US3422119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic aromatic carbonate dimers
Assignee: General Electric Co
•
Filing: 1963-06-03
•
Granted: 1969-01-14
•
Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Robert J Prochaska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:43
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/02; C08G64/0208; C07; C07D; C07D323/00; C08G64/20; C08G64/22; C08G64/26; C08G64/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
AND UNSYMMETRICAL CYCLIC CIMERIC CARBONATE HAVING THE STRUCTURE
Claim 2
Dependent Claim
8 words
AND UNSYMMETRICAL CYCLIC CIMERIC CARBONATE HAVING THE STRUCTURE
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |