Patent US3474079A successfully refreshed from Google Patents.
US3474079A
Expired / Lapsed
US
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Copolymer compositions
Assignee: GAF Corp
•
Filing: 1966-11-15
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Granted: 1969-10-21
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Expires: 1986-11-15
Abstract
No abstract record available.
Inventors
- 👤 Marvin M Fein
- 👤 Eugene S Barabas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:31
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3025279A
Cited
US2982762A
Cited
US3285888A
Cited
US3350366A
Cited
US3393186A
Cited
US3386977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |