US3457272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-(o-benzoylsulfimido)lower fatty amines
Assignee: John Wyeth and Brother Ltd
•
Filing: 1965-03-01
•
Granted: 1969-07-22
•
Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Leonard Robert Crook
- 👤 Alexander Bertus Arnold Jansen
- 👤 Kenneth Eric Vincent Spencer
- 👤 David Harris Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:32
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D209/56; C07D209/58; C07D209/70; C07D221/00; C07D221/02; C07D221/04; C07D221/06; C07D221/14; C07D451/00; C07D451/02; C07D451/04; C07D451/06; C07D451/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3352880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |