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US4089340A
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Viscosity modification of hydrocarbonaceous materials
Assignee: Otisca Industries Ltd
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Filing: 1976-03-01
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Granted: 1978-05-16
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Expires: 1996-03-01
Abstract
Abstract Methods of modifying the viscosity of hydrocarbonaceous materials in which a fluoro or chlorofluoro derivative of a lower alkane is mixed therewith, and processes involving and employing products so modified.
Inventors
- 👤 Clay D. Smith
- 👤 Douglas V. Keller, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:38
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/08; F17D1/16; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A method of transporting a hydrocarbonaceous material which comprises the steps of: first mixing a viscosity modifier which is a lower chlorofluoro or fluoro alkane having a freezing point not higher than 100° F or a mixture of such alkane derivatives with said material; then effecting a flow of the resulting mixure from the first to the second of two locations; and recovering the viscosity modifier from the mixture after the mixture has reached the second of said locations.
Claim 2
Independent Claim
79 words
A method of transporting a hydrocarbonaceous material which comprises the steps of: first mixing a viscosity modifier which is a lower chlorofluoro or fluoro alkane having a freezing point not higher than 100° F or a mixture of such alkane derivatives with said material; then effecting a flow of the resulting mixure from the first to the second of two locations; and recovering the viscosity modifier from the mixture after the mixture has reached the second of said locations.
Claim 3
Dependent Claim
14 words
A method according to claim 1, wherein said flow is effected at ambient temperature.
Claim 4
Dependent Claim
25 words
A method according to claim 1, wherein said mixture is physically confined as it flows from the first to the second of said two locations.
Claim 5
Dependent Claim
18 words
A method according to claim 1, wherein the viscosity modifier is or comprises a major proportion of trichlorofluoromethane.
Claim 6
Dependent Claim
46 words
A method according to claim 4, wherein the viscosity modifier is mixed with the hydrocarbonaceous material in an amount sufficient to maintain the viscosity of the mixture at not more than 100 centipoises as said mixture flows from the first to the second of said locations.
Claim 7
Dependent Claim
29 words
A method according to claim 4, in which the viscosity modifier also includes at least one of the following: dichlorodifluoromethane monochlorotrifluoromethane tetrafluoromethane monochlorodifluoromethane a trichlorotrifluoroethane a dichlorotetrafluoroethane a tetrachlorodifluoroethane.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |