US3444151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Styrene-maleic anhydride-amine polymers as emulsifiers in polymerization of vinyl monomers
Assignee: Sinclair Research Inc
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Filing: 1965-09-07
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Granted: 1969-05-13
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Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Verdol
- 👤 Hector J Gonzalez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:17
CPC Classifications
C; C08; C08F; C08F257/00; C08F257/02; Y; Y10; Y10S; Y10S526/00; Y10S526/915
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |