US2925424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroketals and their preparation
Assignee: EIDP Inc
•
Filing: 1956-05-03
•
Granted: 1960-02-16
•
Expires: 1976-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard E Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:08
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
2,2-BIS(CHLORODIFLUOROMETHYL) -1,3-DIOXANE.
Claim 2
Dependent Claim
107 words
A COMPOUND OF THE GROUP CONSISTING OF 1,3-DIOXOLANES, 1,3-DIOXANES AND 1,3-DIOXEPANES WHEREIN (1) THE 2-CARBON CARRIES A MEMBER OF THE GROUP CONSISTING OF TWO MONOVALENT PERHALOGENEATED HYDROCARBON RADICALS OF NO MORE THAN 7 CARBONS EACH AND ONE DIVALENT PERHALOGENATED HYDROCARBON RADICAL FORMING WITH THE 2-CARBON A CARBOCYCLE OF 5 TO 7 RING CARBONS, (2) EACH CARBON DIRECTLY ATTACHED TO THE 2-CARBON CARRIES AT LEAST ONE FLUORINE, (3) EACH HETEROCYCLIC RING CARNON OTHER THAN THE 2CARBON CARRIES TWO MEMBERS OF THE GROUP CONSISTING OF HYDROGEN, HALOGEN IN THE COMPOUND IS OD ATOMIC NUMBER NO (4) ALL HALOGEN IN THE COMPOUND IS OF ATOMIC NUMBER NO GREATER THAN 53.
References Cited (Backward Citations)
US2260261A
Cited
GB583874A
Cited
US2433844A
Cited
US2522566A
Cited
US2609304A
Cited
US2595304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |