US3428567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizer for polyols
Assignee: Dow Chemical Co
•
Filing: 1965-11-03
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Granted: 1969-02-18
•
Expires: 1985-11-03
Abstract
No abstract record available.
Inventors
- 👤 Robert A Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:32
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/30; C07; C07C; C07C17/00; C07C17/38; C07C17/42; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3214397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |