Patent US2574649A successfully refreshed from Google Patents.
US2574649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl ether of chlorofluoro
Assignee: —
•
Filing: —
•
Granted: 1951-11-13
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Expires: 1968-11-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:26
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/12; C07C21/00; C07C21/02; C07C21/18; C07C19/00; C07C19/08; C07C43/14; C07C43/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
AS A NEW COMPOUND, AN ALKYL ETHER OF A CHLOROFLUOROHEPTENE CONTAINING AT LEAST 8 FLUORINE ATOMS IN THE HEPTENE RADICAL.
Claim 2
Dependent Claim
20 words
AS A NEW COMPOUND, AN ALKYL ETHER OF A CHLOROFLUOROHEPTENE CONTAINING AT LEAST 8 FLUORINE ATOMS IN THE HEPTENE RADICAL.
References Cited (Backward Citations)
GB523449A
Cited
US2336921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |