US3170958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mono-and di-secondary aliphatic ethers
Assignee: Dow Chemical Co
•
Filing: 1961-05-08
•
Granted: 1965-02-23
•
Expires: 1981-05-08
Abstract
No abstract record available.
Inventors
- 👤 William L Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:14
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/18; C07C41/28; C07C2601/00; C07C2601/12; C07C2601/14
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |