US3549703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making n-(3-halopropyl)-n-methylhydrocarbon sulfonamides
Assignee: Merck and Co Inc
•
Filing: 1968-05-10
•
Granted: 1970-12-22
•
Expires: 1988-05-10
Abstract
No abstract record available.
Inventors
- 👤 Max Tishler
- 👤 John M Chemerda
- 👤 Janos Kollonitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:45
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/16; A61K31/18; C; C07; C07C; C07C311/00; C07C311/15
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |