US3415865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoroalkyl polyfluoroxy compounds
Assignee: 3M Co
•
Filing: 1965-01-21
•
Granted: 1968-12-10
•
Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Julianne H Prager
- 👤 Phillip G Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:38
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/34; C07C31/38; C07C29/00; C07C29/68; C07C29/70; C07C31/28; C07C31/30; C07C409/00; C07C409/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA:
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA:
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) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |