US3330872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorine-containing hemiketals
Assignee: Monsanto Research Corp
•
Filing: 1966-04-28
•
Granted: 1967-07-11
•
Expires: 1986-04-28
Abstract
No abstract record available.
Inventors
- 👤 William E Weesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:19
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6826; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3802; C08G18/3804; C08G18/3812; C10; C10M; C10M3/00; C10M2217/00; C10M2217/02; C10M2217/04; C10M2217/042; C10M2217/043; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A FLUORINE-CONTAINING HEMIKETAL OF THE FORMULA
Claim 2
Dependent Claim
6 words
A FLUORINE-CONTAINING HEMIKETAL OF THE FORMULA
References Cited (Backward Citations)
US2245260A
Cited
US2931838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |