US3413242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-oxygen-silicon polymers and method of preparation
Assignee: Dow Chemical Co
•
Filing: 1967-07-24
•
Granted: 1968-11-26
•
Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Charles B Roberts
- 👤 Darell D Toner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:47
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/10; C08G77/00; C08G77/48; C08G77/58
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |