US2425626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making clay films
Assignee: Wyeth Holdings LLC
•
Filing: 1941-05-02
•
Granted: 1947-08-12
•
Expires: 1961-05-02
Abstract
No abstract record available.
Inventors
- 👤 Donald W Light
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:02
CPC Classifications
C; C08; C08L; C08L27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1888437A
Cited
US2120445A
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US2121018A
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US2266637A
Cited
US2266636A
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US2266638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |