US2980652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated derivatives of n-(omega-aminoalkyl)-1, 3-cyclodiazolidin-2-ones and copolymers thereof
Assignee: Rohm and Haas Co
•
Filing: 1958-09-19
•
Granted: 1961-04-18
•
Expires: 1978-09-19
Abstract
No abstract record available.
Inventors
- 👤 Melamed Sidney
- 👤 Louis C Souder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:36
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/06; C07D239/08; C07D239/10; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/32; C07D233/36; C07D403/00; C07D403/02; C07D403/06; C08; C08F; C08F22/00; C08F22/36; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/6266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AS A NEW COMPOSITION OF MATER, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) N-SUBSTITUTED AMIC ACIDS SELECTED FROM THE GROUP CONSISTING OF MALEAMIC ACID, CHLOROMALEAMIC ACID, FUMARAMIC ACID, ITACONAMIC ACID, AND CITRACONAMIC ACID, IN WHICH THE NITROGEN ATOM OF THE AMIC ACID IS DIRECTLY CONNECTED TO A GROUP OF THE FORMULA
Claim 2
Dependent Claim
53 words
AS A NEW COMPOSITION OF MATER, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) N-SUBSTITUTED AMIC ACIDS SELECTED FROM THE GROUP CONSISTING OF MALEAMIC ACID, CHLOROMALEAMIC ACID, FUMARAMIC ACID, ITACONAMIC ACID, AND CITRACONAMIC ACID, IN WHICH THE NITROGEN ATOM OF THE AMIC ACID IS DIRECTLY CONNECTED TO A GROUP OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |