Patent US4923772A successfully refreshed from Google Patents.
US2437253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent composition
Assignee: Lever Brothers Co
•
Filing: 1940-01-08
•
Granted: 1948-03-09
•
Expires: 1960-01-08
Abstract
No abstract record available.
Inventors
- 👤 Lloyd F Henderson
- 👤 Bernard L Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:12
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/046; C11D3/06; C11D9/00; C11D9/04; C11D9/06; C11D9/08; C11D9/10; C11D9/12; C11D9/14; C11D2111/00; C11D2111/10; C11D2111/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB198681A
Cited
GB253554A
Cited
GB364565A
Cited
US2159381A
Cited
GB431682A
Cited
GB435475A
Cited
GB461328A
Cited
GB443731A
Cited
GB447072A
Cited
GB452649A
Cited
US2093927A
Cited
US2092913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-09 | 1951-09-08 | 1952-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-09 | 1955-09-08 | 1956-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-09 | 1959-09-08 | 1960-03-09 | $7700.00 | Window Closed / Lapsed |