US2901514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certificate of correction
Assignee: —
•
Filing: —
•
Granted: 1959-08-25
•
Expires: 1976-08-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:58
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/48; C07C43/00; C07C43/30; C07C43/313; C07C41/50; C07C49/00; C07C49/04; C07C49/17; C07D; C07D319/00; C07D319/04; C07D319/06; C07D319/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A KETAL OF THE FORMULA
Claim 2
Dependent Claim
5 words
A KETAL OF THE FORMULA
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |