US2941983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane-terminated polycarbodiimides
Assignee: EIDP Inc
•
Filing: 1957-05-07
•
Granted: 1960-06-21
•
Expires: 1977-05-07
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Smeltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:52
CPC Classifications
C; C08; C08G; C08G73/00; C08G18/00; C08G18/02; C08G18/025; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/2805; C08G18/2815; Y; Y10; Y10S; Y10S521/00; Y10S521/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
URETHANE-TERMINATED POLYCARBODIIMIDES HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
URETHANE-TERMINATED POLYCARBODIIMIDES HAVING THE FORMULA
References Cited (Backward Citations)
US2729618A
Cited
US2853473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |