US3644433A
Expired / Lapsed
US
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Increasing autoignition temperature of cs2
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-03-20
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Granted: 1972-02-22
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Expires: 1990-03-20
Abstract
Abstract A COMPOSITION OF MATTER SUITABLE FOR CLEANING OIL AND GAS WELLS AND FOR SULFIDING A HYDROTREATING CATALYST WHICH COMPRISES CARBON DISULFIDE CONTAINING 5-40 LV. PERCENT, PREFERABLY 10-30,, OF A REFINERY STREAM BOILING BELOW 250*F., CHOSEN FROM THE GROUP CONSISTING OF CATALYTICALLY CRACKED NAPHTHA AND COKER NAPHTHA.
Inventors
- 👤 John A Bichard
- 👤 Jackson Eng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:18
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; B; B01; B01J; B01J37/00; B01J37/20; C01; C01B; C01B32/00; C01B32/70; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/931; Y10S507/932
Claims Analysis
Total Claims: 0
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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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |