Patent US2957833A successfully refreshed from Google Patents.
US2957833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a moldable composition from styrene and a styrene-rubber interpolymer
Assignee: Foster Grant Co Inc
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Filing: 1958-03-31
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Granted: 1960-10-25
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Sidney J Baum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:42
CPC Classifications
C; C08; C08F; C08F285/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2317859A
Cited
US2460300A
Cited
US2745818A
Cited
US2755270A
Cited
US2754282A
Cited
GB749494A
Cited
GB766585A
Cited
GB778102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |