US2424778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for and method of whitening textiles with a blue fluorescent material and ultramarine
Assignee: Lever Brothers Co
•
Filing: 1944-05-02
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Granted: 1947-07-29
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Expires: 1964-05-02
Abstract
No abstract record available.
Inventors
- 👤 Tainsh Peter Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:20
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/02; G01R17/06; G01R17/08; D; D06; D06L; D06L4/00; D06L4/60; D06L4/657; D21; D21H; D21H21/00; D21H21/14; D21H21/30; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918; Y10S8/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |