US2847400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic and methacrylic derivatives of urea and polymers thereof
Assignee: Rohm and Haas Co
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Filing: 1955-06-10
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Granted: 1958-08-12
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Expires: 1975-06-10
Abstract
No abstract record available.
Inventors
- 👤 Newman M Bortnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:37
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14; C07C275/10; C08; C08F; C08F20/00; C08F20/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A COMPOSITION OF MATTER COMPRISING A COMPOUND CH2=CR''CONHANHCONHR WHERE R IS A TERTIARY ALKYL GROUP HAVING 4 TO 24 CARBON ATOMS HAVING A TERTIARY CARBON ATOM ATTACHED TO THE ADJACENT NITROGEN ATOM, R'' IS SELECTED FROM THE GROUP CONSISTING OF H AND CH3, AND A IS AN ALKYLENE GROUP OF 2 TO 4 CARBON ATOMS, OF WHICH AT LEAST 2 EXTEND IN A CHAIN BETWEEN THE ADJOINING NH RADICALS.
Claim 2
Dependent Claim
69 words
A COMPOSITION OF MATTER COMPRISING A COMPOUND CH2=CR''CONHANHCONHR WHERE R IS A TERTIARY ALKYL GROUP HAVING 4 TO 24 CARBON ATOMS HAVING A TERTIARY CARBON ATOM ATTACHED TO THE ADJACENT NITROGEN ATOM, R'' IS SELECTED FROM THE GROUP CONSISTING OF H AND CH3, AND A IS AN ALKYLENE GROUP OF 2 TO 4 CARBON ATOMS, OF WHICH AT LEAST 2 EXTEND IN A CHAIN BETWEEN THE ADJOINING NH RADICALS.
References Cited (Backward Citations)
US2694695A
Cited
US2611782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |