US2838576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary alcohols
Assignee: —
•
Filing: —
•
Granted: 1958-06-10
•
Expires: 1975-06-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:24
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/36; C07C29/38; C07C29/40; C07C31/00; C07C31/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR THE PREPARATION OF DIETHYLENIC ALCOHOLS WHICH COMPRISES REACTING MAGNESIUM WITH A SOLUTION IN TETRAHYDROFURAN OF AN ETHYLENIC COMPOUND OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
25 words
A PROCESS FOR THE PREPARATION OF DIETHYLENIC ALCOHOLS WHICH COMPRISES REACTING MAGNESIUM WITH A SOLUTION IN TETRAHYDROFURAN OF AN ETHYLENIC COMPOUND OF THE GENERAL FORMULA:
References Cited (Backward Citations)
DE544388C
Cited
US2589275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |