US3379702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing terpolymers of ethylene, acrylic acids and salts of acrylic acids
Assignee: Dow Chemical Co
•
Filing: 1965-06-14
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Granted: 1968-04-23
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Spivey Ben Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:59
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08F10/00; C08F20/00; C08F20/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2956046A
Cited
US3271373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |