Patent EP0158892A2 successfully refreshed from Google Patents.
US3290302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of benzothiadiazine-dioxides
Assignee: Union Carbide Corp
•
Filing: 1964-08-04
•
Granted: 1966-12-06
•
Expires: 1984-08-04
Abstract
No abstract record available.
Inventors
- 👤 Fernand G F Eloy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:43
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/15; C07D285/16; C07D285/18; C07D285/20; C07D285/22; C07D285/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS FOR THE PREPARATION OF 1,2,4-BENZOTHIADIAZINE-1,1-DIOXIDES OF THE FORMULA:
Claim 2
Dependent Claim
10 words
A PROCESS FOR THE PREPARATION OF 1,2,4-BENZOTHIADIAZINE-1,1-DIOXIDES OF THE FORMULA:
References Cited (Backward Citations)
US3118902A
Cited
US3118903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |