Patent US4759116A successfully refreshed from Google Patents.
Patent US2514026A successfully refreshed from Google Patents.
US2514026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing z
Assignee: —
•
Filing: —
•
Granted: 1950-07-04
•
Expires: 1967-07-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:03
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/04; C07D307/18; C07D307/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
METHOD OF PREPARING 2,5-DIACYLOXY-2,5-DIHYDROFURANS IN WHICH A FURAN HAVING NO STRONG ELECTRONEGATIVE GROUPS IN THE A POSITON IS TREATED WITH HALOGEN, AN ORGANIC ACID AND AN ACID-BINDING AGENT.
Claim 2
Dependent Claim
28 words
METHOD OF PREPARING 2,5-DIACYLOXY-2,5-DIHYDROFURANS IN WHICH A FURAN HAVING NO STRONG ELECTRONEGATIVE GROUPS IN THE A POSITON IS TREATED WITH HALOGEN, AN ORGANIC ACID AND AN ACID-BINDING AGENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |