US2785151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating tall-oil with urea, and particularly a new form of expanded urea
Assignee: Individual
•
Filing: 1952-10-14
•
Granted: 1957-03-12
•
Expires: 1972-10-14
Abstract
No abstract record available.
Inventors
- 👤 Manuel H Gorin
- 👤 Rosenstein Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:25
CPC Classifications
C; C11; C11C; C11C1/00; C11C1/007; C07; C07C; C07C51/00; C07C51/42; C07C51/487; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A PROCESS FOR RECOVERING STRAIGTH-CHAIN-FATTY ACID COMPONENTS OF MORE THAN TEN CARBON ATOMS FROM THEIR SOLUTION IN HYDROCARBON, THE STEP OF ADDING TO THE SAID SOLUTION AT A TEMPERATURE BELOW 75*C. EXPANDED UREA AS THE SOLE REAGENT TO FORM A SOLID ADDUCT OF THE SAID FATTY ACID AND UREA; SAID HYDROCARBON BEING ONE OF WHICH DOES NOT FORM SOLID ADDUCT WITH UREA, AND WHICH IS NOT A SOLVENT FOR UREA.
Claim 2
Dependent Claim
71 words
IN A PROCESS FOR RECOVERING STRAIGTH-CHAIN-FATTY ACID COMPONENTS OF MORE THAN TEN CARBON ATOMS FROM THEIR SOLUTION IN HYDROCARBON, THE STEP OF ADDING TO THE SAID SOLUTION AT A TEMPERATURE BELOW 75*C. EXPANDED UREA AS THE SOLE REAGENT TO FORM A SOLID ADDUCT OF THE SAID FATTY ACID AND UREA; SAID HYDROCARBON BEING ONE OF WHICH DOES NOT FORM SOLID ADDUCT WITH UREA, AND WHICH IS NOT A SOLVENT FOR UREA.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |