Patent US2925375A successfully refreshed from Google Patents.
US2925375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon refining and conversion process including removal of organic nitrogen compounds with azeolite
Assignee: Union Oil Company of California
•
Filing: 1956-11-26
•
Granted: 1960-02-16
•
Expires: 1976-11-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fleck
- 👤 Carlyle G Wight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:00
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06; C10G25/00; C10G25/02; C10G25/03; C10G25/05; C10G67/00; C10G67/02; C10G67/06; C10G69/00; C10G69/02; C10G69/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A PROCESS WHEREIN A NORMALLY LIQUID HYROCARBON MIXTURE WHICH IS CONTAMINATED WITH NORMALLY INCIDENT ORGANIC SULFUR AND ORGANIC NITROGEN COMPOUNDS OF SUBSTANTIALLY THE SAME BOILING RANGE IS (1) SUBJECTED TO A CATALYTIC DESULFURIZATION TREATMENT IN A DESULFURIZATION ZONE TO PRODUCE A HYDROCARBON EFFLUENT WHICH IS SUBSTANTIALLY FREE OF ORGANIC SULFUR COMPOUNDS BUT CONTAINS SMALL AMOUNT OF ORGANIC NITROGEN COMPOUNDS, AND (2) SAID EFFLUENT IS SUBJECTED TO A CATALYTIC CONVERSION TREATMENT IN A CONVERSION ZONE TO PRODUCE A PROCESS PRODUCT OF IMPROVED QUALITIES, SAID CATALYTIC CONVERSION TREATMENT BEING ONE WHICH IS ADVERSELY AFFECTED BY THE PRESENCE OF SAID SMALL AMOUNT OF ORGANIC NITROGEN COMPOUNDS, THE IMPROVEMENT WHICH CONSISTS IN CONTACTING SAID EFFLUENT IN THE VAPOR PHASE A PARTIALLY DEHYDRATED ZEOLITIC METALLO ALUMINO SILICATE HAVING PORES OF SUBSTANTIALLY UNIFORM DIAMETER GREATER THAN 7 A. IN AN ADSORPTION ZONE PRIOR
Claim 2
Dependent Claim
138 words
IN A PROCESS WHEREIN A NORMALLY LIQUID HYROCARBON MIXTURE WHICH IS CONTAMINATED WITH NORMALLY INCIDENT ORGANIC SULFUR AND ORGANIC NITROGEN COMPOUNDS OF SUBSTANTIALLY THE SAME BOILING RANGE IS (1) SUBJECTED TO A CATALYTIC DESULFURIZATION TREATMENT IN A DESULFURIZATION ZONE TO PRODUCE A HYDROCARBON EFFLUENT WHICH IS SUBSTANTIALLY FREE OF ORGANIC SULFUR COMPOUNDS BUT CONTAINS SMALL AMOUNT OF ORGANIC NITROGEN COMPOUNDS, AND (2) SAID EFFLUENT IS SUBJECTED TO A CATALYTIC CONVERSION TREATMENT IN A CONVERSION ZONE TO PRODUCE A PROCESS PRODUCT OF IMPROVED QUALITIES, SAID CATALYTIC CONVERSION TREATMENT BEING ONE WHICH IS ADVERSELY AFFECTED BY THE PRESENCE OF SAID SMALL AMOUNT OF ORGANIC NITROGEN COMPOUNDS, THE IMPROVEMENT WHICH CONSISTS IN CONTACTING SAID EFFLUENT IN THE VAPOR PHASE A PARTIALLY DEHYDRATED ZEOLITIC METALLO ALUMINO SILICATE HAVING PORES OF SUBSTANTIALLY UNIFORM DIAMETER GREATER THAN 7 A. IN AN ADSORPTION ZONE PRIOR
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) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |