US2432242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calendered sheet comprising the reaction product of a polyvinyl acetal and an alcohol-modified ureaformaldehyde resin and method of making same
Assignee: EIDP Inc
•
Filing: 1943-02-20
•
Granted: 1947-12-09
•
Expires: 1963-02-20
Abstract
No abstract record available.
Inventors
- 👤 Robert M Leekley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:07
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1242592A
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US1721742A
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US1963253A
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US1890424A
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US1989246A
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US1890425A
Cited
US2195254A
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US2277480A
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US2280829A
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US2268121A
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US2301959A
Cited
US2317131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |