US3015369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of nitrogen oxides from combustion gases
Assignee: ExxonMobil Oil Corp
•
Filing: 1960-05-23
•
Granted: 1962-01-02
•
Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 James A Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:35
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/32; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9404; B01D53/9409; B01D53/9413; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01D2255/00; B01D2255/20; B01D2255/202; B01D2255/204; B01D2255/209; B01D2255/2092; B01D2255/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR REDUCING THE CONTENT OF OXIDE OF NITROGEN IN A COMBUSTION GAS CONTAINING THE SAME WHICH COMPRISES BRINGING SAID GAS INTO CONTACT AT A TEMPERATURE BETWEEN ABOUT 400*C. AND ABOUT 600*C. WITH A MATERIAL SELECTED FROM CRYSTALLINE ALKALI METAL AND ALKALINE EARTH METAL ALUMINOSILICATES HAVING RIGID THREE-DIMENSIONAL NETWORKS MADE UP OF UNIT CELLS CHARACTERIZED BY THE SUBSTANTIAL ABSENCE OF CHANGE IN UNIT CELL DIMENSIONS UPON DEHYDRATION ANDREHYDRATION AND PORES OFUNIFORM DIMENSIOM DISTRIBUTED THROUGHOUT THE CRYSTALLINE STRUCTURE, WHICH MATERIAL HAS BEEN SUBJECTED TO THERMAL PRETREATMENT IN AN INERT ATMOSPHERE PRIOR TO SAID CONTACT AT A TEMPERATURE WITHIN THE APPROXIMATE RANGE OF 400 TO 550* C. FOR A PERIOD OF BETWEEN ABOUT 1 AND ABOUT 10 HOURS.
Claim 2
Dependent Claim
117 words
A PROCESS FOR REDUCING THE CONTENT OF OXIDE OF NITROGEN IN A COMBUSTION GAS CONTAINING THE SAME WHICH COMPRISES BRINGING SAID GAS INTO CONTACT AT A TEMPERATURE BETWEEN ABOUT 400*C. AND ABOUT 600*C. WITH A MATERIAL SELECTED FROM CRYSTALLINE ALKALI METAL AND ALKALINE EARTH METAL ALUMINOSILICATES HAVING RIGID THREE-DIMENSIONAL NETWORKS MADE UP OF UNIT CELLS CHARACTERIZED BY THE SUBSTANTIAL ABSENCE OF CHANGE IN UNIT CELL DIMENSIONS UPON DEHYDRATION ANDREHYDRATION AND PORES OFUNIFORM DIMENSIOM DISTRIBUTED THROUGHOUT THE CRYSTALLINE STRUCTURE, WHICH MATERIAL HAS BEEN SUBJECTED TO THERMAL PRETREATMENT IN AN INERT ATMOSPHERE PRIOR TO SAID CONTACT AT A TEMPERATURE WITHIN THE APPROXIMATE RANGE OF 400 TO 550* C. FOR A PERIOD OF BETWEEN ABOUT 1 AND ABOUT 10 HOURS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |