US3471518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroalkyl dicarboxylic acids and derivatives
Assignee: Pennwalt Corp
•
Filing: 1967-07-10
•
Granted: 1969-10-07
•
Expires: 1987-07-10
Abstract
No abstract record available.
Inventors
- 👤 Robert B Hager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:57
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/252; C; C07; C07C; C07C323/00; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/64; C07F; C07F11/00; C07F11/005; C14; C14C; C14C9/00; D06M13/10; D06M13/224; D06M13/236
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3172910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |