US3720600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cracking of hydrocarbons
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1971-03-01
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Granted: 1973-03-13
•
Expires: 1991-03-01
Abstract
Abstract A HYDROCARBON FEEDSTOCK, FOR EXAMPLE, NAPHTHA, IS CRACKED IN THE PRESENCE OF STEAM WHICH HAS BEEN PRODUCED IN THE PRESENCE OF AN ALKANOLAMINE, PREFERABLY ETHANOLAMINE. THE PROCESS REDUCES CORROSION IN THE STEAM-RAISING EQUIPMENT. D R A W I N G
Inventors
- 👤 G Mansfield
- 👤 M Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:57
CPC Classifications
C; C10; C10G; C10G9/00; C10G2400/00; C10G2400/20; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/95
Claims Analysis
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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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |