Patent US2094546A successfully refreshed from Google Patents.
US2094546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alkyl sulphates
Assignee: POWER PATENTS CO
•
Filing: 1936-06-12
•
Granted: 1937-09-28
•
Expires: 1956-06-12
Abstract
No abstract record available.
Inventors
- 👤 Henry N Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:30
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/03; C07C29/04; C07C29/05; C07C29/06; C07C303/00; C07C303/24
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) | 1940-09-27 | 1941-03-29 | 1941-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-27 | 1945-03-29 | 1945-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-27 | 1949-03-29 | 1949-09-28 | $7700.00 | Window Closed / Lapsed |