Patent US2909482A successfully refreshed from Google Patents.
US2909482A
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Determination of asphaltic components of petroleum
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-11-14
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Granted: 1959-10-20
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Expires: 1977-11-14
Abstract
No abstract record available.
Inventors
- 👤 Rollie B Williams
- 👤 Rhoderick K Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:26
CPC Classifications
G; G01; G01N; G01N24/00; G01N24/10; Y; Y10; Y10S; Y10S208/00; Y10S208/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A METHOD FOR DETERMINING THE ASPHALTENES CONTENT OF AN ASPHALTIC PETROLEUM HYDROCARBON SAMPLE WHICH COMPRISES MEASURING THE ELECTRON PARAMAGNETIC RESONANCE ABSORPTIVITY OF SAID SAMPLE TO THEREBY OBTAIN A MEASUREMENT OF THE ASPHALTENES CONTENT OF SAID SAMPLE.
Claim 2
Independent Claim
36 words
A METHOD FOR DETERMINING THE ASPHALTENES CONTENT OF AN ASPHALTIC PETROLEUM HYDROCARBON SAMPLE WHICH COMPRISES MEASURING THE ELECTRON PARAMAGNETIC RESONANCE ABSORPTIVITY OF SAID SAMPLE TO THEREBY OBTAIN A MEASUREMENT OF THE ASPHALTENES CONTENT OF SAID SAMPLE.
References Cited (Backward Citations)
US2692820A
Cited
US2765330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |