US3504016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorinated polyesters
Assignee: EIDP Inc
•
Filing: 1969-02-28
•
Granted: 1970-03-31
•
Expires: 1989-02-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Smeltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:29
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3145222A
Cited
US3337644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |