Number | Date | Country | Kind |
---|---|---|---|
97 05965 | May 1997 | FRX |
Number | Date | Country |
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2014385 | Apr 1970 | FRX |
Entry |
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Alan M. Phipps, "Anion Exchange in Dimethyl Sulfoxide", Analytical Chemistry 40(12):1769-1773 (1968). |
Chaudron et al., "La Purification du Dimethylsulfoxyde: criteres de purete", Chimie Analytique 53(5):310-314 (1971) (copy to be provided). |
Copy of French Search Report dated Jan. 28, 1998. |