Patent EP0324523A2 successfully refreshed from Google Patents.
Patent US2909483A successfully refreshed from Google Patents.
US2909483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Determination of asphaltic components of petroleum hydrocarbons by measuring the electrical conductivity thereof
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-11-14
•
Granted: 1959-10-20
•
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
2026-11-08 12:47
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2835; G01N27/00; G01N27/02; G01N27/04; G01N27/06; Y; Y10; Y10S; Y10S208/00; Y10S208/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A METHOD FOR DETERMINING THE ASPHALTENES CONTENT OF AN ASPHALTIC HYDROCARBON SAMPLE WHICH COMPRISES DISSOLVING SAID SAMPLE IN AN AMOUNT OF SOLVENT SUFFICIENT TO PROVIDE A FREE-FLOWING SOLUTION AND THEN MEASURING THE
Claim 2
Independent Claim
32 words
A METHOD FOR DETERMINING THE ASPHALTENES CONTENT OF AN ASPHALTIC HYDROCARBON SAMPLE WHICH COMPRISES DISSOLVING SAID SAMPLE IN AN AMOUNT OF SOLVENT SUFFICIENT TO PROVIDE A FREE-FLOWING SOLUTION AND THEN MEASURING THE
References Cited (Backward Citations)
US2211704A
Cited
US2737469A
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 |