US3637512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon solvent composition
Assignee: Vista Chemical Co
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Filing: 1968-07-22
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Granted: 1972-01-25
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Expires: 1988-07-22
Abstract
Abstract WHERE R and R'' are selected from H and acrylic hydrocarbon radicals, M is an alkaline earth or an alkali metal, and the total number of carbon atoms in said foaming agent is at least 18. A hydrocarbon solvent composition having improved foaming characteristics is provided wherein the hydrocarbon solvent composition consists of a petroleum-derived light hydrocarbon fraction and a foaming agent having the general formula
Inventors
- 👤 Ted P Matson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:43
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0094; C11D1/00; C11D1/02; C11D1/12; C11D3/43; D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
43 words
The composition of claim 1 wherein said light hydrocarbon fraction is selected from the group consisting of kerosene, naphtha, Stoddard solvent, benzene and toluene, and said total number of carbon atoms in said foaming agent is in the range of 18 to 24.
Claim 2
Dependent Claim
21 words
The composition of claim 2 wherein said foaminG agent is present in an amount from about 0.1 to 1 weight percent.
Claim 3
Dependent Claim
24 words
The composition of claim 3 wherein said M is an alkali metal component and is selected from the group consisting of sodium and potassium,
Claim 4
Dependent Claim
10 words
The composition of claim 3 wherein said M is calcium.
References Cited (Backward Citations)
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Cited
US3222286A
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US3234258A
Cited
US3409637A
Cited
US3346629A
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US3376336A
Cited
US3285858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |