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Patent US3019292A successfully refreshed from Google Patents.
US2434496A
Expired / Lapsed
US
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Light stable compositions comprising polymeric vinylidene chloride or vinyl chloride and certain 5-substituted 2-hydroxybenzophenones
Assignee: Dow Chemical Co
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Filing: 1945-03-02
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Granted: 1948-01-13
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Expires: 1965-03-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas Houtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |