US2565529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conjugated aldehyde-secondary amine reaction products
Assignee: Shell Development Co
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Filing: 1946-10-18
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Granted: 1951-08-28
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Expires: 1966-10-18
Abstract
No abstract record available.
Inventors
- 👤 Curtis W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:48
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/044; C10M2215/06; C10M2215/24; C10M2215/26; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN N,N,N'',N-SUBSTITUTED LOWER 2-ALKENE1,3-DIAMINE CHARACTERIZED IN THAT EACH OF THE AMINO NITROGEN ATOMS OF SAID DIAMINE IS A TERTIARY AMINO NITROGEN ATOM AND FURTHER CHARACTERIZED IN THAT EACH OF THE AMINO NITROGEN ATOMS HAS DIRECELY LINKED THERETO AS THE ONLY SUBSTITUENTS A LOWER HYDROCARBON RADICAL AND A LOWER 2-ALKENYL RADICAL.
Claim 2
Dependent Claim
50 words
AN N,N,N'',N-SUBSTITUTED LOWER 2-ALKENE1,3-DIAMINE CHARACTERIZED IN THAT EACH OF THE AMINO NITROGEN ATOMS OF SAID DIAMINE IS A TERTIARY AMINO NITROGEN ATOM AND FURTHER CHARACTERIZED IN THAT EACH OF THE AMINO NITROGEN ATOMS HAS DIRECELY LINKED THERETO AS THE ONLY SUBSTITUENTS A LOWER HYDROCARBON RADICAL AND A LOWER 2-ALKENYL RADICAL.
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) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |