US2694736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aryl ethers
Assignee: —
•
Filing: —
•
Granted: 1954-11-16
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Expires: 1971-11-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:30
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/23; C07C41/00; C07C41/01; C07C41/05; C07C41/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A PROCESS FOR THE PRODUCTION OF 4-(O-CRESOXY)BUTANDEDIOL(1,2) WHICH CONSISTS IN REACTING AN EXCESS OF O-CRESOL WITH BUTINE(2)-DIOL(1,4) IN THE PRESENCE OF MERCURIC SULFATE AT TEMPERATURES UP TO 50* C., SEPARATING THE MERCURY, NEUTRALIZING, AND THEN HYDROGENATING THE 4-(O-CRESOXY)-BUTANOL(1)-ONE(2) FORMED IN THE PRESENCE OF RANEY-NICKEL WITH HYDROGEN OF A PRESSURE OF ABOUT 200 ATMOSPHERES AT TEMPERATURES UP TO 120* C.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |