US2892846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 7-benzyl ethers of flavonoid compounds
Assignee: Individual
•
Filing: 1958-01-14
•
Granted: 1959-06-30
•
Expires: 1978-01-14
Abstract
No abstract record available.
Inventors
- 👤 Jurd Leonard
- 👤 Laurence A Rolle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:07
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/22; C07D311/26; C07D311/28; C07D311/30; A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/771; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
10 words
THE PROCESS WHICH COMPRISES REACTING A COMPOUND OF THE FORMULA
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) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |