US3198796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of benzobistriazoles
Assignee: Wyeth Holdings LLC
•
Filing: 1963-08-21
•
Granted: 1965-08-03
•
Expires: 1983-08-21
Abstract
No abstract record available.
Inventors
- 👤 Mosby William Lindsay
- 👤 Silva Mary-Louise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:37
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6561; C09; C09B; C09B57/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
THE COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA:
Claim 5
Dependent Claim
38 words
A PROCESS WHICH COMPRISES TREATING A COMPOUND OF CLAIM 2 WITH AN AQUEOUS STRONG ACID AT A TEMPERATURE BETWEEN 50*C. AND REFLUX IN THE PRESENCE OF A WATER MISCIBLE SOLVENT, AND RECOVERING THE PRODUCT OF THE FORMULA: 2,6-DI(H2N-)-4,8-DIHYDROBENZO(1,2-D:4,5-D'')BISTRIAZOL4,8-DIONE
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |