US2774752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating hydrocarbons with thiourea
Assignee: —
•
Filing: —
•
Granted: 1956-12-18
•
Expires: 1973-12-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:30
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR FORMING AN ADDUCT WITH EXPANDED THIOUREA CHARACTERIZED BY A BULK DENSITY OF SUBSTANTIALLY 0.45 GRAM PER CC. AND ALSO CHARACTERIZED BY REACTIVITY WHICH ENABLES COMPLETE ADDUCT FORMATION WHEN SAID THIOUREA IS USED AS THE SOLE REAGENT WITH LIQUID CYCLOHEXANE IN A CONTACT PERIOD AT ROOM TEMPERATURE NOT EXCEEDING ONE HOUR, COMPRISING PASSING A GAS STREAM, CONTAINING AT LEAST ONE HYDROCARBON CAPABLE OF FORMING AN ADDUCT WITH THIOUREA, OVER A MASS OF SAID EXPANDED THIOUREA AS THE SOLE REAGENT AT A TEMPERATURE BELOW APPROXIMATELY 60* C. AND FOR A CONTACT TIME OF LESS THAN ONE HOUR TO FORM AN ADDUCT OF THIOUREA AND SAID HYDROCARBON.
Claim 2
Dependent Claim
107 words
A PROCESS FOR FORMING AN ADDUCT WITH EXPANDED THIOUREA CHARACTERIZED BY A BULK DENSITY OF SUBSTANTIALLY 0.45 GRAM PER CC. AND ALSO CHARACTERIZED BY REACTIVITY WHICH ENABLES COMPLETE ADDUCT FORMATION WHEN SAID THIOUREA IS USED AS THE SOLE REAGENT WITH LIQUID CYCLOHEXANE IN A CONTACT PERIOD AT ROOM TEMPERATURE NOT EXCEEDING ONE HOUR, COMPRISING PASSING A GAS STREAM, CONTAINING AT LEAST ONE HYDROCARBON CAPABLE OF FORMING AN ADDUCT WITH THIOUREA, OVER A MASS OF SAID EXPANDED THIOUREA AS THE SOLE REAGENT AT A TEMPERATURE BELOW APPROXIMATELY 60* C. AND FOR A CONTACT TIME OF LESS THAN ONE HOUR TO FORM AN ADDUCT OF THIOUREA AND SAID HYDROCARBON.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |