeywell International Inc
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Filing: 1958-05-12
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Granted: 1961-04-25
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Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Kranz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:37
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/135; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/1366; Y; Y10; Y10S; Y10S101/00; Y10S101/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
SATURATED HETEROCYCLIC IMINO DERIVATIVES OF BIS(PDIALKYLAMINOARYL)METHANE HAVING THE FORMULA WHEREIN R1, R2, R3 AND R4 ARE EACH SELECTED FROM THE GROUP CONSISTING OF THE LOWER ALKYL RADICALS,
Claim 2
Dependent Claim
27 words
SATURATED HETEROCYCLIC IMINO DERIVATIVES OF BIS(PDIALKYLAMINOARYL)METHANE HAVING THE FORMULA WHEREIN R1, R2, R3 AND R4 ARE EACH SELECTED FROM THE GROUP CONSISTING OF THE LOWER ALKYL RADICALS,
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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |