US2687403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated nu-substituted amides of tertiary alkyl substituted aromatic acids and polymers thereof
Assignee: Shell Development Co
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Filing: 1951-04-14
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Granted: 1954-08-24
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Expires: 1971-04-14
Abstract
No abstract record available.
Inventors
- 👤 Seaver A Ballard
- 👤 Rupert C Morris
- 👤 Vernon W Buls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:05
CPC Classifications
C; C08; C08F; C08F26/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
N-SUBSTITUTED AMIDES OF THE GROUP CONSISTING OF (1) N-ALKENYL SUBSTITUTED AMIDES OF TERTIARY ALKYL SUBSTITUTED AROMATIC CARBOXYLIC ACIDS CONTAINING A SINGLE SIX MEMBERED AROMATIC RING, (2) N-CARBALKENOXY SUBSTITUTED AMIDES OF TERTIARY ALKYL SUBSTITUTED AROMATIC CARBOXYLIC ACIDS CONTAINING A SINGLE SIX MEMBERED AROMATIC RING, AND (3) N - ALKENYL N - CARBOALKENOXY SUBSTITUTED AMIDES OF TERTIARY ALKYL SUBSTITUTED AROMATIC CARBOXYLIC ACIDS CONTAINING A SINGLE SIX MEMBERED AROMATIC RING, THE N-ALKENYL RADICALS ATTACHED TO THE NITROGEN ATOM OF THE ABOVE-DESCIRBED COMPOUNDS CONTAINING FROM 3 TO 12 CARBON ATOMS, THE ALKENOXY PORTON OF THE CARBALKENOXY RADICAL ATTACHED TO THE NITROGEN ATOM OF THE ABOVE-DESCRIBED COMPOUNDS CONTAINING NO MORE THAN 12 CARBON ATOMS AND THE TERTIARY ALKYL RADICAL ATTACHED TO THE AROMATIC ACID PORTIONS OF THE ABOVEDESCRIBED COMPOUNDS CONTAINING FROM 4 TO 12 CARBON ATOMS.
Claim 2
Dependent Claim
131 words
N-SUBSTITUTED AMIDES OF THE GROUP CONSISTING OF (1) N-ALKENYL SUBSTITUTED AMIDES OF TERTIARY ALKYL SUBSTITUTED AROMATIC CARBOXYLIC ACIDS CONTAINING A SINGLE SIX MEMBERED AROMATIC RING, (2) N-CARBALKENOXY SUBSTITUTED AMIDES OF TERTIARY ALKYL SUBSTITUTED AROMATIC CARBOXYLIC ACIDS CONTAINING A SINGLE SIX MEMBERED AROMATIC RING, AND (3) N - ALKENYL N - CARBOALKENOXY SUBSTITUTED AMIDES OF TERTIARY ALKYL SUBSTITUTED AROMATIC CARBOXYLIC ACIDS CONTAINING A SINGLE SIX MEMBERED AROMATIC RING, THE N-ALKENYL RADICALS ATTACHED TO THE NITROGEN ATOM OF THE ABOVE-DESCIRBED COMPOUNDS CONTAINING FROM 3 TO 12 CARBON ATOMS, THE ALKENOXY PORTON OF THE CARBALKENOXY RADICAL ATTACHED TO THE NITROGEN ATOM OF THE ABOVE-DESCRIBED COMPOUNDS CONTAINING NO MORE THAN 12 CARBON ATOMS AND THE TERTIARY ALKYL RADICAL ATTACHED TO THE AROMATIC ACID PORTIONS OF THE ABOVEDESCRIBED COMPOUNDS CONTAINING FROM 4 TO 12 CARBON ATOMS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |