Patent US2386138A successfully refreshed from Google Patents.
Patent US3249603A successfully refreshed from Google Patents.
US3249603A
Expired / Lapsed
US
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Novel pyrimidine sulfanilamides and processes for their preparation
Assignee: F Hoffmann La Roche AG
•
Filing: 1961-08-02
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Granted: 1966-05-03
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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 12:22
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.
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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 |