US2716666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of anthranyl vinyl ethers
Assignee: BASF SE
•
Filing: 1953-01-09
•
Granted: 1955-08-30
•
Expires: 1973-01-09
Abstract
No abstract record available.
Inventors
- 👤 Reppe Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:07
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
17 words
AN ANTHRANYL-(9) VINYL ETHER SELECTED FROM THE CLASS CONSISTING OF ANTHRANYL-(9) VINYL ETHER AND 1,4-DIMETHYLANTHRANYL-(9) VINYL ETHER.
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) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |