US3087888A
Expired / Lapsed
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Determination of vanadium content of hydrocarbon oils by electron paramagnetic resonance spectrometry
Assignee: Gulf Research and Development Co
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Filing: 1960-06-15
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Granted: 1963-04-30
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Expires: 1980-06-15
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Saraceno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:39
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/10; G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2835; G01R; G01R33/00; G01R33/20; G01R33/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A METHOD FOR CONTROLLING A PETROLEUM REFINING PROCESS IN RESPONSE TO CHANGES IN THE VANADIUM CONTENT OF AN OIL STREAM OF SAID PROCESS, COMPRISING SAMPLING AT INTERVALS A HYDROCARBON OIL STREAM OF SAID PROCESS THAT HAS A VISCOSITY AT THE TEMPERATURE AT WHICH IT IS TO BE SUBJECTED TO ELECTRON PARAMAGNETIC RESONANCE SPECTROMETRY SUFFICIENT THAT THE MINIMUM VANADIUM CONTENT TO BE DETERMINED WILL PROVIDE A DETECTABLE ELECTRICAL OUTPUT, SUBJECTING EACH OIL SAMPLE TO BE TESTED TO ELECTRON PARAMAGNETIC RESONANCE SPECTROMETRY TO OBTAIN AN ELECTRICAL OUTPUT WHOSE INTENSITY IS RELATED TO THE AMOUNT OF PARAMAGNETIC VANADIUM IN THE SAMPLE, AND CONTROLLING A PORTION OF SAID REFINERY PROCESS IN RESPONSE TO SAID OUTPUT SO AS TO MAINTAIN THE VANADIUM CONTENT IN A SELECTED ZONE OF SAID REFINING PROCESS WITHIN A PREDETERMINED RANGE.
Claim 2
Independent Claim
130 words
A METHOD FOR CONTROLLING A PETROLEUM REFINING PROCESS IN RESPONSE TO CHANGES IN THE VANADIUM CONTENT OF AN OIL STREAM OF SAID PROCESS, COMPRISING SAMPLING AT INTERVALS A HYDROCARBON OIL STREAM OF SAID PROCESS THAT HAS A VISCOSITY AT THE TEMPERATURE AT WHICH IT IS TO BE SUBJECTED TO ELECTRON PARAMAGNETIC RESONANCE SPECTROMETRY SUFFICIENT THAT THE MINIMUM VANADIUM CONTENT TO BE DETERMINED WILL PROVIDE A DETECTABLE ELECTRICAL OUTPUT, SUBJECTING EACH OIL SAMPLE TO BE TESTED TO ELECTRON PARAMAGNETIC RESONANCE SPECTROMETRY TO OBTAIN AN ELECTRICAL OUTPUT WHOSE INTENSITY IS RELATED TO THE AMOUNT OF PARAMAGNETIC VANADIUM IN THE SAMPLE, AND CONTROLLING A PORTION OF SAID REFINERY PROCESS IN RESPONSE TO SAID OUTPUT SO AS TO MAINTAIN THE VANADIUM CONTENT IN A SELECTED ZONE OF SAID REFINING PROCESS WITHIN A PREDETERMINED RANGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |