Patent US3400175A successfully refreshed from Google Patents.
US3400175A
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US
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Transparent impact polystyrene compositions containing a diolefin rubber
Assignee: Foster Grant Co Inc
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Filing: 1965-07-01
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Granted: 1968-09-03
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Expires: 1985-07-01
Abstract
No abstract record available.
Inventors
- 👤 Arnold B Finestone
- 👤 Richard C Westphal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:52
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08F; C08F279/00; C08F279/02; C08L25/14; C08L9/00; C08L9/06
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) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |