Patent US2501896A successfully refreshed from Google Patents.
US2501896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dichlorovinm ethers
Assignee: —
•
Filing: —
•
Granted: 1950-03-28
•
Expires: 1967-03-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:04
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/225; C07C41/00; C07C41/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
DICHLOROVINYL ETHERS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
DICHLOROVINYL ETHERS OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2109514A
Cited
US2135123A
Cited
US797024A
Cited
DE216940C
Cited
US2133297A
Cited
GB539697A
Cited
US2170990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |