US3424749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain n-(benzenesulfonyl) pipecolinic acids and lower alkyl esters thereof
Assignee: Individual
•
Filing: 1967-01-19
•
Granted: 1969-01-28
•
Expires: 1987-01-19
Abstract
No abstract record available.
Inventors
- 👤 Heinz A Pfenninger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:42
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/92; C07D211/96; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3336322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |