Patent US2549290A successfully refreshed from Google Patents.
US2549290A
Expired / Lapsed
US
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Purification of crude synthetic methanol
Assignee: Honeywell International Inc
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Filing: 1948-08-17
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Granted: 1951-04-17
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Expires: 1968-08-17
Abstract
No abstract record available.
Inventors
- 👤 William J Congdon
- 👤 Richard C Datin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:53
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/041; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/04; C10M2207/042; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/14; C10M2207/142; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/003; C10M2223/02; C10M2223/023; C10M2223/04; C10M2223/0405; C10M2223/041; C10M2223/042; C10M2223/049; C10M2223/0495; C10M2223/06; C10M2223/0603; C10M2223/08; C10M2223/083; C10M2223/10; C10M2223/103; C10N; C10N2040/00; C10N2040/08; Y; Y10; Y10S; Y10S203/00; Y10S203/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR PURIFYING CRUDE METHANOL OBTAINED FROM METHANOL CATALYTIC SYNTHESIS CONTAINING SMALL AMOUNTS OF LIQUID UNSATURATED AND SATURATED HYDROCARBONS AS BY-PRODUCT OILY IMPURITIES WHICH COMPRISES DILUTING THE CRUDE METHANOL WITH WATER TO FORM A METHANOL-WATER MIXTURE, INTRODUCING THE MIXTURE INTO A STRIPPING ZONE WHEREIN VAPORS OF METHANOL, WATER AND OILY MATERIAL ARE EVOLVED, COOLING AND CONDENSING SAID VAPORS, DILUTING THE CONDENSATE WITH WATER TO EFFECT ITS SEPARATION INTO AN OILY LAYER AND AN AQUEOUS METHANOL LAYER, SEPARATING THE OIL LAYER. RETURNING THE AQUEOUS METHANOL LAYER TO THE STRIPPING ZONE, AND WITHDRAWING FROM THE STRIPPING ZONE AND AQUEOUS METHANOL SOLUTION SUBSTANTIALLY FREE FROM OILY MATERIAL.
Claim 2
Dependent Claim
105 words
A PROCESS FOR PURIFYING CRUDE METHANOL OBTAINED FROM METHANOL CATALYTIC SYNTHESIS CONTAINING SMALL AMOUNTS OF LIQUID UNSATURATED AND SATURATED HYDROCARBONS AS BY-PRODUCT OILY IMPURITIES WHICH COMPRISES DILUTING THE CRUDE METHANOL WITH WATER TO FORM A METHANOL-WATER MIXTURE, INTRODUCING THE MIXTURE INTO A STRIPPING ZONE WHEREIN VAPORS OF METHANOL, WATER AND OILY MATERIAL ARE EVOLVED, COOLING AND CONDENSING SAID VAPORS, DILUTING THE CONDENSATE WITH WATER TO EFFECT ITS SEPARATION INTO AN OILY LAYER AND AN AQUEOUS METHANOL LAYER, SEPARATING THE OIL LAYER. RETURNING THE AQUEOUS METHANOL LAYER TO THE STRIPPING ZONE, AND WITHDRAWING FROM THE STRIPPING ZONE AND AQUEOUS METHANOL SOLUTION SUBSTANTIALLY FREE FROM OILY MATERIAL.
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) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |