Patent US4312901A successfully refreshed from Google Patents.
US4312901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil based side release agents for coal cars
Assignee: ChampionX LLC
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Filing: 1980-04-28
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Granted: 1982-01-26
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Expires: 2000-04-28
Abstract
Abstract A method for reducing the tendency of coal to freeze and thus adhere to the sides of metal storage and shipping containers used to store and/or transport said coal at temperatures below the freezing point of water which comprises applying to the sides of the container a coating composition comprising: a. 55-97% by weight of a hydrocarbon liquid; b. 3-45% by weight of a hydrocarbon oil-soluble surfactant having an HLB value of 1-8.
Inventors
- 👤 George T. Kekish
- 👤 Roger W. Kugel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:50
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A method for reducing the tendency of coal to freeze and thus adhere to the sides of metal storage and shipping containers used to store and/or transport said coal at temperatures below the freezing point of water which comprises spraying on the sides of the interior container a coating composition comprising: a. 55-97% by weight of a fuel oil; b. 3-45% by weight of a hydrocarbon oil-soluble surfactant having an HLB value of 1-8.
Claim 2
Independent Claim
74 words
A method for reducing the tendency of coal to freeze and thus adhere to the sides of metal storage and shipping containers used to store and/or transport said coal at temperatures below the freezing point of water which comprises spraying on the sides of the interior container a coating composition comprising: a. 55-97% by weight of a fuel oil; b. 3-45% by weight of a hydrocarbon oil-soluble surfactant having an HLB value of 1-8.
Claim 3
Dependent Claim
32 words
The method of claim 1 wherein the composition comprises: a. 70-90% by weight of a fuel oil; b. 10-30% by weight of a hydrocarbon oil-soluble surfactant having an HLB value of 1-8.
Claim 4
Independent Claim
49 words
A method for rendering the sides of metal shipping containers hydrophobic which comprises spraying onto the interior sides of said metal shipping containers a solution comprising: a. 55-97% by weight of a fuel oil; b. 3-45% by weight of a hydrocarbon oil-soluble surfactant having an HLB value of 1-8.
Claim 5
Independent Claim
49 words
A method for rendering the sides of metal shipping containers hydrophobic which comprises spraying onto the interior sides of said metal shipping containers a solution comprising: a. 55-97% by weight of a fuel oil; b. 3-45% by weight of a hydrocarbon oil-soluble surfactant having an HLB value of 1-8.
Claim 6
Independent Claim
53 words
A method for preventing the adherence of ice to the interior sides of metal storage containers which comprises spraying the interior sides of said metal containers with a composition comprising: a. 55-97% by weight of a fuel oil; b. 3-45% by weight of a hydrocarbon oil-soluble surfactant having an HLB value of 1-8.
Claim 7
Independent Claim
53 words
A method for preventing the adherence of ice to the interior sides of metal storage containers which comprises spraying the interior sides of said metal containers with a composition comprising: a. 55-97% by weight of a fuel oil; b. 3-45% by weight of a hydrocarbon oil-soluble surfactant having an HLB value of 1-8.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |