US2628250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary ester
Assignee: —
•
Filing: 1951-06-05
•
Granted: 1953-02-10
•
Expires: 1971-06-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:20
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/67; C07C69/716; C07C69/72; C07C67/00; C07C67/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
THE COMPOUND T-VINYLISOPROPYL ACETOACETATE.
Claim 2
Dependent Claim
4 words
THE COMPOUND T-VINYLISOPROPYL ACETOACETATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |