This is a divisional of copending application(s) Ser. No. 07/502,504 filed on Mar. 30, 1990 and now U.S. Pat. No. 4,992,162.
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2614971 | Burton | Oct 1952 | |
2730558 | Gerhold | Jan 1956 | |
2777800 | Mitchell et al. | Jan 1957 | |
2801957 | Ray | Aug 1957 | |
2850431 | Smith | Sep 1958 | |
2940920 | Garwin | Jun 1960 | |
3117079 | Harper | Jan 1964 | |
3723256 | Thompson | Mar 1973 | |
3816496 | Schnabel | Jun 1974 | |
4522710 | Achia et al. | Jun 1985 | |
4702819 | Sharma et al. | Oct 1987 | |
4722769 | Chan et al. | Feb 1988 |
Entry |
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Nelson, W. L. "The Refiner's Notebook: Solvent Manufacture", The Oil and Gas Journal, Mar. 10, 1945, p. 83. |
Kobe K. A. and J. J. McKetta, Jr., Advances in Petroleum Chemistry and Refining, vol. 5, p. 284. Interscience Publishers: 1962. |
Sinkar, S. R., "Design, uses of modern SDA process", The Oil and Gas Journal, Sep. 30, 1974, pp. 56-64. |
Number | Date | Country | |
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Parent | 502504 | Mar 1990 |