Patent US2968940A successfully refreshed from Google Patents.
US2968940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for detecting dispersed water in hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-12-02
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Granted: 1961-01-24
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Expires: 1978-12-02
Abstract
No abstract record available.
Inventors
- 👤 Feldman Nicholas
- 👤 George P Gross
- 👤 Monnikendam Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:28
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD FOR DETECTING THE PRESENCE OF DISPERSED WATER IN HYDROCARBONS WHICH COMPRISES CONTACTING SAID HYDROCARBONS WITH A MINOR AMOUNT OF A MIXTURE OF A FINELY-DIVIDED ANHYDROUS SODIUM SALT OF A O-CREOLSULFONPHTHALEIN AND FINELY-DIVIDED ANHYDROUS BARIUM CARBONATE WHEREBY SAID MIXTURE UNDERGOES A CHANGE IN COLOR IN THE PRESENCE OF FREE WATER.
Claim 2
Independent Claim
51 words
A METHOD FOR DETECTING THE PRESENCE OF DISPERSED WATER IN HYDROCARBONS WHICH COMPRISES CONTACTING SAID HYDROCARBONS WITH A MINOR AMOUNT OF A MIXTURE OF A FINELY-DIVIDED ANHYDROUS SODIUM SALT OF A O-CREOLSULFONPHTHALEIN AND FINELY-DIVIDED ANHYDROUS BARIUM CARBONATE WHEREBY SAID MIXTURE UNDERGOES A CHANGE IN COLOR IN THE PRESENCE OF FREE WATER.
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) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |