Patent US2733218A successfully refreshed from Google Patents.
US2733218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing water from liquid
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:52
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04; C10G29/00; C10G29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD FOR REMOVING WATER FROM A WATER-CONTAINING LIQUID ORGANIC COMPOSITION WHICH COMPRISES CONTACTING THE WATER IN SAID COMPOSITION WITH UREA AT AN ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 150* TO 212* F. TO THEREBY EFFECT A REACTION BETWEEN THE UREA AND THE WATER, AT LEAST ABOUT ONE MOLE OF UREA BEING EMPLOYED PER MOLE OF WATER ORIGINALLY CONTAINED IN SAID LIQUID ORGANIC COMPOSITION.
Claim 2
Independent Claim
65 words
A METHOD FOR REMOVING WATER FROM A WATER-CONTAINING LIQUID ORGANIC COMPOSITION WHICH COMPRISES CONTACTING THE WATER IN SAID COMPOSITION WITH UREA AT AN ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 150* TO 212* F. TO THEREBY EFFECT A REACTION BETWEEN THE UREA AND THE WATER, AT LEAST ABOUT ONE MOLE OF UREA BEING EMPLOYED PER MOLE OF WATER ORIGINALLY CONTAINED IN SAID LIQUID ORGANIC COMPOSITION.
References Cited (Backward Citations)
US2676167A
Cited
US2427326A
Cited
US2568740A
Cited
US2568742A
Cited
US2568745A
Cited
US2666020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |