US3374227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonamides
Assignee: BASF Corp
•
Filing: 1963-12-26
•
Granted: 1968-03-19
•
Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Paul
- 👤 Schweizer Ernst
- 👤 Eichenberger Kurt
- 👤 Wilhelm Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:34
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/38; C07D231/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
US2494524A
Cited
DE1119869B
Cited
DE1140940B
Cited
DE1144730B
Cited
US3028382A
Cited
US2988547A
Cited
US3198791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |