US2560931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration of acetonitrile
Assignee: ExxonMobil Oil Corp
•
Filing: 1946-02-26
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Granted: 1951-07-17
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Expires: 1966-02-26
Abstract
No abstract record available.
Inventors
- 👤 Harold D Chapman
- 👤 Willian I Denton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:52
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF PRODUCING SUBSTANTIALLY ANHYDROUS ACETONITRILE FROM WATER-CONTAMINATED ACETONITRILE, WHICH COMPRISES CONTACTING WATERCONTAMINATED ACETONITRILE WITH ACTIVATED ALUMINA, AT A TEMPERATURE FALLING WITHIN THE RA GE VARYING BETWEEN ABOUT 35* AND LESS THAN ABOUT 200* F., AND UNDER SUFFICIENT PRESSURE TO MAINTAIN THE WATER-CONTAMINATED ACETONITRILE IN THE LIQUID PHASE.
Claim 2
Independent Claim
49 words
THE METHOD OF PRODUCING SUBSTANTIALLY ANHYDROUS ACETONITRILE FROM WATER-CONTAMINATED ACETONITRILE, WHICH COMPRISES CONTACTING WATERCONTAMINATED ACETONITRILE WITH ACTIVATED ALUMINA, AT A TEMPERATURE FALLING WITHIN THE RA GE VARYING BETWEEN ABOUT 35* AND LESS THAN ABOUT 200* F., AND UNDER SUFFICIENT PRESSURE TO MAINTAIN THE WATER-CONTAMINATED ACETONITRILE IN THE LIQUID PHASE.
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) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |