Patent US3348792A successfully refreshed from Google Patents.
Patent US2070848A successfully refreshed from Google Patents.
US2070848A
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Method for preparing aliphatic-aromatic ethers
Assignee: Goodrich Corp
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Filing: 1934-12-12
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Granted: 1937-02-16
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Expires: 1954-12-12
Abstract
No abstract record available.
Inventors
- 👤 Waldo L Semon
- 👤 Robert V Yohe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:14
CPC Classifications
C; C07; C07C; C07C211/00; C07C211/43; C07C211/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-02-16 | 1940-08-17 | 1941-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-16 | 1944-08-17 | 1945-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-16 | 1948-08-17 | 1949-02-16 | $7700.00 | Window Closed / Lapsed |