US2477383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonated detergent and its method of preparation
Assignee: California Research LLC
•
Filing: 1946-12-26
•
Granted: 1949-07-26
•
Expires: 1966-12-26
Abstract
No abstract record available.
Inventors
- 👤 Allen H Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:34
CPC Classifications
C; C07; C07C; C07C309/00; C07C11/00; C07C11/02; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; C07C309/01; C07C309/28; C07C309/29; C07C309/30; C07C309/31; C09; C09K; C09K23/00; C09K23/12; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/22; C11D10/00; C11D10/04; C11D10/042; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |