Patent US1186378A successfully refreshed from Google Patents.
US4225317A
Expired / Lapsed
US
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Alkyl phenoxy poly(ethyleneoxy)ethanol in fuel oil to prevent coal particles from freezing together
Assignee: ChampionX LLC
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Filing: 1979-03-08
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Granted: 1980-09-30
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Expires: 1999-03-08
Abstract
Abstract A method for treating particulate solids having surface moisture to reduce the cohesive strength of masses of such solids when frozen, said particulate solids being neither water soluble nor water swellable, said method consisting of spraying such solids with an effective amount of a hydrocarbon liquid solution of a nonionic surfactant having an HLB between 9.5 and 11.0.
Inventors
- 👤 Roger W. Kugel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:31
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A method for treating coal particles having surface moisture to reduce the cohesive strength of such coal particles when frozen which comprises spraying the coal particles prior of freezing with an effective amount of a hydrocarbon liquid solution of a nonionic surfactant having a HLB between 9.5 and 11.0.
Claim 2
Independent Claim
49 words
A method for treating coal particles having surface moisture to reduce the cohesive strength of such coal particles when frozen which comprises spraying the coal particles prior of freezing with an effective amount of a hydrocarbon liquid solution of a nonionic surfactant having a HLB between 9.5 and 11.0.
Claim 3
Dependent Claim
21 words
The method of claim 1 where the hydrocarbon oil surfactant solution contains between 0.5-10% by weight of water as a cosolvent.
Claim 4
Dependent Claim
19 words
The method of claim 1 where the nonionic surfactant is dinonyl phenol reacted with 8.8 moles of ethylene oxide.
References Cited (Backward Citations)
US2116682A
Cited
US2373727A
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US2436146A
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US2716068A
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US3298804A
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US3624243A
Cited
US3794472A
Cited
US4117214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |