Patent US2251768A successfully refreshed from Google Patents.
US2251768A
Expired / Lapsed
US
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Wetting and detergent composition
Assignee: Wyeth Holdings LLC
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Filing: 1938-09-29
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Granted: 1941-08-05
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Expires: 1958-09-29
Abstract
No abstract record available.
Inventors
- 👤 Robert C Swain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:56
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/123; C11D3/00; C11D3/16; C11D3/26; C11D3/32; C11D3/323; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
Claims Analysis
Total Claims: 0
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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) | 1944-08-04 | 1945-02-03 | 1945-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-04 | 1949-02-03 | 1949-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-04 | 1953-02-03 | 1953-08-05 | $7700.00 | Window Closed / Lapsed |