US3488335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclic fluorine containing compounds and polymers thereof
Assignee: EIDP Inc
•
Filing: 1964-03-11
•
Granted: 1970-01-06
•
Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 Robert A Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:51
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/18; C07D317/24; C07D317/20; C08; C08F; C08F24/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
A HOMOPOLYMER HAVING RECURRING UNITS OF THE STRUCTURE
References Cited (Backward Citations)
US2680735A
Cited
US2925424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |