US2423075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alginate threads
Assignee: Akzo Nobel UK PLC
•
Filing: 1943-09-13
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Granted: 1947-06-24
•
Expires: 1963-09-13
Abstract
No abstract record available.
Inventors
- 👤 Hall Ronald Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:54
CPC Classifications
D; D01; D01F; D01F9/00; D01F9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR767874A
Cited
FR767875A
Cited
US2125031A
Cited
US2136386A
Cited
GB541848A
Cited
US2309072A
Cited
US2317492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |