Patent US3399237A successfully refreshed from Google Patents.
US3399237A
Expired / Lapsed
US
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Ultraviolet light stabilizers for plastic materials
Assignee: Beazer East Inc
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Filing: 1964-06-17
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Granted: 1968-08-27
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Expires: 1984-06-17
Abstract
No abstract record available.
Inventors
- 👤 Dressler Hans
- 👤 Kenneth G Reabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375; C07; C07C; C07C323/00; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/75; C07C49/00; C07C49/76; C07C49/82; C07C49/83; C08K5/04; C08K5/13; C08K5/132
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |