US3249603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel pyrimidine sulfanilamides and processes for their preparation
Assignee: F Hoffmann La Roche AG
•
Filing: 1961-08-02
•
Granted: 1966-05-03
•
Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Bretschneider Hermann
- 👤 Richter Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:10
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/69
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 4-SULFANILAMIDO-5,6-DILOWER ALKOXYPYRIMIDINE AND ADDITION SALTS THEREOF WITH PHARMACEUTICALLY ACCEPTABLE ACIDS AND BASES.
Claim 2
Dependent Claim
20 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 4-SULFANILAMIDO-5,6-DILOWER ALKOXYPYRIMIDINE AND ADDITION SALTS THEREOF WITH PHARMACEUTICALLY ACCEPTABLE ACIDS AND BASES.
Claim 3
Dependent Claim
20 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 4-SULFANILAMIDO-5-LOWER ALKOXY-6-HALOPYRIMIDINE AND ADDITION SALTS THEREON WITH PHARMACEUTICALLY ACCEPTABLE ACIDS AND BASES.
Claim 4
Dependent Claim
20 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 4-SULFANILAMIDO-5-LOWER ALKOXY-6-HALOPYRIMIDINE AND ADDITION SALTS THEREON WITH PHARMACEUTICALLY ACCEPTABLE ACIDS AND BASES.
References Cited (Backward Citations)
US2430439A
Cited
US2487569A
Cited
US2616894A
Cited
AT183756B
Cited
DE926131C
Cited
US2703800A
Cited
US2871240A
Cited
US2712012A
Cited
US2980678A
Cited
US3082206A
Cited
BE588170A
Cited
US2947743A
Cited
US3091610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |