US3384573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control and characterization of catalytic cracking processes
Assignee: Mobil Oil AS
•
Filing: 1966-01-14
•
Granted: 1968-05-21
•
Expires: 1986-01-14
Abstract
No abstract record available.
Inventors
- 👤 Robert L Gorring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:17
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/10; G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/33; G01R; G01R33/00; G01R33/20; G01R33/44; G05; G05D; G05D11/00; Y; Y10; Y10S; Y10S208/00; Y10S208/01; Y10T; Y10T436/00; Y10T436/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD FOR CHARACTERIZING THE COKING TENDENCIES OF A HYDROCARBON MATERIAL EMPLOYED IN A CATALYTIC CRACKING OPERATION WHICH COMPRISES SUBJECTING A HYDROCARBON MATERIAL TO ULTRAVIOLET SPECTROPHOTOMETRIC ANALYSIS BY PASSING LIGHT HAVING A WAVE LENGTH IN THE RANGE OF FROM ABOUT 2800A. TO ABOUT 3200A. SO AS TO GENERATE A SIGNAL REPRESENTATIVE OF THE LIGHT ABSORBING CHARACTERISTICS AND THUS THE COKING TENDENCIES OF THE HYDROCARBON MATERIAL AND EMPLOYING THE SIGNAL THUS GENERATED TO CONTROL AT LEAST ONE OF (A) HYDROCARBON FEED RATE TO THE PROCESS, (B) COMBUSTION AIR RATE TO THE REGENERATOR AND, (C) CATALYST CIRCULATION RATE IN THE PROCESS.
Claim 2
Independent Claim
99 words
A METHOD FOR CHARACTERIZING THE COKING TENDENCIES OF A HYDROCARBON MATERIAL EMPLOYED IN A CATALYTIC CRACKING OPERATION WHICH COMPRISES SUBJECTING A HYDROCARBON MATERIAL TO ULTRAVIOLET SPECTROPHOTOMETRIC ANALYSIS BY PASSING LIGHT HAVING A WAVE LENGTH IN THE RANGE OF FROM ABOUT 2800A. TO ABOUT 3200A. SO AS TO GENERATE A SIGNAL REPRESENTATIVE OF THE LIGHT ABSORBING CHARACTERISTICS AND THUS THE COKING TENDENCIES OF THE HYDROCARBON MATERIAL AND EMPLOYING THE SIGNAL THUS GENERATED TO CONTROL AT LEAST ONE OF (A) HYDROCARBON FEED RATE TO THE PROCESS, (B) COMBUSTION AIR RATE TO THE REGENERATOR AND, (C) CATALYST CIRCULATION RATE IN THE PROCESS.
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |